如何在 Java 中获取声音文件的总时间? [英] How do I get a sound file's total time in Java?

问题描述

如何在 Java 中获取声音文件的总时间?

How do I get a sound file's total time in Java?

--更新

看起来这段代码确实有效:long audioFileLength = audioFile.length();

Looks like this code does de work: 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取声音文件的帧速率和帧大小...任何想法或链接?

I know how to get the file length, but I'm not finding how to get the sound file's frame rate and frame size... Any idea or link?

-- 更新

另外一个工作代码(使用@mdma 的提示):

One more working code (using @mdma's hints):

    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));

推荐答案

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();  

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