User Guide

472 Chapter 2: ActionScript Language Reference

Microphone.useEchoSuppression

Availability

Flash Player 6.

Usage

active_mic.useEchoSuppression:Boolean

Description

Property (read-only); a Boolean value of true if echo suppression is enabled, false otherwise.

The default value is

false unless the user has selected Reduce Echo in the Flash Player

Microphone Settings panel.

Example

The following example turns on echo suppression if the user selects a CheckBox instance called

useEchoSuppression_ch. The ProgressBar instance called activityLevel_pb displays the

current activity level of the audio stream.

var useEchoSuppression_ch:mx.controls.CheckBox;

var activityLevel_pb:mx.controls.ProgressBar;

this.createEmptyMovieClip("sound_mc", this.getNextHighestDepth());

var active_mic:Microphone = Microphone.get();

sound_mc.attachAudio(active_mic);

activityLevel_pb.mode = "manual";

activityLevel_pb.label = "Activity Level: %3";

useEchoSuppression_ch.selected = active_mic.useEchoSuppression;

this.onEnterFrame = function() {

activityLevel_pb.setProgress(active_mic.activityLevel, 100);

};

var chListener:Object = new Object();

chListener.click = function(evt:Object) {

active_mic.setUseEchoSuppression(evt.target.selected);

};

useEchoSuppression_ch.addEventListener("click", chListener);