マイクがうまくいかない理由

Question

ファイルに書き込むマイクを作成したいが、そのファイルは空です。なぜか分からない。

public void recordSound() throws IOException, LineUnavailableException, InterruptedException { 
    // Assume that the TargetDataLine, line, has already 
    // been obtained and opened. 
    AudioFormat format = new AudioFormat(44100, 16, 2, true, true); 
    TargetDataLine line = AudioSystem.getTargetDataLine(format); 
    ByteArrayOutputStream out = new ByteArrayOutputStream(); 
    int numBytesRead; 
    byte[] data = new byte[line.getBufferSize()/5]; 

    // Begin audio capture. 
    line.start(); 
    // Read the next chunk of data from the TargetDataLine. 
    numBytesRead = line.read(data, 0, data.length); 
    // Save this chunk of data. 
    out.write(data, 0, numBytesRead); 
    out.writeTo(new FileOutputStream("./audio.wav")); 
    Thread.sleep(1000); 
    line.stop(); 
    line.close(); } 

Answer 1

はあなたのFileOutputStreamを閉じ

line.open(line.getFormat()); 
line.start();