SampledSoundRecorder.java 文件源码

@Override
 public String setUp() {
   String   result;

   result = super.setUp();

   if (result == null) {
     m_AudioFormat = new AudioFormat(
AudioFormat.Encoding.PCM_SIGNED,
m_Frequency, 16, 2, 4, m_Frequency, false);
     m_DataLineInfo = new DataLine.Info(TargetDataLine.class, m_AudioFormat);
     try {
m_TargetDataLine = (TargetDataLine) AudioSystem.getLine(m_DataLineInfo);
m_TargetDataLine.open(m_AudioFormat);
     }
     catch (Exception e) {
return "Unable to get recording line: " + Utils.throwableToString(e);
     }
     m_AudioInputStream = new AudioInputStream(m_TargetDataLine);
   }

   return result;
 }