Is there any way to set the respective volume of a Clip in Java?

I have this method:

public static void play(Clip clip) {

if (Settings.getSettings().isVolumeOn()) {

FloatControl volume = (FloatControl) clip.getControl(FloatControl.Type.MASTER_GAIN);

volume.setValue(-1 * Settings.getSettings().getVolume());

clip.start();

}

}

The Settings.getSettings().getVolume() returns an Integer in the range of 0 - 100

Volumes:

0 : No Sound

40 : Optimal Sound with headphones

60 : Optimal Sound

100: Full Sound

So essentially this should be like the scale of VLC (but half since VLC is from 0 to 200).

I've found that I can reduce the decibel of the clip by using volume.setValue(-10f);

But I would prefer something of the type volume.setValue(clip.getMaxVolume() * Settings.getSettings().getVolume()/100).

Where clip.getMaxVolume() would return the max volume of the clip.

解决方案

According to Killer Game Programming by Andrew Davison you can adjust volume this simple:

float range = gainControl.getMaximum() - gainControl.getMinimum();

float gain = (range * volume) + gainControl.getMinimum();

gainControl.setValue(gain);

volume being the desired volume in float (0.0f means no sound, 1.0f means full audio)

gainControl is the FloatControl

Hope you can get it to work!