Speaker volume in Flash AS3

Is there any way by which I can change the volume of the Speaker?

When I use Microphone class, I can set the mic.gain to set the gain in the microphone, likewise can I change the volume of the speaker?

I have seen开发者_JS百科, some websites allow you to change the decibel gain of the speaker in Flash. Can anyone help me understand this?

Thank You.

To change global sound values:

For AS2 change the sound volume of the _root:

var volumeChangeSound:Sound = new Sound(_root);
volumeChangeSound.setVolume(0); // goes from 0 to 100

For AS3:

import flash.media.SoundMixer;
var transform1:SoundTransform=new SoundTransform();
transform1.volume=0; // goes from 0 to 1
flash.media.SoundMixer.soundTransform=transform1;

Sounds in as3: Tutorial: AS3 Basics – How to use library sounds in AS3 | 8bitrocket