MACROMEDIA FLASH COMMUNICATION SERVER MX-SERVER-SIDE COMMUNICATION ACTIONSCRIPT DICTIONARY Specifiche Scaricare il pdf (Pagina 241)

Silence values correspond directly to activity values. Complete silence is an activity value of 0.

Constant loud noise (as loud as can be registered based on the current gain setting) is an activity

value of 100. After gain is appropriately adjusted, your activity value is less than your silence value

when you’re not talking; when you are talking, the activity value exceeds your silence value.

This method is similar in purpose to

Camera.setMotionLevel; both methods are used to specify

when the

onActivity event handler should be invoked. However, these methods have a

significantly different impact on publishing streams:

• Camera.setMotionLevel is designed to detect motion and does not affect bandwidth usage.

Even if a video stream does not detect motion, video is still sent.

• Microphone.setSilenceLevel is designed to optimize bandwidth. When an audio stream

is considered silent, no audio data is sent. Instead, a single message is sent, indicating that

silence has started.

Example

The following example changes the silence level based on the user’s input. The button has the

following code attached:

on (press)

{

this.makeSilenceLevel(this.silenceLevel);

}

The makeSilenceLevel() function called by the button continues:

function makeSilenceLevel(s)

{

this.obj.setSilenceLevel(s);

this.SyncMode();

this.silenceLevel= s;

}

See also the example for Camera.setMotionLevel.

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MACROMEDIA FLASH COMMUNICATION SERVER MX-SERVER-SIDE COMMUNICATION ACTIONSCRIPT DICTIONARY Specifiche Pagina 241