獲取wav格式音頻時長。

Maven依賴

      <dependency>
          <groupId>org</groupId>
          <artifactId>jaudiotagger</artifactId>
          <version>2.0.1</version>
      </dependency>

工具類

import org.jaudiotagger.audio.wav.util.WavInfoReader;

import java.io.File;
import java.io.IOException;
import java.io.RandomAccessFile;

/** @Author huyi @Date 2021/9/30 14:46 @Description: 音頻工具類 */
public class AudioWavUtils {

public static void getWavInfo(String filePath) throws Exception {
  File file = new File(filePath);
  WavInfoReader wavInfoReader = new WavInfoReader();
  RandomAccessFile raf = new RandomAccessFile(file, "r");
  // wav音頻時長
  long duration = (long) (wavInfoReader.read(raf).getPreciseLength() * 1000);
  // wav音頻采樣率
  int sampleRate = toInt(read(raf, 24, 4));
  System.out.println("duration -> " + duration + ",sampleRate -> " + sampleRate);
  raf.close();
}

public static int toInt(byte[] b) {
  return ((b[3] << 24) + (b[2] << 16) + (b[1] << 8) + (b[0]));
}

public static byte[] read(RandomAccessFile rdf, int pos, int length) throws IOException {
  rdf.seek(pos);
  byte[] result = new byte[length];
  for (int i = 0; i < length; i++) {
    result[i] = rdf.readByte();
  }
  return result;
}

public static void main(String[] args) throws Exception {
  getWavInfo("E:\\csdn\\dzgz.wav");
}
}

輸出結果：

duration為音頻時長，單位毫秒，sampleRate為采樣率。

說明

該工具類只能處理單聲道音頻，雙聲道會報錯，多聲道屬于立體聲范疇，提醒一下。

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原文鏈接：https://huyi-aliang.blog.csdn.net/article/details/120566710