wav格式音频剪切功能的完美实现方案。
import java.io.*;
import javax.sound.sampled.*;
public class AudioFileProcessor {
/**
*
* @param sourceFileName 源文件路径
* @param destinationFileName 生成文件路径
* @param start 切割开始时间（毫秒）
* @param end 切割结束时间（毫秒）
*/
public static void CutAudio(String sourceFileName, String destinationFileName, int start, int end) {
AudioInputStream inputStream = null;
AudioInputStream shortenedStream = null;
try {
File file = new File(sourceFileName);
//获取指定的音频文件格式 File
AudioFileFormat fileFormat = AudioSystem.getAudioFileFormat(file);
//获取包含在音频文件中的音频数据的格式
AudioFormat format = fileFormat.getFormat();
//从提供的输入流中获取音频输入流
inputStream = AudioSystem.getAudioInputStream(file);
float bytesPerSecond = format.getFrameSize() * format.getFrameRate()/1000;
//跳过并丢弃该音频输入流中指定数量的字节。
inputStream.skip((long)(start * bytesPerSecond));
long framesOfAudioToCopy =(long)( (end-start) * format.getFrameRate()/1000);
shortenedStream = new AudioInputStream(inputStream, format, framesOfAudioToCopy);
File destinationFile = new File(destinationFileName);
AudioSystem.write(shortenedStream, fileFormat.getType(), destinationFile);
} catch (Exception e) {
System.out.println(e);
} finally {
if (inputStream != null) {
try {
inputStream.close();
} catch (Exception e) {
System.out.println(e);
}
}
if (shortenedStream != null)
{
try {
shortenedStream.close();
} catch (Exception e) {
System.out.println(e);
}
}
}
}
}