下面的代码向您展示如何复制音频流的一部分，从一个文件读取并写入另一个文件。
import java.io.*;import javax.sound.sampled.*;class AudioFileProcessor { public static void main(String[] args) { copyAudio("/tmp/uke.wav", "/tmp/uke-shortened.wav", 2, 1); } public static void copyAudio(String sourceFileName, String destinationFileName, int startSecond, int secondsToCopy) { AudioInputStream inputStream = null; AudioInputStream shortenedStream = null; try { File file = new File(sourceFileName); AudioFileFormat fileFormat = AudioSystem.getAudioFileFormat(file); AudioFormat format = fileFormat.getFormat(); inputStream = AudioSystem.getAudioInputStream(file); int bytesPerSecond = format.getframeSize() * (int)format.getframeRate(); inputStream.skip(startSecond * bytesPerSecond); long framesOfAudioToCopy = secondsToCopy * (int)format.getframeRate(); shortenedStream = new AudioInputStream(inputStream, format, framesOfAudioToCopy); File destinationFile = new File(destinationFileName); AudioSystem.write(shortenedStream, fileFormat.getType(), destinationFile); } catch (Exception e) { println(e); } finally { if (inputStream != null) try { inputStream.close(); } catch (Exception e) { println(e); } if (shortenedStream != null) try { shortenedStream.close(); } catch (Exception e) { println(e); } } } public static void println(Object o) { System.out.println(o); } public static void print(Object o) { System.out.print(o); }}
