I woul like to adjust mixers volume such Master Volume, Wave Volume, Mixer, Microphone.
How can I do it in Java Sound API?
Thanks.

 

 

The audio sytem provides special port mixers with port lines.
You have to open this lines, get the controls and adjust them.

Here is a small program which prints the current values of the controls.
It may help you to learn how to access the controls.

import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.BooleanControl;
import javax.sound.sampled.CompoundControl;
import javax.sound.sampled.Control;
import javax.sound.sampled.EnumControl;
import javax.sound.sampled.FloatControl;
import javax.sound.sampled.Line;
import javax.sound.sampled.LineUnavailableException;
import javax.sound.sampled.Mixer;
import javax.sound.sampled.Port;
 
public class MixerTest {
 
	public MixerTest() throws LineUnavailableException {
		
		Mixer.Info[] mixerInfos = AudioSystem.getMixerInfo();
		for (Mixer.Info mixerInfo:mixerInfos) {
			Mixer m = AudioSystem.getMixer(mixerInfo);
			Line.Info[] lineInfos = m.getSourceLineInfo();
			for (Line.Info li:lineInfos) {
				if (li instanceof Port.Info){
					Port.Info pi=(Port.Info)li;
					Line portLine=m.getLine(pi);
					printPortControls(portLine);
				}
			}
			lineInfos = m.getTargetLineInfo();
			for (Line.Info li:lineInfos) {
				if (li instanceof Port.Info){
					if (li instanceof Port.Info){
						Port.Info pi=(Port.Info)li;
						Line portLine=m.getLine(pi);
						printPortControls(portLine);
					}
				}
			}
		}
	}
	
	private void printPortControls(Line portLine) throws LineUnavailableException{
		portLine.open();
		Control[] pCtrls=portLine.getControls();
		for(Control memberControl:pCtrls){
			printControl(memberControl);
		}
		portLine.close();
	}
 
	public void printControl(Control memberControl) {
		if (memberControl instanceof BooleanControl) {
			BooleanControl bc = (BooleanControl) memberControl;
			System.out.println(bc + ": " + bc.getValue());
		} else if (memberControl instanceof FloatControl) {
			FloatControl fc = (FloatControl) memberControl;
			System.out.println(fc + ": " + fc.getValue());
 
		} else if (memberControl instanceof EnumControl) {
			EnumControl ec = (EnumControl) memberControl;
			System.out.println(ec + ": " + ec.getValue());
		} else if (memberControl instanceof CompoundControl) {
			CompoundControl cc = (CompoundControl) memberControl;
			System.out.println(cc);
			for (Control compControl:cc.getMemberControls()) {
				printControl(compControl);
			}
		}
	}
 
	/**
	 * @param args
	 */
	public static void main(String[] args) {
		try {
			new MixerTest();
		} catch (LineUnavailableException e) {
			e.printStackTrace();
		}
 
	}
}

 

 

How can I change volume for RECORDING mixer?

Thanks in advance,
Pas.

 

 

JavaSound uses the terms SourceLine for playback lines and TargetLine for recording lines. Controls of target lines are responsible for recording.
The structure of Port lines and controls is similar to the structure of the OS audio mixer, because it depends on the audio hardware.

 

 

Hey, thank you, KlausJJ... I don't now TargetLine defines recording lines.

Bye,
dkmorb.

 

 

Hi friends,

I m trying to do voice recognition by using Java. First i want to get the i/p as voice then convert into text, after that it wil be transferred to another one computer. At there it should be happened vice versa...

Anyone give me a source code for this..........


Thanx in advance..............

 

 

Hello all,

I am very appriciate to see the Code but i can't understand from this code can U explain about this Briefly ..