ESP32 & ESPHome Voice Assistant

esp32-voice.yaml

esphome:
  name: esp32-mic-speaker
  friendly_name: esp32-mic-speaker
  on_boot:
     - priority: -100
       then:
         - wait_until: api.connected
         - delay: 1s
         - if:
             condition:
               switch.is_on: use_wake_word
             then:
               - voice_assistant.start_continuous:

esp32:
  board: esp32dev
  framework:
    type: esp-idf
    version: recommended

# Enable logging
logger:

# Enable Home Assistant API
api:

ota:

wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password

  # Enable fallback hotspot (captive portal) in case wifi connection fails
  ap:
    ssid: "Esp32-Mic-Speaker"
    password: "9vYvAFzzPjuc"

i2s_audio:
  i2s_lrclk_pin: GPIO27
  i2s_bclk_pin: GPIO26

microphone:
  - platform: i2s_audio
    id: mic
    adc_type: external
    i2s_din_pin: GPIO13
    pdm: false

speaker:
  - platform: i2s_audio
    id: big_speaker
    dac_type: external
    i2s_dout_pin: GPIO25
    mode: mono

voice_assistant:
  microphone: mic
  use_wake_word: false
  noise_suppression_level: 2
  auto_gain: 31dBFS
  volume_multiplier: 2.0
  speaker: big_speaker
  id: assist

switch:
  - platform: template
    name: Use wake word
    id: use_wake_word
    optimistic: true
    restore_mode: RESTORE_DEFAULT_ON
    entity_category: config
    on_turn_on:
      - lambda: id(assist).set_use_wake_word(true);
      - if:
          condition:
            not:
              - voice_assistant.is_running
          then:
            - voice_assistant.start_continuous
    on_turn_off:
      - voice_assistant.stop
      - lambda: id(assist).set_use_wake_word(false);

do someone have some spare time to help me with this to make it work please, im gonna go crazy XD

My setup:

Hardware:

Microphone: INMP441
Amp: MAX98357
Speaker: 3 watt mini speaker 8 ohm

I also have been banging my head against this wall for a while. Like @Somerley , @andiewill and @strusic I get lots of crackling noise. Both from speaker, but also from the recordings from the wake words and commands enabled by adding the following to my home assistant configuration.yaml:

assist_pipeline:
  debug_recording_dir: /share/assist_pipeline 

Crackling noise aside, it DOES work, but not as well I expect! The crackling noise heavily disrupts the speech recognition. I've enabled GPU powered speech-to-text on a Proxmox container that runs a docker, and it is blazing fast and really good, taking into account all the disruptions in the recordings. Without the disruptions/crackling noise, this setup would be so awesome! It really eats my brain all these crackling noises!

I've search the web, many suggestnings of fixing solderings, cables etc, splitting i2s to in/out. I've tried everything. Nothing seems to work. Except this one suggestion, that is outside the realm of possibilities of ESPhome.

In that thread Vegethalia writes:

Ok I'll answer myself, just in case this serves someone else: The problem was that I had configured the I2S in 16 bit mode, and then I was only capturing the MSB of the bit stream. If I configured 24 bits, then the stream was garbled. The solution is to configure I2S in 32 bits mode and when reading, each sample takes 4 bytes and one must be discarted. Like this:

REAL_BYTES_X_SAMPLE=4;

i2s_read(I2S_NUM_0, (void*)dataOrig, buffSizeOrig, &bytesRead, portMAX_DELAY);
uint16_t samplesRead = bytesRead / REAL_BYTES_X_SAMPLE;
for (int i = 0; i < samplesRead; i++) {
    byteIndex = i * REAL_BYTES_X_SAMPLE;
    int32_t value = ((int32_t*)(dataOrig + byteIndex))[0]>>8;
}

Even though you can specify "bits_per_sample:" for your microphone, you can only set it to 16bit or 32bit. You are not able to specify that level of detail of the recordnings as suggested in the post.

After changing output to a media_player (and changing platform to arduino) the crackling noise disappeared from the response in the speakers, the recordings saved by home assistant is still crackling.. The crackling MUST something related to the I2S microphone on my system.

I've tried different GIPO:s for the I2S, trying to make guesses from the pinout for my board. But I've not found any pins that make any difference.

Code:

esphome:
  name: esp32-mic-speaker
  friendly_name: esp32-mic-speaker
  on_boot:
     - priority: -100
       then:
         - wait_until: api.connected
         - delay: 1s
         - if:
             condition:
               switch.is_on: use_wake_word
             then:
               - voice_assistant.start_continuous:

esp32:
  board: az-delivery-devkit-v4
  framework:
    type: arduino
    version: recommended

# Enable logging
logger:
  level: VERBOSE

# Enable Home Assistant API
api:
  encryption:
    key: "llorem ipsum"

ota:
  password: "lorem ipsum"

wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password

  # Enable fallback hotspot (captive portal) in case wifi connection fails
  ap:
    ssid: "Esp32-Mic-Speaker"
    password: "loremipsum"


i2s_audio:
  - id: i2s_out
    i2s_lrclk_pin: GPIO21
    i2s_bclk_pin: GPIO22
  - id: i2s_in
    i2s_lrclk_pin: GPIO26
    i2s_bclk_pin: GPIO25

microphone:
  - platform: i2s_audio
    i2s_audio_id: i2s_in
    id: mic
    adc_type: external
    i2s_din_pin: GPIO13
    pdm: false
    bits_per_sample: 32bit

media_player:
  - platform: i2s_audio
    name: "esp_speaker"
    id: media_player_speaker
    i2s_audio_id: i2s_out
    dac_type: external
    i2s_dout_pin: GPIO33   
    mode: mono
    
voice_assistant:
  microphone: mic
  use_wake_word: false
  noise_suppression_level: 4
  auto_gain: 31dBFS
  volume_multiplier: 2
  media_player: media_player_speaker
  id: assist

switch:
  - platform: template
    name: Use wake word
    id: use_wake_word
    optimistic: true
    restore_mode: RESTORE_DEFAULT_ON
    entity_category: config
    on_turn_on:
      - lambda: id(assist).set_use_wake_word(true);
      - if:
          condition:
            not:
              - voice_assistant.is_running
          then:
            - voice_assistant.start_continuous
    on_turn_off:
      - voice_assistant.stop
      - lambda: id(assist).set_use_wake_word(false);

I've purchased other I2S mics, but they are four weeks away. Any suggestions on how to remove the crackling from the INMP441 recordnings ?

I also have INMP441 connected to esp32 so I checked the recording ans also hear some crackling -I'v attached one such sample with me clicking on the keyboard in the background... Is that the level of cracks you are talking about?

…

On Thu, Dec 28, 2023 at 4:52 PM n00btotal ***@***.***> wrote: @n00btotal commented on this gist. ________________________________ My setup: Hardware: Microphone: INMP441 Amp: MAX98357 Speaker: 3 watt mini speaker 8 ohm I also have been banging my head against this wall for a while. Like @Somerley , @andiewill and @strusic I get lots of crackling noise. Both from speaker, but also from the recordings from the wake words and commands enabled by adding the following to my home assistant configuration.yaml: assist_pipeline: debug_recording_dir: /share/assist_pipeline Crackling noise aside, it DOES work, but not as well I expect! The crackling noise heavily disrupts the speech recognition. I've enabled GPU powered speech-to-text on a Proxmox container that runs a docker, and it is blazing fast and really good, taking into account all the disruptions in the recordings. Without the disruptions/crackling noise, this setup would be so awesome! It really eats my brain all these crackling noises! I've search the web, many suggestnings of fixing solderings, cables etc, splitting i2s to in/out. I've tried everything. Nothing seems to work. Except this one suggestion, that is outside the realm of possibilities of ESPhome. In that thread Vegethalia writes: Ok I'll answer myself, just in case this serves someone else: The problem was that I had configured the I2S in 16 bit mode, and then I was only capturing the MSB of the bit stream. If I configured 24 bits, then the stream was garbled. The solution is to configure I2S in 32 bits mode and when reading, each sample takes 4 bytes and one must be discarted. Like this: REAL_BYTES_X_SAMPLE=4; i2s_read(I2S_NUM_0, (void*)dataOrig, buffSizeOrig, &bytesRead, portMAX_DELAY); uint16_t samplesRead = bytesRead / REAL_BYTES_X_SAMPLE; for (int i = 0; i < samplesRead; i++) { byteIndex = i * REAL_BYTES_X_SAMPLE; int32_t value = ((int32_t*)(dataOrig + byteIndex))[0]>>8; } Even though you can specify "bits_per_sample:" for your microphone, you can only set it to 16bit or 32bit. You are not able to specify that level of detail of the recordnings as suggested in the post. After changing output to a media_player (and changing platform to arduino) the crackling noise disappeared from the response in the speakers, the recordings saved by home assistant is still crackling.. The crackling MUST something related to the I2S microphone on my system. I've tried different GIPO:s for the I2S, trying to make guesses from the pinout for my board. But I've not found any pins that make any difference. Code: esphome: name: esp32-mic-speaker friendly_name: esp32-mic-speaker on_boot: - priority: -100 then: - wait_until: api.connected - delay: 1s - if: condition: switch.is_on: use_wake_word then: - voice_assistant.start_continuous: esp32: board: az-delivery-devkit-v4 framework: type: arduino version: recommended # Enable logging logger: level: VERBOSE # Enable Home Assistant API api: encryption: key: "llorem ipsum" ota: password: "lorem ipsum" wifi: ssid: !secret wifi_ssid password: !secret wifi_password # Enable fallback hotspot (captive portal) in case wifi connection fails ap: ssid: "Esp32-Mic-Speaker" password: "loremipsum" i2s_audio: - id: i2s_out i2s_lrclk_pin: GPIO21 i2s_bclk_pin: GPIO22 - id: i2s_in i2s_lrclk_pin: GPIO26 i2s_bclk_pin: GPIO25 microphone: - platform: i2s_audio i2s_audio_id: i2s_in id: mic adc_type: external i2s_din_pin: GPIO13 pdm: false bits_per_sample: 32bit media_player: - platform: i2s_audio name: "esp_speaker" id: media_player_speaker i2s_audio_id: i2s_out dac_type: external i2s_dout_pin: GPIO33 mode: mono voice_assistant: microphone: mic use_wake_word: false noise_suppression_level: 4 auto_gain: 31dBFS volume_multiplier: 2 media_player: media_player_speaker id: assist switch: - platform: template name: Use wake word id: use_wake_word optimistic: true restore_mode: RESTORE_DEFAULT_ON entity_category: config on_turn_on: - lambda: id(assist).set_use_wake_word(true); - if: condition: not: - voice_assistant.is_running then: - voice_assistant.start_continuous on_turn_off: - voice_assistant.stop - lambda: id(assist).set_use_wake_word(false); I've purchased other I2S mics, but they are four weeks away. Any suggestions on how to remove the crackling from the INMP441 recordnings ? — Reply to this email directly, view it on GitHub or unsubscribe. You are receiving this email because you commented on the thread. Triage notifications on the go with GitHub Mobile for iOS or Android.

Also, running non ESPHome I2S (from esp-idf examples) code with capturing 32bit and then bit shifting 8 bit resulted in much cleaner audio (although also with a very faint hiss - not cracks)

…

On Fri, Dec 29, 2023 at 10:43 PM Lior Assouline ***@***.***> wrote: I also have INMP441 connected to esp32 so I checked the recording ans also hear some crackling -I'v attached one such sample with me clicking on the keyboard in the background... Is that the level of cracks you are talking about? On Thu, Dec 28, 2023 at 4:52 PM n00btotal ***@***.***> wrote: > > @n00btotal commented on this gist. > ________________________________ > > My setup: > > Hardware: > > Microphone: INMP441 > Amp: MAX98357 > Speaker: 3 watt mini speaker 8 ohm > > I also have been banging my head against this wall for a while. Like @Somerley , @andiewill and @strusic I get lots of crackling noise. Both from speaker, but also from the recordings from the wake words and commands enabled by adding the following to my home assistant configuration.yaml: > > assist_pipeline: > debug_recording_dir: /share/assist_pipeline > > Crackling noise aside, it DOES work, but not as well I expect! The crackling noise heavily disrupts the speech recognition. I've enabled GPU powered speech-to-text on a Proxmox container that runs a docker, and it is blazing fast and really good, taking into account all the disruptions in the recordings. Without the disruptions/crackling noise, this setup would be so awesome! It really eats my brain all these crackling noises! > > I've search the web, many suggestnings of fixing solderings, cables etc, splitting i2s to in/out. I've tried everything. Nothing seems to work. Except this one suggestion, that is outside the realm of possibilities of ESPhome. > > In that thread Vegethalia writes: > > Ok I'll answer myself, just in case this serves someone else: The problem was that I had configured the I2S in 16 bit mode, and then I was only capturing the MSB of the bit stream. If I configured 24 bits, then the stream was garbled. The solution is to configure I2S in 32 bits mode and when reading, each sample takes 4 bytes and one must be discarted. Like this: > > REAL_BYTES_X_SAMPLE=4; > > i2s_read(I2S_NUM_0, (void*)dataOrig, buffSizeOrig, &bytesRead, portMAX_DELAY); > uint16_t samplesRead = bytesRead / REAL_BYTES_X_SAMPLE; > for (int i = 0; i < samplesRead; i++) { > byteIndex = i * REAL_BYTES_X_SAMPLE; > int32_t value = ((int32_t*)(dataOrig + byteIndex))[0]>>8; > } > > Even though you can specify "bits_per_sample:" for your microphone, you can only set it to 16bit or 32bit. You are not able to specify that level of detail of the recordnings as suggested in the post. > > After changing output to a media_player (and changing platform to arduino) the crackling noise disappeared from the response in the speakers, the recordings saved by home assistant is still crackling.. The crackling MUST something related to the I2S microphone on my system. > > I've tried different GIPO:s for the I2S, trying to make guesses from the pinout for my board. But I've not found any pins that make any difference. > > Code: > > esphome: > name: esp32-mic-speaker > friendly_name: esp32-mic-speaker > on_boot: > - priority: -100 > then: > - wait_until: api.connected > - delay: 1s > - if: > condition: > switch.is_on: use_wake_word > then: > - voice_assistant.start_continuous: > > esp32: > board: az-delivery-devkit-v4 > framework: > type: arduino > version: recommended > > # Enable logging > logger: > level: VERBOSE > > # Enable Home Assistant API > api: > encryption: > key: "llorem ipsum" > > ota: > password: "lorem ipsum" > > wifi: > ssid: !secret wifi_ssid > password: !secret wifi_password > > # Enable fallback hotspot (captive portal) in case wifi connection fails > ap: > ssid: "Esp32-Mic-Speaker" > password: "loremipsum" > > > i2s_audio: > - id: i2s_out > i2s_lrclk_pin: GPIO21 > i2s_bclk_pin: GPIO22 > - id: i2s_in > i2s_lrclk_pin: GPIO26 > i2s_bclk_pin: GPIO25 > > microphone: > - platform: i2s_audio > i2s_audio_id: i2s_in > id: mic > adc_type: external > i2s_din_pin: GPIO13 > pdm: false > bits_per_sample: 32bit > > media_player: > - platform: i2s_audio > name: "esp_speaker" > id: media_player_speaker > i2s_audio_id: i2s_out > dac_type: external > i2s_dout_pin: GPIO33 > mode: mono > > voice_assistant: > microphone: mic > use_wake_word: false > noise_suppression_level: 4 > auto_gain: 31dBFS > volume_multiplier: 2 > media_player: media_player_speaker > id: assist > > switch: > - platform: template > name: Use wake word > id: use_wake_word > optimistic: true > restore_mode: RESTORE_DEFAULT_ON > entity_category: config > on_turn_on: > - lambda: id(assist).set_use_wake_word(true); > - if: > condition: > not: > - voice_assistant.is_running > then: > - voice_assistant.start_continuous > on_turn_off: > - voice_assistant.stop > - lambda: id(assist).set_use_wake_word(false); > > I've purchased other I2S mics, but they are four weeks away. Any suggestions on how to remove the crackling from the INMP441 recordnings ? > > — > Reply to this email directly, view it on GitHub or unsubscribe. > You are receiving this email because you commented on the thread. > > Triage notifications on the go with GitHub Mobile for iOS or Android. > >

I looked at the code and it looks like the default config of i2s mic is to blame... The default is set 16bit sample length (the mic gives 24 bits in a slot of 32bits). It seems like it's better to let the I2S controller capture 32bit and do the bit shifting in s/w [image: image.png] I'm attaching how it sounds... It seems like it's a little bit better.. I suspect that shifting by 14 bits is still not enough since the effective sample is still 18 bits which could clamp by the next line to 16. A better signal processing/noise reduction stage is probably required ... This is my esphome config microphone: - platform: i2s_audio id: mic i2s_din_pin: GPIO33 adc_type: external pdm: false *bits_per_sample: 32bit* Enjoy!

…

On Fri, Dec 29, 2023 at 10:46 PM Lior Assouline ***@***.***> wrote: Also, running non ESPHome I2S (from esp-idf examples) code with capturing 32bit and then bit shifting 8 bit resulted in much cleaner audio (although also with a very faint hiss - not cracks) On Fri, Dec 29, 2023 at 10:43 PM Lior Assouline ***@***.***> wrote: > > I also have INMP441 connected to esp32 so I checked the recording ans > also hear some crackling -I'v attached one such sample with me > clicking on the keyboard in the background... Is that the level of > cracks you are talking about? > > On Thu, Dec 28, 2023 at 4:52 PM n00btotal ***@***.***> wrote: > > > > @n00btotal commented on this gist. > > ________________________________ > > > > My setup: > > > > Hardware: > > > > Microphone: INMP441 > > Amp: MAX98357 > > Speaker: 3 watt mini speaker 8 ohm > > > > I also have been banging my head against this wall for a while. Like @Somerley , @andiewill and @strusic I get lots of crackling noise. Both from speaker, but also from the recordings from the wake words and commands enabled by adding the following to my home assistant configuration.yaml: > > > > assist_pipeline: > > debug_recording_dir: /share/assist_pipeline > > > > Crackling noise aside, it DOES work, but not as well I expect! The crackling noise heavily disrupts the speech recognition. I've enabled GPU powered speech-to-text on a Proxmox container that runs a docker, and it is blazing fast and really good, taking into account all the disruptions in the recordings. Without the disruptions/crackling noise, this setup would be so awesome! It really eats my brain all these crackling noises! > > > > I've search the web, many suggestnings of fixing solderings, cables etc, splitting i2s to in/out. I've tried everything. Nothing seems to work. Except this one suggestion, that is outside the realm of possibilities of ESPhome. > > > > In that thread Vegethalia writes: > > > > Ok I'll answer myself, just in case this serves someone else: The problem was that I had configured the I2S in 16 bit mode, and then I was only capturing the MSB of the bit stream. If I configured 24 bits, then the stream was garbled. The solution is to configure I2S in 32 bits mode and when reading, each sample takes 4 bytes and one must be discarted. Like this: > > > > REAL_BYTES_X_SAMPLE=4; > > > > i2s_read(I2S_NUM_0, (void*)dataOrig, buffSizeOrig, &bytesRead, portMAX_DELAY); > > uint16_t samplesRead = bytesRead / REAL_BYTES_X_SAMPLE; > > for (int i = 0; i < samplesRead; i++) { > > byteIndex = i * REAL_BYTES_X_SAMPLE; > > int32_t value = ((int32_t*)(dataOrig + byteIndex))[0]>>8; > > } > > > > Even though you can specify "bits_per_sample:" for your microphone, you can only set it to 16bit or 32bit. You are not able to specify that level of detail of the recordnings as suggested in the post. > > > > After changing output to a media_player (and changing platform to arduino) the crackling noise disappeared from the response in the speakers, the recordings saved by home assistant is still crackling.. The crackling MUST something related to the I2S microphone on my system. > > > > I've tried different GIPO:s for the I2S, trying to make guesses from the pinout for my board. But I've not found any pins that make any difference. > > > > Code: > > > > esphome: > > name: esp32-mic-speaker > > friendly_name: esp32-mic-speaker > > on_boot: > > - priority: -100 > > then: > > - wait_until: api.connected > > - delay: 1s > > - if: > > condition: > > switch.is_on: use_wake_word > > then: > > - voice_assistant.start_continuous: > > > > esp32: > > board: az-delivery-devkit-v4 > > framework: > > type: arduino > > version: recommended > > > > # Enable logging > > logger: > > level: VERBOSE > > > > # Enable Home Assistant API > > api: > > encryption: > > key: "llorem ipsum" > > > > ota: > > password: "lorem ipsum" > > > > wifi: > > ssid: !secret wifi_ssid > > password: !secret wifi_password > > > > # Enable fallback hotspot (captive portal) in case wifi connection fails > > ap: > > ssid: "Esp32-Mic-Speaker" > > password: "loremipsum" > > > > > > i2s_audio: > > - id: i2s_out > > i2s_lrclk_pin: GPIO21 > > i2s_bclk_pin: GPIO22 > > - id: i2s_in > > i2s_lrclk_pin: GPIO26 > > i2s_bclk_pin: GPIO25 > > > > microphone: > > - platform: i2s_audio > > i2s_audio_id: i2s_in > > id: mic > > adc_type: external > > i2s_din_pin: GPIO13 > > pdm: false > > bits_per_sample: 32bit > > > > media_player: > > - platform: i2s_audio > > name: "esp_speaker" > > id: media_player_speaker > > i2s_audio_id: i2s_out > > dac_type: external > > i2s_dout_pin: GPIO33 > > mode: mono > > > > voice_assistant: > > microphone: mic > > use_wake_word: false > > noise_suppression_level: 4 > > auto_gain: 31dBFS > > volume_multiplier: 2 > > media_player: media_player_speaker > > id: assist > > > > switch: > > - platform: template > > name: Use wake word > > id: use_wake_word > > optimistic: true > > restore_mode: RESTORE_DEFAULT_ON > > entity_category: config > > on_turn_on: > > - lambda: id(assist).set_use_wake_word(true); > > - if: > > condition: > > not: > > - voice_assistant.is_running > > then: > > - voice_assistant.start_continuous > > on_turn_off: > > - voice_assistant.stop > > - lambda: id(assist).set_use_wake_word(false); > > > > I've purchased other I2S mics, but they are four weeks away. Any suggestions on how to remove the crackling from the INMP441 recordnings ? > > > > — > > Reply to this email directly, view it on GitHub or unsubscribe. > > You are receiving this email because you commented on the thread. > > > > Triage notifications on the go with GitHub Mobile for iOS or Android. > > > >

I've tried changing bits_per_sample: 32bit back and forth, but crackling is still there. I'll attach a sound (with no recording, just the constant crackling).

crackling_sound_azdelivery_esp32.mp4

I've tried changing bits_per_sample: 32bit back and forth, but crackling is still there. I'll attach a sound (with no recording, just the constant crackling).

crackling_sound_azdelivery_esp32.mp4

I had to redo my code again and made a slight change due to using a strapping pin in the first esp32, which messed around with my how the VA worked, after loosing my original config due to server issues, through trial and error again i got it working well with no crackling, the only thing different to your config and mine is that you are using the media player and i am using speaker and of course lights etc, my config below FYI, also using the latest HA.

`
ap:
ssid: "Esp32-Mic-Speaker"
password: "9vYvAFzzPjuc"

captive_portal:

i2s_audio:

• id: i2s_out
  i2s_lrclk_pin: GPIO27
  i2s_bclk_pin: GPIO26
• id: i2s_in
  i2s_lrclk_pin: GPIO14
  i2s_bclk_pin: GPIO21

microphone:

• platform: i2s_audio
  i2s_audio_id: i2s_in
  id: mic
  i2s_din_pin: GPIO13
  adc_type: external
  pdm: false
  bits_per_sample: 32bit

speaker:

• platform: i2s_audio
  i2s_audio_id: i2s_out
  id: big_speaker
  i2s_dout_pin: GPIO25
  dac_type: external
  mode: mono

voice_assistant:
microphone: mic
id: assist
speaker: big_speaker
use_wake_word: false
noise_suppression_level: 2
auto_gain: 31dBFS
on_listening:
- light.turn_on:
id: led
blue: 100%
red: 0%
green: 0%
brightness: 100%
effect: pulse
on_tts_start:
- light.turn_on:
id: led
blue: 0%
red: 0%
green: 100%
effect: pulse
on_tts_end:
- light.turn_on:
id: led
blue: 60%
red: 20%
green: 20%
effect: pulse
on_end:
- delay: 100ms
- wait_until:
not:
speaker.is_playing:
- script.execute: reset_led
on_error:
- light.turn_on:
id: led
blue: 0%
red: 100%
green: 0%
brightness: 100%
effect: pulse
- delay: 1s
- script.execute: reset_led
- lambda: |-
if (code == "wake-provider-missing" || code == "wake-engine-missing") {
id(use_wake_word).turn_off();
}
light:

• platform: esp32_rmt_led_strip
  rgb_order: RGB
  pin: GPIO33
  num_leds: 2
  rmt_channel: 0
  chipset: ws2812
  name: "led"
  id: led
  effects:
  • pulse:
  • pulse:
    name: "Fast Pulse"
    transition_length: 0.5s
    update_interval: 0.5s
    min_brightness: 0%
    max_brightness: 100%
  • pulse:
    name: "Slow Pulse"
    transition_length: 1s # defaults to 1s
    update_interval: 2s
  • random:
  • random:
    name: Random Effect With Custom Values
    transition_length: 5s
    update_interval: 7s
  • strobe:
  • strobe:
    name: Strobe Effect With Custom Values
    colors:
    - state: true
    brightness: 100%
    red: 100%
    green: 90%
    blue: 20%
    duration: 500ms
    - state: false
    duration: 250ms
    - state: true
    brightness: 100%
    red: 0%
    green: 100%
    blue: 0%
    duration: 500ms
  • flicker:
  • flicker:
    name: Flicker Effect With Custom Values
    alpha: 95%
    intensity: 1.5%
  • addressable_rainbow:
  • addressable_rainbow:
    name: Rainbow Effect With Custom Values
    speed: 10
    width: 50
  • addressable_color_wipe:
  • addressable_color_wipe:
    name: Color Wipe Effect With Custom Values
    colors:
    - red: 100%
    green: 100%
    blue: 100%
    num_leds: 1
    - red: 0%
    green: 0%
    blue: 0%
    num_leds: 1
    add_led_interval: 100ms
    reverse: false
  • addressable_random_twinkle:
  • addressable_random_twinkle:
    name: Random Twinkle Effect With Custom Values
    twinkle_probability: 5%
    progress_interval: 32ms
  • addressable_fireworks:
  • addressable_fireworks:
    name: Fireworks Effect With Custom Values
    update_interval: 32ms
    spark_probability: 10%
    use_random_color: false
    fade_out_rate: 120

script:

• id: reset_led
  then:
  • if:
    condition:
    switch.is_on: use_wake_word
    then:
    - light.turn_on:
    id: led
    blue: 100%
    red: 100%
    green: 0%
    brightness: 100%
    effect: none
    else:
    - light.turn_off: led

switch:

• platform: template
  name: Use wake word
  id: use_wake_word
  optimistic: true
  restore_mode: RESTORE_DEFAULT_ON
  entity_category: config
  on_turn_on:
  • lambda: id(assist).set_use_wake_word(true);
  • if:
    condition:
    not:
    - voice_assistant.is_running
    then:
    - voice_assistant.start_continuous
  • script.execute: reset_led
    on_turn_off:
  • voice_assistant.stop
  • lambda: id(assist).set_use_wake_word(false);
  • script.execute: reset_led
• platform: template
  name: Use Listen Light
  id: use_listen_light
  optimistic: true
  restore_mode: RESTORE_DEFAULT_ON
  entity_category: config
  on_turn_on:
  • script.execute: reset_led
    on_turn_off:
  • script.execute: reset_led

external_components:

• source: github://pr#5230
  components:
  • esp_adf
    refresh: 0s
    `

I know this is likely to get buried, but just for everyone that is still struggling with this process here is my working config file for an INMP441 microphone and a PCM5102 DAC as the sound output. This device functions with wakeword detection and as a media player from HA. I spent a week bashing my head against this before I found out that my issue was actually network related. The firewall on my HA server (running HA container) was not allowing the UDP connection from the ESP32 devices. I have not been able to narrow down which port is used for the mic streaming so right now I just all all UDP from the IP address of my ESP32 allowed in ufw.

Wiring as Follows:

ESP32 Pin Label	INMP441 Pin Label	PCM5102 Pin Label
5V		VIN
3.3V	VDD, L/R
GND	GND	GND
GPIO33	SCK	BCK
GPIO25	WS	LCK
GPIO22		DIN
GPIO32	SD

I did need to solder connections to the PCM5102 in order to get reliable audio. With jumper wires on a breadboard, the audio would cut out regularly and the whole set up needed to be held "just right" to have any audio at all.

Working config on a generic ESP32 dev kit:

esphome:
  # Working configuration for internet radio but no working voice
  name: hava-media
  friendly_name: HAVA-media
  on_boot:
    - priority: -100
      then:
        - wait_until: api.connected
        - delay: 1s
        - if:
            condition:
              switch.is_on: use_wake_word
            then:
              - voice_assistant.start_continuous:

esp32:
  board: esp32dev
  framework:
    type: arduino

# Enable logging
logger:
  baud_rate: 115200
  level: DEBUG

# Enable Home Assistant API
api:
  encryption:
    key: ""

ota:
  password: ""

wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password

  # Enable fallback hotspot (captive portal) in case wifi connection fails
  ap:
    ssid: "Hava-Media Fallback Hotspot"
    password: ""

captive_portal:

i2s_audio:
  - id: i2s_in
    i2s_lrclk_pin: GPIO25 #INMP441 WS | PCM5102 LCK 
    i2s_bclk_pin: GPIO33 # INMP441 SCK | PCM5102 BCK

media_player:
  - platform: i2s_audio
    name: "esp_speaker"
    id: media_player_speaker
    i2s_audio_id: i2s_in
    dac_type: external
    i2s_dout_pin: GPIO22   #  PCM5102 DIN
    mode: stereo

microphone:
  - platform: i2s_audio
    adc_type: external
    pdm: false
    id: mic_i2s
    channel: left # L/R pin pulled high
    bits_per_sample: 32bit
    i2s_audio_id: i2s_in
    i2s_din_pin: GPIO32  #INMP441 SD

output:
    # onboard
  - platform: ledc
    pin: GPIO2
    id: onboard_led
    inverted: false

light:
  - platform: monochromatic
    output: onboard_led
    id: response_light
    name: "Onboard LED"
    default_transition_length: 0.1s

voice_assistant:
  id: va
  microphone: mic_i2s
  media_player: media_player_speaker
  noise_suppression_level: 0
  auto_gain: 10dBFS
  volume_multiplier: 2.0
  on_listening:
    - light.turn_on: response_light
  on_end:
    - light.turn_off: response_light

switch:
  - platform: template
    name: Use wake word
    id: use_wake_word
    optimistic: true
    restore_mode: RESTORE_DEFAULT_ON
    entity_category: config
    on_turn_on:
      - lambda: id(va).set_use_wake_word(true);
      - if:
          condition:
            not:
              - voice_assistant.is_running
          then:
            - voice_assistant.start_continuous

    on_turn_off:
      - voice_assistant.stop
      - lambda: id(va).set_use_wake_word(false);

@ibrummel , where are speaker and/or media_player in the Yaml config ?

@Krull56 My apologies. I must have copy pasted out of the wrong file. I have a lot of things open. I have updated my original post with the correct code as well as adding some notes on wiring.

I am trying to get this to work with a ESP32 C3 Super Mini. Has anyone tried that before?

Sometimes I boot the esp and then suddenly it is giving a whole bunch of log lines within the same second, the cycle over and over. Code without light works fine.
[14:28:18][E][voice_assistant:646]: Error: no_wake_word - No wake word detected
[14:28:18][D][voice_assistant:512]: Signaling stop...
[14:28:18][D][voice_assistant:412]: State changed from STARTING_PIPELINE to STOP_MICROPHONE
[14:28:18][D][voice_assistant:418]: Desired state set to IDLE
[14:28:18][D][voice_assistant:412]: State changed from STOP_MICROPHONE to IDLE
[14:28:18][D][voice_assistant:519]: Event Type: 2
[14:28:18][D][voice_assistant:609]: Assist Pipeline ended
[14:28:18][D][voice_assistant:412]: State changed from IDLE to START_PIPELINE
[14:28:18][D][voice_assistant:418]: Desired state set to START_MICROPHONE
[14:28:18][D][voice_assistant:512]: Signaling stop...
[14:28:18][D][voice_assistant:118]: microphone not running
[14:28:18][D][voice_assistant:200]: Requesting start...
[14:28:18][D][voice_assistant:412]: State changed from START_PIPELINE to STARTING_PIPELINE
[14:28:18][D][voice_assistant:519]: Event Type: 1
[14:28:18][D][voice_assistant:522]: Assist Pipeline running
[14:28:18][D][voice_assistant:118]: microphone not running
[14:28:18][D][voice_assistant:519]: Event Type: 9
[14:28:18][D][voice_assistant:118]: microphone not running
[14:28:18][D][voice_assistant:519]: Event Type: 0
Just over and over within the same second. Sometimes restarting it works, sometimes it starts working on its own. How to fix?
I used the original code.
Sometimes it wont even start the code after unplug/replug. Then the speaker starts crackling loudly, sometimes not. Very buggy.

@BlackCube4 I read somewhere that won't work. Did you make it work anyway?

@Xornop That logging loop is what you would expect to see. When a wake word is detected the logs will start showing the intent flow.

Unfortunately there are issues with ESP home and i2s/voice assist. After getting everything working on the hardware side Im able to trigger one or two commands before the assist pipe line just stops running.

[10:16:42][D][voice_assistant:519]: Event Type: 7 [10:16:42][D][voice_assistant:575]: Response: "The office lights have been turned on." [10:16:42][VV][scheduler:032]: set_timeout(name='', timeout=0) [10:16:42][VV][scheduler:226]: Running timeout '' with interval=0 last_execution=108935 (now=108948) [10:16:42][VV][api.service:920]: on_voice_assistant_event_response: VoiceAssistantEventResponse { event_type: VOICE_ASSISTANT_TTS_END data: VoiceAssistantEventData { name: 'url' value: 'http://192.168.1.165:8123/api/tts_proxy/2a7ce8cec50032f5696e5e16702bb5339ec37ebe_en-us_03ed9f9845_cloud.wav' } } [10:16:42][D][voice_assistant:519]: Event Type: 8 [10:16:42][D][voice_assistant:595]: Response URL: "http://192.168.1.165:8123/api/tts_proxy/2a7ce8cec50032f5696e5e16702bb5339ec37ebe_en-us_03ed9f9845_cloud.wav" [10:16:42][VV][scheduler:032]: set_timeout(name='', timeout=0) [10:16:42][D][voice_assistant:412]: State changed from AWAITING_RESPONSE to STREAMING_RESPONSE [10:16:42][D][voice_assistant:418]: Desired state set to STREAMING_RESPONSE [10:16:42][W][component:214]: Component api took a long time for an operation (0.07 s). [10:16:42][W][component:215]: Components should block for at most 20-30ms. [10:16:42][VV][scheduler:032]: set_timeout(name='speaker-timeout', timeout=5000) [10:16:42][VV][scheduler:032]: set_timeout(name='speaker-timeout', timeout=5000) [10:16:42][VV][scheduler:032]: set_timeout(name='speaker-timeout', timeout=5000) [10:16:42][VV][scheduler:032]: set_timeout(name='speaker-timeout', timeout=5000) [10:16:42][VV][scheduler:032]: set_timeout(name='speaker-timeout', timeout=5000) [10:16:43][VV][scheduler:032]: set_timeout(name='speaker-timeout', timeout=5000) [10:16:43][VV][scheduler:032]: set_timeout(name='speaker-timeout', timeout=5000) [10:16:43][VV][scheduler:032]: set_timeout(name='speaker-timeout', timeout=5000) [10:16:43][VV][scheduler:032]: set_timeout(name='speaker-timeout', timeout=5000) [10:16:43][VV][scheduler:032]: set_timeout(name='speaker-timeout', timeout=5000) [10:16:43][VV][scheduler:032]: set_timeout(name='speaker-timeout', timeout=5000) [10:16:43][VV][scheduler:032]: set_timeout(name='speaker-timeout', timeout=5000) [10:16:43][VV][scheduler:032]: set_timeout(name='speaker-timeout', timeout=5000) [10:16:43][VV][scheduler:032]: set_timeout(name='speaker-timeout', timeout=5000) [10:16:43][VV][scheduler:032]: set_timeout(name='speaker-timeout', timeout=5000) [10:16:43][VV][scheduler:032]: set_timeout(name='speaker-timeout', timeout=5000) [10:16:43][VV][scheduler:032]: set_timeout(name='speaker-timeout', timeout=5000) [10:16:43][VV][scheduler:032]: set_timeout(name='speaker-timeout', timeout=5000) [10:16:43][VV][scheduler:032]: set_timeout(name='speaker-timeout', timeout=5000) [10:16:43][VV][scheduler:032]: set_timeout(name='speaker-timeout', timeout=5000) [10:16:43][VV][scheduler:032]: set_timeout(name='speaker-timeout', timeout=5000) [10:16:43][VV][scheduler:032]: set_timeout(name='speaker-timeout', timeout=5000) [10:16:43][VV][scheduler:032]: set_timeout(name='speaker-timeout', timeout=5000) [10:16:43][VV][api.service:920]: on_voice_assistant_event_response: VoiceAssistantEventResponse { event_type: VOICE_ASSISTANT_TTS_STREAM_END } [10:16:43][D][voice_assistant:519]: Event Type: 99 [10:16:43][D][voice_assistant:665]: TTS stream end [10:16:43][D][voice_assistant:283]: End of audio stream received [10:16:43][D][voice_assistant:412]: State changed from STREAMING_RESPONSE to RESPONSE_FINISHED [10:16:43][D][voice_assistant:418]: Desired state set to RESPONSE_FINISHED [10:17:04][VV][api.service:558]: on_ping_request: PingRequest {} [10:17:04][VV][api.service:043]: send_ping_response: PingResponse {} [10:17:08][VV][api.connection:132]: Sending keepalive PING... [10:17:08][VV][api.service:037]: send_ping_request: PingRequest {} [10:17:08][VV][api.service:567]: on_ping_response: PingResponse {} [10:17:33][VV][scheduler:226]: Running interval '' with interval=60000 last_execution=101421 (now=161421) [10:17:44][VV][api.service:558]: on_ping_request: PingRequest {} [10:17:44][VV][api.service:043]: send_ping_response: PingResponse {} [10:18:08][VV][api.service:558]: on_ping_request: PingRequest {} [10:18:08][VV][api.service:043]: send_ping_response: PingResponse {} [10:18:24][VV][api.service:558]: on_ping_request: PingRequest {} [10:18:24][VV][api.service:043]: send_ping_response: PingResponse {} [10:18:33][VV][scheduler:226]: Running interval '' with interval=60000 last_execution=161421 (now=221421)

The device will just keeping pinging until it is rebooted. Once rebooted I can run 1-2 commands and then i run into the same issue. Looking around on the forms im seeing other have the same issue.

@BlackCube4 I read somewhere that won't work. Did you make it work anyway?

I got it to work fine~ish

@Xornop That logging loop is what you would expect to see. When a wake word is detected the logs will start showing the intent flow.

Not within the same second, it completely freezes up the esp.

...I found out that my issue was actually network related. The firewall on my HA server (running HA container) was not allowing the UDP connection from the ESP32 devices. I have not been able to narrow down which port is used for the mic streaming so right now I just all all UDP from the IP address of my ESP32 allowed in ufw.

@ibrummel Thank you!!! I've been banging my head against the desk for an hour trying to figure this out. I would have never in a million years thought of a firewall issue - I'm so used to ESPHome devices working without messing with the firewall and never would have considered that this uses UDP.

Has anyone managed the fix the crackling noise? As soon as i switch the wakeword option on. the speaker starts to make this crackling noise. changing the bitrate didn´t help. i tried another esp32 board/mic/amp, but the problem stays the same.

Has anyone managed the fix the crackling noise? As soon as i switch the wakeword option on. the speaker starts to make this crackling noise. changing the bitrate didn´t help. i tried another esp32 board/mic/amp, but the problem stays the same.

Change the dout pin on the speaker. I have mine on GPIO12.

i2s_audio:
  - id: i2s_in
    i2s_lrclk_pin: GPIO25
    i2s_bclk_pin: GPIO26
  - id: i2s_out
    i2s_lrclk_pin: GPIO32
    i2s_bclk_pin: GPIO13

microphone:
  platform: i2s_audio 
  id: external_microphone 
  adc_type: external 
  i2s_audio_id: i2s_in
  i2s_din_pin: GPIO34
  pdm: false
  bits_per_sample: 32bit


speaker:
  platform: i2s_audio 
  id: external_speaker 
  dac_type: external
  i2s_audio_id: i2s_out
  i2s_dout_pin: GPIO12
  mode: mono 

Anybody know how to limit the max volume with the Max98357?

Ive built 3 of these now:
https://youtube.com/shorts/-tBJXZdqqRw?si=Tfem5Rv8X2GZ0gWe
A couple things I have learned.
Be careful with the Microphone, the INMP441. If you get it too hot, you'll kill it. If you have a long delay between the command and the action, its more than likely the microphone.
I seem to have better luck building and wiring the voice assistant before loading the firmware onto it. So, get the basic firmware loaded, then build and wire the voice assistant. After that, load the final firmware.
If you are just seeing the basic firmware in the ESP32 interface, select "Clean Build Files" in ESP home by clicking the 3 dots, and then upload the firmware.
Spamming too many commands too quickly will freeze the pipeline. In normal use, you wont be sending 10 commands a minute, so slow down in testing.
The YAML im using. Credit goes to this guy:
https://github.com/ubergeek10/My-ESP32-Assistant

substitutions:
  voice_assist_idle_phase_id: '1'
  voice_assist_listening_phase_id: '2'
  voice_assist_thinking_phase_id: '3'
  voice_assist_replying_phase_id: '4'
  voice_assist_not_ready_phase_id: '10'
  voice_assist_error_phase_id: '11'
  voice_assist_muted_phase_id: '12'
esphome:
  name: bedroom-voice-assistant
  friendly_name: Bedroom Voice assistant

  on_boot:
    priority: 600
    then:
      - script.execute: control_led
      - delay: 30s
      - if:
          condition:
            lambda: return id(init_in_progress);
          then:
            - lambda: id(init_in_progress) = false;
            - script.execute: control_led

esp32:
  board: esp32dev
  framework:
    type: esp-idf


# Enable logging
logger:

# Enable Home Assistant API
api:
  encryption:
    key: "snip"

ota:
  password: "snip"

wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password

  # Enable fallback hotspot (captive portal) in case wifi connection fails
  ap:
    ssid: "Bedroom-Voice-Assistant"
    password: "snip"

esp_adf:
external_components:
  - source: github://pr#5230
    components:
    - esp_adf 
    refresh: 0s

captive_portal:

light:
  - platform: esp32_rmt_led_strip
    rgb_order: GRB
    pin: GPIO18
    num_leds: 3
    rmt_channel: 0
    chipset: WS2812
    name: "Status LED"
    id: led
    default_transition_length: 0s
    effects:
      - pulse:
          name: "extra_slow_pulse"
          transition_length: 800ms
          update_interval: 800ms
          min_brightness: 0%
          max_brightness: 30%
      - pulse:
          name: "slow_pulse"
          transition_length: 250ms
          update_interval: 250ms
          min_brightness: 50%
          max_brightness: 100%
      - pulse:
          name: "fast_pulse"
          transition_length: 100ms
          update_interval: 100ms
          min_brightness: 50%
          max_brightness: 100%

i2s_audio:
  - id: i2s_in
    i2s_lrclk_pin: GPIO25
    i2s_bclk_pin: GPIO26
  - id: i2s_out
    i2s_lrclk_pin: GPIO32
    i2s_bclk_pin: GPIO13

microphone:
  platform: i2s_audio 
  id: external_microphone 
  adc_type: external 
  i2s_audio_id: i2s_in
  i2s_din_pin: GPIO34
  pdm: false
  bits_per_sample: 32bit


speaker:
  platform: i2s_audio 
  id: external_speaker 
  dac_type: external
  i2s_audio_id: i2s_out
  i2s_dout_pin: GPIO12
  mode: mono 

voice_assistant:
  id: va
  microphone: external_microphone 
  speaker: external_speaker
  use_wake_word: true
  noise_suppression_level: 1
  auto_gain: 31dBFS
  volume_multiplier: 2.5

  on_listening:
    - lambda: id(voice_assistant_phase) = ${voice_assist_listening_phase_id};
    - script.execute: control_led

  on_stt_vad_end:
    - lambda: id(voice_assistant_phase) = ${voice_assist_thinking_phase_id};
    - script.execute: control_led

  on_tts_stream_start:
    - lambda: id(voice_assistant_phase) = ${voice_assist_replying_phase_id};
    - script.execute: control_led

  on_tts_stream_end:
    - lambda: id(voice_assistant_phase) = ${voice_assist_idle_phase_id};
    - script.execute: control_led

  on_error: 
    - if:
        condition:
          lambda: return !id(init_in_progress);
        then:
          - lambda: id(voice_assistant_phase) = ${voice_assist_error_phase_id};
          - script.execute: control_led
          - delay: 1s
          - if:
              condition:
                switch.is_on: use_wake_word
              then:
                - lambda: id(voice_assistant_phase) = ${voice_assist_idle_phase_id};
              else:
                - lambda: id(voice_assistant_phase) = ${voice_assist_muted_phase_id};
          - script.execute: control_led

  on_client_connected: 
    - if:
        condition:
          switch.is_on: use_wake_word
        then:
          - voice_assistant.start_continuous
          - lambda: id(voice_assistant_phase) = ${voice_assist_idle_phase_id};
        else:
          - lambda: id(voice_assistant_phase) = ${voice_assist_muted_phase_id};
    - script.execute: control_led          

  on_client_disconnected: 
    - lambda: id(voice_assistant_phase) = ${voice_assist_not_ready_phase_id};
    - script.execute: control_led

switch:
  - platform: template
    name: Use Wake Word
    id: use_wake_word
    optimistic: true
    restore_mode: RESTORE_DEFAULT_ON
    on_turn_on:
      - if:
          condition:
            lambda: return !id(init_in_progress);
          then:
            - lambda: id(voice_assistant_phase) = ${voice_assist_idle_phase_id};
            - if:
                condition:
                    not:
                      - voice_assistant.is_running
                then:
                  - voice_assistant.start_continuous
            - script.execute: control_led          
 
    on_turn_off:
      - if:
          condition:
            lambda: return !id(init_in_progress);
          then:
            - voice_assistant.stop
            - lambda: id(voice_assistant_phase) = ${voice_assist_muted_phase_id};
            - script.execute: control_led          

globals:
  - id: init_in_progress
    type: bool
    restore_value: no
    initial_value: 'true'
  - id: voice_assistant_phase
    type: int
    restore_value: no
    initial_value: ${voice_assist_not_ready_phase_id}
  
script:
  - id: control_led
    then:
      - if:
          condition:
            lambda: return !id(init_in_progress);
          then:
            - if:
                condition:
                    wifi.connected:
                then:
                  - if:
                      condition:
                          api.connected:
                      then:
                        - lambda: |
                            switch(id(voice_assistant_phase)) {
                              case ${voice_assist_listening_phase_id}:
                                id(led).turn_on().set_rgb(0, 0, 1).set_brightness(1.0).set_effect("none").perform();
                                break;
                              case ${voice_assist_thinking_phase_id}:
                                id(led).turn_on().set_rgb(0, 1, 0).set_effect("slow_pulse").perform();
                                break;
                              case ${voice_assist_replying_phase_id}:
                                id(led).turn_on().set_rgb(0, 0, 1).set_brightness(1.0).set_effect("fast_pulse").perform();
                                break;
                              case ${voice_assist_error_phase_id}:
                                id(led).turn_on().set_rgb(1, 1, 1).set_brightness(.5).set_effect("none").perform();
                                break;
                              case ${voice_assist_muted_phase_id}:
                                id(led).turn_off().perform();
                                break;
                              case ${voice_assist_not_ready_phase_id}:
                                id(led).turn_on().perform();
                                break;
                              default:
                                id(led).turn_on().set_rgb(1, 0, 0).set_brightness(0.2).set_effect("none").perform();
                                break;
                            }
                      else:
                        - light.turn_off:
                            id: led
                else:
                  - light.turn_off:
                      id: led
          else:
            - light.turn_on:
                id: led
                blue: 50%
                red: 50%
                green: 50%
                effect: "fast_pulse"

DEV board:
https://www.amazon.com/gp/product/B09GK74F7N/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1
Using the INMP441 for the mic
Max98357 for the amp
Led's:
https://www.amazon.com/gp/product/B09P8MH56K/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&th=1
Speaker assembly:
https://www.walmart.com/ip/onn-Small-Rugged-Speaker-with-Bluetooth-Wireless-Technology-Blue/883044562?athbdg=L1100&from=/search

The 3 I have built are running well and reliably. They dont like too much background noise, but some tweeking may help that. I have an automation that will mute my TV on wake word detection to help.
Im also running Home Assistant on a bare metal machine with an I7 and 16gb RAM

Has anyone managed the fix the crackling noise? As soon as i switch the wakeword option on. the speaker starts to make this crackling noise. changing the bitrate didn´t help. i tried another esp32 board/mic/amp, but the problem stays the same.

Change the dout pin on the speaker. I have mine on GPIO12.

i2s_audio:
  - id: i2s_in
    i2s_lrclk_pin: GPIO25
    i2s_bclk_pin: GPIO26
  - id: i2s_out
    i2s_lrclk_pin: GPIO32
    i2s_bclk_pin: GPIO13

microphone:
  platform: i2s_audio 
  id: external_microphone 
  adc_type: external 
  i2s_audio_id: i2s_in
  i2s_din_pin: GPIO34
  pdm: false
  bits_per_sample: 32bit


speaker:
  platform: i2s_audio 
  id: external_speaker 
  dac_type: external
  i2s_audio_id: i2s_out
  i2s_dout_pin: GPIO12
  mode: mono 

Thank you that did the trick and also thank you for the post after that (-: !!!

@rich33584
That config seems to be working for me. Im still hitting some issues with TTS getting cut short or the wake work getting picked up by STT. But all in all its actually working better.

Heres a wire mapping for anyone who is going to try it out:
Mapping:

ESP32 (WROOM-32)	MAX98357A (Speaker)	I2S Microphone
GPIO33	DIN	-
GPIO12	LRCLK	-
GPIO13	BCLK	-
GPIO34	-	SD
GPIO25	-	WS
GPIO26	-	SCK
3.3V	VDD	VDD
GND	GND	GND

@rich33584 That config seems to be working for me. Im still hitting some issues with TTS getting cut short or the wake work getting picked up by STT. But all in all its actually working better.

I seem to have spells of hours that it works perfectly, and then hours where the TTS is broken and crappy.
Not sure if its a wifi issue or if the ESP32 is just barely adequate to run these. I ordered som "Better" esp32 modules. Ill report back on them.

Have you seen this?
https://beta.esphome.io/components/micro_wake_word.html

Has anyone luck with an ESP32-S3? The device seems to be more capable to manage the workload

In case someone needs a working config without crackling speakers in correct formating.

esphome:
  name: ha-mic-speaker01
  friendly_name: ha-mic-speaker01

esp32:
  board: esp32dev
  framework:
    type: esp-idf

# Enable logging
logger:

web_server:

# Enable Home Assistant API
api:
  encryption:
    key: "paste_your_key_here"

ota:
  password: "paste_your_key_here"

wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password

  # Enable fallback hotspot (captive portal) in case wifi connection fails
  ap:
    ssid: "Ha-Mic-Speaker01"
    password: "paste_your_key_here"

captive_portal:

i2s_audio:
  - id: i2s_in
    i2s_lrclk_pin: GPIO26   #WS / LRC
    i2s_bclk_pin: GPIO25    #SCK /BCLK

microphone:
  - platform: i2s_audio
    adc_type: external
    pdm: false
    id: mic_i2s
    channel: right
    bits_per_sample: 32bit
    i2s_audio_id: i2s_in
    i2s_din_pin: GPIO14    #SD

speaker:
  - platform: i2s_audio
    id: my_speaker
    dac_type: external
    i2s_dout_pin: GPIO12   #DIN 
    mode: mono
    i2s_audio_id: i2s_in


voice_assistant:
  microphone: mic_i2s
  id: va
  noise_suppression_level: 2
  auto_gain: 31dBFS
  volume_multiplier: 4.0
  use_wake_word: false
  speaker: my_speaker
  
  on_error: 
   - if:
        condition:
          switch.is_on: use_wake_word
        then:
          - switch.turn_off: use_wake_word
          - switch.turn_on: use_wake_word      

  on_client_connected:
    - if:
        condition:
          switch.is_on: use_wake_word
        then:
          - voice_assistant.start_continuous:

  on_client_disconnected:
    - if:
        condition:
          switch.is_on: use_wake_word
        then:
          - voice_assistant.stop:
  

binary_sensor:
  - platform: status
    name: API Connection
    id: api_connection
    filters:
      - delayed_on: 1s
    on_press:
      - if:
          condition:
            switch.is_on: use_wake_word
          then:
            - voice_assistant.start_continuous:
    on_release:
      - if:
          condition:
            switch.is_on: use_wake_word
          then:
            - voice_assistant.stop:


switch:
  - platform: template
    name: Use wake word
    id: use_wake_word
    optimistic: true
    restore_mode: RESTORE_DEFAULT_ON
    entity_category: config
    on_turn_on:
      - lambda: id(va).set_use_wake_word(true);
      - if:
          condition:
            not:
              - voice_assistant.is_running
          then:
            - voice_assistant.start_continuous
    
    on_turn_off:
      - voice_assistant.stop
      - lambda: id(va).set_use_wake_word(false);

PS D:\Projects\LocalVoiceAssistant> esphome run voiceAssistantESP32S3.yaml
INFO ESPHome 2024.2.2
INFO Reading configuration voiceAssistantESP32S3.yaml...
INFO Updating https://github.com/esphome/esphome.git@pull/5230/head
Failed config

media_player.i2s_audio: [source voiceAssistantESP32S3.yaml:74]

This feature is only available with frameworks ['arduino'].
platform: i2s_audio
name: esp_speaker
id: media_player_speaker
dac_type: external
i2s_audio_id: i2s_out
i2s_dout_pin: GPIO16
mode: mono

Any ideas why I might be getting this error?

INFO Resolving IP address of esp32-mic-speaker.local
ERROR Error resolving IP address of esp32-mic-speaker.local. Is it connected to WiFi?
ERROR (If this error persists, please set a static IP address: https://esphome.io/components/wifi.html#manual-ips)
ERROR Error resolving IP address: Error resolving address with mDNS: Did not respond. Maybe the device is offline., [Errno -5] No address associated with hostname

I keep getting this error what do i do?

my setup has a screeching sound instead of a crackle when playing back a response. using the setup posted above but using different gpio pins.

Any ideas?

I have discovered, that many of the problem mentioned above is due to interference noise. I had a lot of crackling noise with 10 cm wires on my test setup. So I had to go study on the net.

I2S is ment to be used between components on a PCB. It is without error protocol, so any errors will result in some kind of static noise. The solution is to keep the I2S connection as short as possible. There is no room for the pins on the ESP32 in my box. So I cut those off. Though I left the plastic part of the pin-row. I clammed the MAX98357A board on the backside of the ESP32 PCB, so I only needed 5 mm of wire. I placed the INMP441 on the side-edge of the ESP32 so they form a T (because that works with the box i use). And now it works without any noise.

I don't know how long the wires can be without shielding. But if you need to have even longer wires, they must be individually shielded (only the I2S wires). Shields should be connected to ground on the ESP32 (so only connected in one end). I have no idea how long they then can be. But not especially long. Maybe 20-30 cm?

/Djelle

PS D:\Projects\LocalVoiceAssistant> esphome run voiceAssistantESP32S3.yaml INFO ESPHome 2024.2.2 INFO Reading configuration voiceAssistantESP32S3.yaml... INFO Updating https://github.com/esphome/esphome.git@pull/5230/head Failed config

media_player.i2s_audio: [source voiceAssistantESP32S3.yaml:74]

This feature is only available with frameworks ['arduino']. platform: i2s_audio name: esp_speaker id: media_player_speaker dac_type: external i2s_audio_id: i2s_out i2s_dout_pin: GPIO16 mode: mono

Any ideas why I might be getting this error?

As the error message tells, the media_player is available in the arduino framework only.

esp32:
board: esp32dev # board type
framework:
type: arduino

The sound is interrupted when playing through the speaker

here is my code

i2s_audio:
  - id: i2s_in
    i2s_lrclk_pin: GPIO26
    i2s_bclk_pin: GPIO25

media_player:
  - platform: i2s_audio
    name: "Informer"
    id: media_player_speaker
    i2s_audio_id: i2s_in
    dac_type: external
    i2s_dout_pin: GPIO27
    mode: mono
    on_pause:
      - media_player.stop

here is my log

13:32:01	[W]	[component:232]	
Component i2s_audio.media_player took a long time for an operation (167 ms).
13:32:01	[W]	[component:233]	
Components should block for at most 30 ms.
13:32:01	[W]	[component:233]	
Components should block for at most 30 ms.

please help!