MACROMEDIA FLEX-FLEX ACTIONSCRIPT LANGUAGE Reference page 551

Actionscript language reference
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Example
The following example enables the user to control the amount of time between when the
microphone stops detecting sound and when
user controls this value using a NumericStepper instance called
ProgressBar instance called
audio stream is considered silent. Otherwise, it displays the activity level of the audio stream.
var silenceLevel_pb:mx.controls.ProgressBar;
var silenceTimeOut_nstep:mx.controls.NumericStepper;
this.createEmptyMovieClip("sound_mc", this.getNextHighestDepth());
var active_mic:Microphone = Microphone.get();
sound_mc.attachAudio(active_mic);
silenceLevel_pb.label = "Activity level: %3";
silenceLevel_pb.mode = "manual";
silenceTimeOut_nstep.minimum = 0;
silenceTimeOut_nstep.maximum = 10;
silenceTimeOut_nstep.value = active_mic.silenceTimeOut/1000;
var nstepListener:Object = new Object();
nstepListener.change = function(evt:Object) {
active_mic.setSilenceLevel(active_mic.silenceLevel, evt.target.value*1000);
};
silenceTimeOut_nstep.addEventListener("change", nstepListener);
this.onEnterFrame = function() {
silenceLevel_pb.setProgress(active_mic.activityLevel, 100);
};
active_mic.onActivity = function(active:Boolean) {
if (active) {
silenceLevel_pb.indeterminate = false;
silenceLevel_pb.setStyle("themeColor", "haloGreen");
silenceLevel_pb.label = "Activity level: %3";
} else {
silenceLevel_pb.indeterminate = true;
silenceLevel_pb.setStyle("themeColor", "0xFF0000");
silenceLevel_pb.label = "Activity level: (inactive)";
}
};
See also
Microphone.setSilenceLevel()
Microphone.useEchoSuppression
Availability
Flash Player 6.
Usage
active_mic.useEchoSuppression:Boolean
Microphone.onActivity(false)
modifies its appearance depending on whether the
silenceLevel_pb
silenceTimeOut_nstep
Microphone.useEchoSuppression
is invoked. The
. The
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