如何在Wav文件中跟踪无声区？

import wave

def detect_silence(wav_file, threshold=100, min_silence_duration=0.5):
    with wave.open(wav_file, 'r') as wf:
        sample_rate = wf.getframerate()
        chunk_duration = 0.1  # 每次处理0.1秒的音频数据
        chunk_size = int(sample_rate * chunk_duration)
        silence_start = None
        silence_end = None
        for chunk_start in range(0, wf.getnframes(), chunk_size):
            chunk_frames = wf.readframes(chunk_size)
            energy = sum(abs(frame) for frame in chunk_frames) / chunk_size
            if energy< threshold:
                if silence_start is None:
                    silence_start = chunk_start / sample_rate
                silence_end = (chunk_start + chunk_size) / sample_rate
            else:
                if silence_start is not None and silence_end - silence_start >= min_silence_duration:
                    yield silence_start, silence_end
                silence_start = None
                silence_end = None
        if silence_start is not None and silence_end - silence_start >= min_silence_duration:
            yield silence_start, silence_end

wav_file = 'example.wav'
for silence_start, silence_end in detect_silence(wav_file):
    print(f'Silence from {silence_start}s to {silence_end}s')