Play too effect slow the fps in android

[NovemberEleven]

In my code, one touch will play a effect. When I touch more quick, it will slow the fps.
The is coffeescript

onEnter: ()->
	@_super()
	@scheduleUpdate()
	if cc.audioEngine.preloadEffect
		cc.log 'preload effect'
		cc.audioEngine.preloadEffect "res/touch.mp3" 

touch: ()->
	cc.audioEngine.playEffect "res/touch.mp3"