# Stuck in fmod database

**URL:** <https://qa.fmod.com/t/stuck-in-fmod-database/17304>\
**Category:** FMOD Engine\
**Created:** [June 8, 2021, 2:47am UTC](https://qa.fmod.com/t/stuck-in-fmod-database/17304 "2021-06-08T02:47:44Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![chriseaton](https://avatars.discourse-cdn.com/v4/letter/c/c77e96/32.png) [@chriseaton](https://qa.fmod.com/u/chriseaton)\
**Post date:** [June 8, 2021, 2:47am UTC](https://qa.fmod.com/t/stuck-in-fmod-database/17304/1 "2021-06-08T02:47:44Z")

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Hi, I’m using fmod core and here’s a problem, please help.

What I have done:

1. Created a system object and several sound objects (one sound is one audio stream, one stream is one producer clip).
2. Used fmod to change voices (add dsp audio effects).

What the problem is:  
When I previewed the video clip, it was stuck. It was verified stucking in fmod database. There’s no PcmReadCallBack and AudioDSPCallback.

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**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:** [June 15, 2021, 11:53pm UTC](https://qa.fmod.com/t/stuck-in-fmod-database/17304/2 "2021-06-15T23:53:49Z")

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Are you getting any errors or warnings in your output log?