MACROMEDIA FLEX-FLEX ACTIONSCRIPT LANGUAGE Reference page 551

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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