speech_visualization.py

%matplotlib qt

import pyaudio
import numpy as np
import matplotlib.pyplot as plt
from queue import Queue
import threading
import time
from IPython.display import display, clear_output

FORMAT = pyaudio.paInt16
CHANNELS = 1
RATE = 44100
CHUNK = 1024

audio_queue = Queue()

def flush_queue():
    while not audio_queue.empty():
        audio_queue.get()

def audio_stream():
    def audio_callback(in_data, frame_count, time_info, status):
        audio_queue.put(np.frombuffer(in_data, dtype=np.int16))
        return (in_data, pyaudio.paContinue)

    audio = pyaudio.PyAudio()

    stream = audio.open(format=FORMAT, channels=CHANNELS,
                        rate=RATE, input=True,
                        frames_per_buffer=CHUNK,
                        input_device_index=AUDIO_DEVICE,
                        stream_callback=audio_callback)

    stream.start_stream()

    while stream.is_active():
        time.sleep(0.1)

    stream.stop_stream()
    stream.close()
    audio.terminate()

# Start audio stream in a separate thread
thread = threading.Thread(target=audio_stream)
thread.daemon = True
thread.start()

# Initialize Matplotlib plot
fig, ax = plt.subplots()
x = np.arange(0, 2 * CHUNK, 2)
line, = ax.plot(x, np.zeros(CHUNK))
ax.set_ylim(-16000, 16000)
ax.set_xlim(0, CHUNK)
ax.axis('off')

def update_plot():
    try:
        while True:
            if not audio_queue.empty():
                data = audio_queue.get()
                flush_queue()
                line.set_ydata(data)
                ax.relim()  # Recompute the ax.dataLim
                ax.autoscale_view()  # Update axes limits
                fig.canvas.draw()  # Redraw the figure
                fig.canvas.flush_events()  # Process GUI events
            time.sleep(0.1)
    except KeyboardInterrupt:
        pass

update_plot()

AUDIO_DEVICE is not defined. Am I missing a library?

Edit: Added this

for i in range(0, numdevices):
  if (audio.get_device_info_by_host_api_device_index(0, i).get('maxInputChannels')) > 0:
    print("Input Device id ", i, " - ", audio.get_device_info_by_host_api_device_index(0, i).get('name'))

AUDIO_DEVICE = 0

Still not able to get it working. Python isn't my strong suit