# microVAD
Self-contained voice activity detector (VAD) that uses the machine learning architecture from [microWakeWord](https://github.com/kahrendt/microWakeWord/).
## Installation
``` sh
pip install pymicro-vad
```
## Usage
``` python
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(): # you define this
assert len(audio) == 160 * 2 # 160 samples
speech_prob = vad.process_10ms(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.
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