static void captureAudioFromLine(DataLine line, AudioFormat format) ctex {
  if (!line instanceof TargetDataLine)
    fail(getClassName(line));
  TargetDataLine tdl = cast line;
  tdl.open(format);
  tdl.start();
  int total = 0, n;
  int seconds = 2;
  int bytesPerSecond = iround(format.getSampleSizeInBits()*format.getChannels()*format.getSampleRate()/8);
  print("Bytes per second: " + bytesPerSecond);
  int bytesWanted = seconds*bytesPerSecond;
  byte[] buf = new byte[1024];
  while (total < bytesWanted && (n = tdl.read(buf, 0, min(l(buf), bytesWanted-total))) > 0) {
    total += n;
    short[] exp = format.isBigEndian()
      ? shortArrayFromBytes(buf, 0, n)
      : shortArrayFromBytes_littleEndian(buf, 0, n);
    print(structure(subArray(exp, 0, 10)));
    print("Bytes read from line: " + total + ". min: " + min(exp) + ". max: " + max(exp));
  }
  tdl.close();
}