如何在 Java 中获取声音文件的总时间？
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How do I get a sound file's total time in Java?
提问by Tom Brito
How do I get a sound file's total time in Java?
如何在 Java 中获取声音文件的总时间？
--UPDATE
- 更新
Looks like this code does de work: long audioFileLength = audioFile.length();
看起来这段代码确实有效： long audioFileLength = audioFile.length();
recordedTimeInSec = audioFileLength / (frameSize * frameRate);
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?
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？
-- UPDATE
- 更新
One more working code (using @mdma's hints):
另一个工作代码（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));
采纳答案by mdma
Given a Fileyou can write
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();
回答by Milo Banks
This is a easy way:
这是一个简单的方法：
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)
