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The tutorial http://download.oracle.com/javase/tutorial/sound/capturing.html does not cover how to select microphone.
I am enumerating mixers with the following code
System.out.println("Searching for microphones");
for(Mixer.Info mixerinfo : AudioSystem.getMixerInfo()) {
mixer = AudioSystem.getMixer(mixerinfo);
//System.out.println(mixerinfo.toString());
if( mixer.isLineSupported(Port.Info.MICROPHONE) ) {
mixers.add(mixer);
System.out.println(Integer.toString(mixers.size()) + ": " + mixerinfo.toString());
}
}
i.e. by presense of microphone input. But next, having a mixer, I can't get line to read.
If I use mixer.getTargetLineInfo(), I receive an array of one Info, which when passing to mixer.getLine returns an object of type com.sun.media.sound.PortMixer$PortMixerPort, which is not ducumented.
If I use mixer.getTargetLines() I get an empty array.
If I create my own DataLine.Info and pass it to the mixer's getLine, I get unsupported exception.
So, what to do?
773
try { line = (TargetDataLine) AudioSystem. getLine(info); line. open(format); } catch (LineUnavailableException ex) { // Handle the error ... } } }
Obtain a TargetDataLine object which represents an input data line from which audio data can be captured, using the method getLineInfo(DataLine.Info) of the AudioSystem class. Open and start the target data line to begin capturing audio data. Create an AudioInputStream object to read data from the target data line.
"The Java Sound API is a low-level API for effecting and controlling input. and output of audio media. It provides explicit control over the capabilities. commonly required for audio input and output in a framework that promotes. extensibility and flexibility."
Acoustic analog recording is achieved by a microphone diaphragm that senses changes in atmospheric pressure caused by acoustic sound waves and records them as a mechanical representation of the sound waves on a medium such as a phonograph record (in which a stylus cuts grooves on a record).
Provide a visual rendering of each sound line, in a component along the lines of the AudioPlotPanel or a simpler RMS volume. It should not take the user too long to figure which sound line they are yodeling through. ;)
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