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);

I resolved this (thanks to another community member) by pulling the speaker pin low on boot using a simple output, haven't heard the crackle since.

Can I ask how? I find this helps but doesn't eliminate it...

esphome:
  name: ${device_name}
  friendly_name: ${friendly_name}
  on_boot:
    - priority: -100
      then:
        - output.turn_off: speaker_pin #suppress crackling during boot

speaker:
  - platform: i2s_audio
    id: spk
    dac_type: external
    i2s_dout_pin:
      number: ${din}
      allow_other_uses: true
    i2s_audio_id: i2s
    mode: mono

output:
  - platform: gpio
    pin: 
      number: ${din}
      allow_other_uses: true
    id: speaker_pin

Thanks!

Edit: I find I get crackling and static until the device gets to DETECTING_WAKE_WORD state.

Edit2: I actually found separating out lrclk and bclk resolved it for me.

i2s_audio:
  - id: i2s_in
    i2s_lrclk_pin: ${lrclk_mic}
    i2s_bclk_pin: ${bclk_mic}
  - id: i2s_out
    i2s_lrclk_pin: ${lrclk_amp}
    i2s_bclk_pin: ${bclk_amp}

I'm getting an error when installing the .yaml onto the ESP32 I have. I've pared it down to just the minimums to try and isolate the issue.
When I do a basic, bare-bones install of the ESP-WROOM-32 into Home Assistant using ESPHome, it works fine. I can see the wifi connecting on boot. But with the bare-bones .yaml, that's all it does.
Then I started adding some of the .yaml above in. I first tried changing the framework from Arduino to esp-idf by adding only this section:
esp32:
board: esp32dev
framework:
type: esp-idf
version: recommended
and trying to install. But I get this error that my sub-novice brain doesn't know how to troubleshoot:
INFO ESPHome 2024.11.1
INFO Reading configuration /config/esphome/voice-assistant.yaml...
INFO Generating C++ source...
INFO Compiling app...
Processing voice-assistant (board: esp32dev; framework: espidf; platform: platformio/espressif32@5.4.0)

HARDWARE: ESP32 240MHz, 320KB RAM, 4MB Flash

• framework-espidf @ 3.40408.0 (4.4.8)
• tool-cmake @ 3.16.9
• tool-ninja @ 1.10.2
• toolchain-esp32ulp @ 2.35.0-20220830
• toolchain-xtensa-esp32 @ 8.4.0+2021r2-patch5
  Reading CMake configuration...
  -- Component directory /data/cache/platformio/packages/framework-espidf/components/expat does not contain a CMakeLists.txt file. No component will be added
  -- Building ESP-IDF components for target esp32
  -- Configuring incomplete, errors occurred!
  See also "/data/build/voice-assistant/.pioenvs/voice-assistant/CMakeFiles/CMakeOutput.log".

fatal: not a git repository (or any parent up to mount point /)
Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set).
CMake Error at /data/cache/platformio/packages/framework-espidf/tools/cmake/build.cmake:201 (message):
Failed to resolve component 'freertos'.
Call Stack (most recent call first):
/data/cache/platformio/packages/framework-espidf/tools/cmake/build.cmake:236 (__build_resolve_and_add_req)
/data/cache/platformio/packages/framework-espidf/tools/cmake/build.cmake:237 (__build_expand_requirements)
/data/cache/platformio/packages/framework-espidf/tools/cmake/build.cmake:518 (__build_expand_requirements)
/data/cache/platformio/packages/framework-espidf/tools/cmake/project.cmake:476 (idf_build_process)
CMakeLists.txt:3 (project)
========================= [FAILED] Took 12.33 seconds =========================