Audio capture/playback

Question

I'm using a TargetDataLine to record, and a SourceDataLine to simultaneously playback, and the playback is delayed by about 100ms. Can you get rid of that delay?

Answer 1

Here you go.  I use this script so I know it works.  You need to have at least flash player 10.
You need 3 buttons.  1 record button - linkage = micRec , 1 play button - linkage = soundPlay  and one stop recording button - linkage = stopRecord
i keep the stop button off the stage and have it moved onto the stage when the record button is pushed.  Then finally move both the record and the stop recording button off the stage when the stop recording button is pushed.
micRec.addEventListener(MouseEvent.CLICK,recordMic);
function recordMic(event:MouseEvent){
micRec.x = -250;
stopRecord.x = 117;
const DELAY_LENGTH:int = 4000;
var mic:Microphone = Microphone.getMicrophone();
mic.setSilenceLevel(0, DELAY_LENGTH);
//mic.gain = 80;
mic.rate = 25;
mic.addEventListener(SampleDataEvent.SAMPLE_DATA, micSampleDataHandler);
stopRecord.addEventListener(MouseEvent.CLICK,SREC);
var soundBytes:ByteArray = new ByteArray();
function micSampleDataHandler(event:SampleDataEvent):void
    while(event.data.bytesAvailable)
        var sample:Number = event.data.readFloat();
        soundBytes.writeFloat(sample);
function SREC(event:MouseEvent):void
stopRecord.x = -250;
    mic.removeEventListener(SampleDataEvent.SAMPLE_DATA, micSampleDataHandler);
    soundBytes.position = 0;
    var sound:Sound = new Sound();
    sound.addEventListener(SampleDataEvent.SAMPLE_DATA, playbackSampleHandler);
soundPlay.addEventListener(MouseEvent.CLICK,SP1);
function SP1(event:MouseEvent){
soundBytes.position = 0;
    sound.play();
function playbackSampleHandler(event:SampleDataEvent):void
    for (var i:int = 0; i < 8192 && soundBytes.bytesAvailable > 0; i++)
        var sample:Number = soundBytes.readFloat();
        event.data.writeFloat(sample);
        event.data.writeFloat(sample);