说明：仅支持Windows系统下，amr、aud、slk、silk转成mp3。转换之前先下载转换工具，点我下载，提取码：2olq

import java.io.File;
import java.util.ArrayList;
import java.util.List;
/*** 支持在windows系统下，amr、aud、slk、silk转成mp3格式*/
public class AudioConversion {public static void main(String[] args) {String audioType = "amr";//源音频文件类型，amr、aud、slk、silkString source = "E:\\audio\\audio." + audioType;//源音频文件String target = "E:\\audio\\audio.mp3";//目标音频文件String path = "E:\\audio\\";//音频转换工具存放路径File sourceFile = new File(source);if(sourceFile.exists()) {String pcmPath = path + "audio.pcm";processPcm(path, source, pcmPath);//先转成pcm格式File file=new File(pcmPath);if(file.exists()) {processMp3(path, pcmPath, target);//再由pcm转成mp3} else {processFfmpegMp3(path, source, target);//直接转成mp3}} else {System.out.println("源文件不存在");}}// 调用sile_v3_decoder.exe，转成pcm格式private static void processPcm(String path, String source, String pcmPath){List<String> commend = new ArrayList<String>();  commend.add(path+"silk_v3_decoder.exe");   commend.add(source);  commend.add(pcmPath);         try {  ProcessBuilder builder = new ProcessBuilder();  builder.command(commend);  Process p=builder.start();p=Runtime.getRuntime().exec("taskkill -f -t -im silk_v3_decoder.exe");p.waitFor();     } catch (Exception e) {e.printStackTrace();}}// 调用ffmpeg，pcm转mp3 private static void processMp3(String path, String pcmPath, String target) {//ffmpeg -y -f s16le -ar 24000 -ac 1 -i 源文件 目标文件List<String> commend = new ArrayList<String>();  commend.add(path+"ffmpeg.exe");   commend.add("-y");  commend.add("-f");  commend.add("s16le");  commend.add("-ar");  commend.add("24000");  commend.add("-ac");  commend.add("1");  commend.add("-i");  commend.add(pcmPath);  commend.add(target);   try {  ProcessBuilder builder = new ProcessBuilder();  builder.command(commend);Process p=builder.start();p.waitFor();} catch (Exception e) {e.printStackTrace();}}// 调用ffmpeg.exe，转MP3 private static void processFfmpegMp3(String path, String source, String target){List<String> commend = new ArrayList<String>();  commend.add(path+"ffmpeg.exe");  commend.add("-i");  commend.add(source);  commend.add(target);         try {  ProcessBuilder builder = new ProcessBuilder();  builder.command(commend);  Process p=builder.start();p=Runtime.getRuntime().exec("taskkill -f -t -im ffmpeg.exe");p.waitFor();     } catch (Exception e) {  e.printStackTrace();}}
}