如何在Java中获得声音文件的总时间？

如何在Java中获得声音文件的总时间？

–update

看起来这段代码可以正常工作：long audioFileLength = audioFile.length（）;

recordedTimeInSec = audioFileLength / (frameSize * frameRate); 

我知道如何获取文件长度，但我没有找到如何获得声音文件的帧速率和帧大小…任何想法或链接？

– 更新

一个工作代码（使用@ mdma的提示）：

  AudioInputStream audioInputStream = AudioSystem.getAudioInputStream(file); AudioFormat format = audioInputStream.getFormat(); long audioFileLength = file.length(); int frameSize = format.getFrameSize(); float frameRate = format.getFrameRate(); float durationInSeconds = (audioFileLength / (frameSize * frameRate)); 

Answer 1

给定一个File你可以写

 File file = ...; AudioInputStream audioInputStream = AudioSystem.getAudioInputStream(file); AudioFormat format = audioInputStream.getFormat(); long frames = audioInputStream.getFrameLength(); double durationInSeconds = (frames+0.0) / format.getFrameRate(); 

Answer 2

这是一种简单的方法：

 FileInputStream fileInputStream = null; long duration = 0; try { fileInputStream = new FileInputStream(pathToFile); } catch (FileNotFoundException e) { e.printStackTrace(); } try { duration = Objects.requireNonNull(fileInputStream).getChannel().size() / 128; } catch (IOException e) { e.printStackTrace(); } System.out.println(duration)