轉換Mp3為Wav

ConvertMp3toWav

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.StandardOpenOption;

import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioFileFormat;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.UnsupportedAudioFileException;

import edu.cmu.sphinx.api.Configuration;
import edu.cmu.sphinx.api.SpeechResult;
import edu.cmu.sphinx.api.StreamSpeechRecognizer;
public class Main {
        /*
        <dependency>
            <groupId>com.googlecode.soundlibs</groupId>
            <artifactId>mp3spi</artifactId>
            <version>1.9.5.4</version>
        </dependency>
        <dependency>
            <groupId>com.googlecode.soundlibs</groupId>
            <artifactId>jlayer</artifactId>
            <version>1.0.1.4</version>
            <exclusions>
                <exclusion>
                    <groupId>junit</groupId>
                    <artifactId>junit</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
    */
    public static Path converMp3toWav(InputStream is, Path ouput) throws UnsupportedAudioFileException, IllegalArgumentException, Exception {
        try (AudioInputStream sourceAIS = AudioSystem.getAudioInputStream(is)) {
            AudioFormat sourceFormat = sourceAIS.getFormat();
            AudioFormat convertFormat = new AudioFormat(AudioFormat.Encoding.PCM_SIGNED, sourceFormat.getSampleRate(), 16, sourceFormat.getChannels(), sourceFormat.getChannels() * 2, sourceFormat.getSampleRate(), false);
            AudioFormat targetFormat = new AudioFormat(44100, 8, 1, true, false);
            try (final AudioInputStream convert1AIS = AudioSystem.getAudioInputStream(convertFormat, sourceAIS);
                    final AudioInputStream convert2AIS = AudioSystem.getAudioInputStream(targetFormat, convert1AIS);
                    ByteArrayOutputStream baos = new ByteArrayOutputStream()) {
                byte[] buffer = new byte[8192];
                while (true) {
                    int readCount = convert2AIS.read(buffer, 0, buffer.length);
                    if (readCount == -1) {
                        break;
                    }
                    baos.write(buffer, 0, readCount);
                }
                final byte[] rawResult = baos.toByteArray();
                final AudioInputStream audioInputStream = new AudioInputStream(new ByteArrayInputStream(rawResult),
                        targetFormat, rawResult.length);
                AudioSystem.write(audioInputStream, AudioFileFormat.Type.WAVE, Files.newOutputStream(ouput,StandardOpenOption.CREATE));
                return ouput;
            } finally {
                is.close();
            }
        }
    }
}