microVAD

Self-contained voice activity detector (VAD) that uses the machine learning architecture from microWakeWord.

Installation

pip install pymicro-vad

Usage

from pymicro_vad import MicroVad

vad = MicroVad()
threshold = 0.5

# Process 10ms chunks of 16-bit mono PCM @16Khz
while audio := get_10ms_of_audio():
    assert len(audio) == 160 * 2  # 160 samples
    speech_prob = vad.Process10ms(audio)
    if speech_prob < 0:
        print("Need more audio")
    elif speech_prob > threshold:
        print("Speech")
    else:
        print("Silence")

Building

Ensure you have python3-dev and build-essential installed.

Run script/setup to create a virtual environment, then script/build to build the extension locally.