感谢老师您的回答,我这边重新更新了scipy.io.wavfile的版本,发现再次读入会报错,报错信息:ValueError: WAV header is invalid: nAvgBytesPerSec must equal product of nSamplesPerSec and nBlockAlign, but file has nSamplesPerSec = 8000, nBlockAlign = 4, and nAvgBytesPerSec = 16000
因为github上也有相关问题(https://github.com/scipy/scipy/issues/13988),估计是wav头的格式问题导致,所以我换用了soundfile读取之后文件长度就没有损失了,谢谢老师!