# Delay three seconds to play audio in PCMREAD\_CALLBACK

**URL:** <https://qa.fmod.com/t/delay-three-seconds-to-play-audio-in-pcmread-callback/15254>\
**Category:** FMOD Studio\
**Created:** [November 28, 2019, 8:18am UTC](https://qa.fmod.com/t/delay-three-seconds-to-play-audio-in-pcmread-callback/15254 "2019-11-28T08:18:27Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![yingruyunduo](https://avatars.discourse-cdn.com/v4/letter/y/34f0e0/32.png) [@yingruyunduo](https://qa.fmod.com/u/yingruyunduo)\
**Post date:** [November 28, 2019, 8:18am UTC](https://qa.fmod.com/t/delay-three-seconds-to-play-audio-in-pcmread-callback/15254/1 "2019-11-28T08:18:27Z")

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Hi ,I am trying to play a real\_time audio by PCRREAD\_CALLBACK, it wroks well.  
My problem is :  
I populate sound data in the PCMREAD\_CALLBACK ,but it delay about three seconds to play.  
Can anyone help me ?  
Thanks for reaction.

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<div class="post-metadata">

**Author:** ![cameron-fmod](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/cameron-fmod/32/261_2.png) [@cameron-fmod](https://qa.fmod.com/u/cameron-fmod)\
**Post date:** [December 2, 2019, 2:52am UTC](https://qa.fmod.com/t/delay-three-seconds-to-play-audio-in-pcmread-callback/15254/2 "2019-12-02T02:52:08Z")

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It is impossible to know without seeing the source code. You should be able to use the API examples as a guide, in particular the ‘user\_created\_sound’ example.