Energy VAD

无外部依赖的简单基于能量的语音活动检测器（VAD）。

能量阈值从初始音频中校准，或可手动设置。

安装

pip install energy-vad

示例

import wave
from energy_vad import EnergyVad

vad = EnergyVad()

with wave.open("test.wav", "rb") as wav_file:
    assert wav_file.getframerate() == 16000
    assert wav_file.getsampwidth() == 2
    assert wav_file.getnchannels() == 1
    
    chunk = wav_file.readframes(vad.samples_per_chunk)
    while len(chunk) == vad.bytes_per_chunk:
        result = vad.process_chunk(chunk)
        if result is None:
            # calibrating
            pass
        elif result:
            # speech
            print("!", end="")
        else:
            # silence
            print(".", end="")

        chunk = wav_file.readframes(vad.samples_per_chunk)
        
print("")
print("Energy threshold:", vad.threshold)

# Clear calibrated threshold
vad.reset_calibration()