[Audio processing] wav音频文件合并

Posted 2020-06-23 小尾巴君

package com.audioprocessingbox.myfunc;

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

import javax.sound.sampled.UnsupportedAudioFileException;

import com.audioprocessingbox.utils.WavFile;
import com.audioprocessingbox.utils.WavFileException;


public class AppCombFiles {
    private static final long sampleRate = 16000;


    public static void main(String[] arg) throws UnsupportedAudioFileException {
        try {
            int[] postbuffer = new int[0], newbuffer = new int[0], buffer;    
            WavFile wavFile;
            for(int i = 103; i < 111; i++) {
                wavFile = WavFile.openWavFile(new File("/Users/karl/Work/database/speaker/certainSpeaker/" + i + ".wav"));
                if(sampleRate != wavFile.getSampleRate()) {
                    throw new IllegalArgumentException("The sample rate for this file is different than Recognito‘s " +
                            "defined sample rate : [" + wavFile.getSampleRate() + "]");
                }
                //Read wav data into int array
                int nframes = (int) wavFile.getNumFrames();
                buffer = new int[nframes];
                wavFile.readFrames(buffer, nframes);
                wavFile.close();
                //Combine two int array
                newbuffer = new int[postbuffer.length + buffer.length];
                System.arraycopy(postbuffer, 0, newbuffer, 0, postbuffer.length);
                System.arraycopy(buffer, 0, newbuffer, postbuffer.length, buffer.length);
                postbuffer = new int[postbuffer.length + buffer.length];
                postbuffer = newbuffer;
            }
            WavFile saveFile = WavFile.newWavFile(new File("/Users/karl/Work/javawork/combine.wav"), 1, postbuffer.length, 16, sampleRate);
            saveFile.writeFrames(postbuffer, postbuffer.length);
            saveFile.close();
            System.out.println(postbuffer.length / sampleRate);
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (WavFileException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
}