如何划分的音频文件（MP3或WAV）成无声段较小的 [英] how to divide an audio file (mp3 or wav) into smaller ones at silent segments

问题描述

我有MP3和WAV音频文件。我想将它们分成较小的文件以编程方式。

I have mp3 and wav audio files. I want to divide them into smaller files programmatically.

有没有简单易用的Java库，我可以用它来处理音频文件，寻求无声段，并在无声段某处分割文件？

Is there any easy-to-use Java library I can use to process the audio file, seek the silent segments, and divide the file somewhere in a silent segment?

推荐答案

本页面： HTTP ：//www.labbookpages.co.uk/audio/javaWavFiles.html 有WavFile类，你可以用它来读取波形文件（下载链接WavFile.tar.gz在右上角 - WavFile.tar 。广州）。求无声段可以通过经由文件扫描和寻找范围，其中绝对样本值（即忽略符号）的平均比某个阈值低来进行。 MP3文件可能是最容易被转换成先WAV处理，虽然往返段回MP3可能会降低质量。

This page: http://www.labbookpages.co.uk/audio/javaWavFiles.html has WavFile class you can use to read wave files (the download link to WavFile.tar.gz is in the top right corner - WavFile.tar.gz). Seeking the silent segments can be done by scanning through the file and finding ranges where the average of the absolute sample values (i.e. ignoring sign) is lower than a certain threshold. Mp3 files are probably most easily processed by converting to wav first, although round-tripping the segments back to mp3 may degrade quality.

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