User Guide

546 Chapter 7: ActionScript for Flash

Example

The following example sets the microphone rate to the user’s preference (which you have assigned

to the

userRate variable) if it is one of the following values: 5, 8, 11, 22, or 44. If it is not, the

value is rounded to the nearest acceptable value that the sound capture device supports.

active_mic.setRate(userRate);

The following example lets you use a ComboBox instance, called rate_cb, to change the rate at

which your microphone captures sound. The current rate displays in a Label instance called

rate_lbl.

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

var active_mic:Microphone = Microphone.get();

sound_mc.attachAudio(active_mic);

var rate_array:Array = new Array(5, 8, 11, 22, 44);

rate_cb.dataProvider = rate_array;

rate_cb.labelFunction = function(item:Object) {

return (item+" kHz");

};

for (var i = 0; i<rate_array.length; i++) {

if (rate_cb.getItemAt(i) == active_mic.rate) {

rate_cb.selectedIndex = i;

break;

}

function changeRate() {

active_mic.setRate(rate_cb.selectedItem);

rate_lbl.text = "Current rate: "+active_mic.rate+" kHz";

}

rate_cb.addEventListener("change", changeRate);

rate_lbl.text = "Current rate: "+active_mic.rate+" kHz";