Forked from:: terra1119's Dynamic sound generation test ※音が出ます

forked from: Dynamic sound generation test ※音が出ます

forked:2
favorite:3
lines:101
license : MIT License
modified : 2010-03-07 14:16:50

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// forked from terra1119's Dynamic sound generation test ※音が出ます
package {
	import flash.display.Sprite;
	import flash.events.MouseEvent;
	import flash.events.Event;
	import flash.events.SampleDataEvent;
	import flash.media.Sound;
	import flash.media.SoundChannel;
	import flash.media.SoundTransform;
	import flash.display.DisplayObjectContainer;
	import flash.text.TextField;
	import flash.filters.BlurFilter;
	[SWF(width="550", height="400", frameRate="30", backgroundColor="#000000")]

public class TestSynthe extends Sprite {
		private var phase:Number=0;
		private var freq:Number=440;
		private const PI2:Number=Math.PI*2;
		private var soundChannelObject:SoundChannel= new SoundChannel();
		private var soundTr:SoundTransform=new SoundTransform();
		private var text_field:TextField = new TextField();
		private var isPlaying:Boolean=true;
		private var ball:Sprite;
		private var blurObj:BlurFilter;
                private var soundObj:Sound;
		
		public function TestSynthe() {
			soundObj = new Sound();
			soundObj.addEventListener(SampleDataEvent.SAMPLE_DATA,onSampleData);
			stage.addEventListener(MouseEvent.MOUSE_MOVE,mouseMoveHandler);
			stage.addEventListener(MouseEvent.CLICK,clickHandler);
			soundChannelObject=soundObj.play();
			addChild(text_field);
			text_field.border=true;
			text_field.background=true;
			text_field.backgroundColor=0xFFFFFF;
			text_field.width=120;
			text_field.height=20;
			text_field.x=stage.stageWidth-text_field.width-10;
			text_field.y=stage.stageHeight-text_field.height-10;
			textSet();
		}
		private function mouseMoveHandler(e:MouseEvent):void {
			freq=mouseY*2+55;
			textSet();
			if (isPlaying) {
				createBall();
			}
		}
		private function clickHandler(e:MouseEvent):void {
                        
			isPlaying=! isPlaying;
			if (! isPlaying) {
				//soundTr.volume=0;
				//soundChannelObject.soundTransform=soundTr;
                                soundChannelObject.stop();
                                soundObj.removeEventListener(SampleDataEvent.SAMPLE_DATA,onSampleData);
                                
			} else {
				//soundTr.volume=1;
				//soundChannelObject.soundTransform=soundTr;
                                soundObj.addEventListener(SampleDataEvent.SAMPLE_DATA,onSampleData);
                                soundChannelObject=soundObj.play();
			}
		}
		private function onSampleData(e:SampleDataEvent):void {
			var smpl:Number;
			//var w:Number=PI2*freq/44100;
                        var f0:Number = freq / 44100;
                        var f1:Number = 44100 / freq;
                        var PAI2:Number = 2 * Math.PI;

var latency:Number=e.position/44.1-soundChannelObject.position;

for (var i:int = 0; i < 2048; ++i) {
                                /*
				phase+=w;
				if (phase>PI2) {
					phase-=PI2;
				}

smpl=Math.sin(phase);*/
                                smpl=(Math.sin(PAI2 * f0 * Number(i + e.position)) < 0) ?
              (4 * f0 * ((i + e.position) % (f1 / 2)) - 1) :
              (-4 * f0 * ((i + e.position) % (f1 / 2)) + 1);
				e.data.writeFloat(smpl);
				e.data.writeFloat(smpl);
			}
		}
		private function textSet():void {
			var str:String=String(freq);
			text_field.text="Frequency="+str+"Hz";
		}
		private function createBall():void {
			blurObj=new BlurFilter();
			blurObj.blurX=2;
			blurObj.blurY=2;
			ball=new Sprite();
			addChild(ball);
			ball.graphics.beginFill(Math.random()*0xFFFFFF);
			ball.graphics.drawCircle(mouseX,mouseY,freq/10);
			ball.graphics.endFill();
			ball.blendMode="add";
			ball.filters=[blurObj];
			ball.addEventListener(Event.ENTER_FRAME,efHandler);
                        //ball.addEventListener(MouseEvent.CLICK,clickHandler)
		}
		private function efHandler(e:Event):void {
			var targetSprite:Sprite=e.target as Sprite;
			targetSprite.alpha-=0.15;
			blurObj.blurX+=5;
			blurObj.blurY+=5;
			if (targetSprite.alpha<0) {
				targetSprite.removeEventListener(Event.ENTER_FRAME,efHandler);
				removeChild(targetSprite);
                                targetSprite=null;
                                
			}
			targetSprite.filters=[blurObj];
		}
	}
}

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