# how to get raw data after processing by fmod

**URL:** <https://qa.fmod.com/t/how-to-get-raw-data-after-processing-by-fmod/13719>\
**Category:** FMOD Engine\
**Created:** [February 23, 2018, 3:10am UTC](https://qa.fmod.com/t/how-to-get-raw-data-after-processing-by-fmod/13719 "2018-02-23T03:10:09Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![workhardupc](https://avatars.discourse-cdn.com/v4/letter/w/35a633/32.png) [@workhardupc](https://qa.fmod.com/u/workhardupc)\
**Post date:** [February 23, 2018, 3:10am UTC](https://qa.fmod.com/t/how-to-get-raw-data-after-processing-by-fmod/13719/1 "2018-02-23T03:10:09Z")

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I loaded data from a file, and read audio data from the file. Then provide the data to fmod through pcmreadcallback and add dsp effect. But I cann’t get raw data after processing by fmod。

how to get raw data after processing by fmod?

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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:** [February 28, 2018, 3:34am UTC](https://qa.fmod.com/t/how-to-get-raw-data-after-processing-by-fmod/13719/2 "2018-02-28T03:34:06Z")

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Using Sound::lock and Sound::unlock, you can access the sound data pointer.

[https://fmod.com/resources/documentation-api?page=content/generated/FMOD\_Sound\_Lock.html#/](https://fmod.com/resources/documentation-api?page=content/generated/FMOD_Sound_Lock.html#/)

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<div class="post-metadata">

**Author:** ![workhardupc](https://avatars.discourse-cdn.com/v4/letter/w/35a633/32.png) [@workhardupc](https://qa.fmod.com/u/workhardupc)\
**Post date:** [February 28, 2018, 3:35am UTC](https://qa.fmod.com/t/how-to-get-raw-data-after-processing-by-fmod/13719/3 "2018-02-28T03:35:12Z")

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> [@](#):
>
> Using Sound::lock and Sound::unlock, you can access the sound data pointer.
> 
> [https://fmod.com/resources/documentation-api?page=content/generated/FMOD\_Sound\_Lock.html#/](https://fmod.com/resources/documentation-api?page=content/generated/FMOD_Sound_Lock.html#/)

OK, Thanks!