Question

I’m using the following method to dispatch a sound in X times/minute (X is determined through bpm, which is a NumericStepper object)

var mainTimer:Timer = new Timer(60 / (bpm.value * 1000),0);
mainTimer.addEventListener(TimerEvent.TIMER, fl_TimerHandler,false, 0, true); 
mainTimer.start();

function fl_TimerHandler(event:TimerEvent):void
     {
        metroTransform.volume = vol;
        flash.media.SoundMixer.soundTransform = metroTransform;
        metroChannel = metro.play();
        mainTimer.delay = 60 / bpm.value * 1000;
      }

According to this http://www.metronomeonline.com/ the sound is not sitting well. Is there something I can do to fix this problem I’m stuck in?

Path to the output file I’m getting: http://conatur.net/metroBig.swf

Answer 1

http://cookbooks.adobe.com/post_Accurate_timer-17332.html might help you.

Problem
The delay between 2 events of the timer class depends on many factors ( fps, memory, played movie clip end i.e. ). The timeout set to property delay of timer class is only approximate so there needs to be a way to increase the accuracy of the timer.

Solution
My solution to increase the accuracy is to extend the timer class and force the timer to make more cycles depending of the custom property accurate. In this way the delay between 2 events of the timer will be set delay – + accurate /2. Because the rising of the event depends form many factors truly delay between 2 events is from: delay – accurate/2 to next fired event from flash player.