# Is it possible to apply filters and save audio data without playback?

**URL:** <https://qa.fmod.com/t/is-it-possible-to-apply-filters-and-save-audio-data-without-playback/19641>\
**Category:** Unity\
**Created:** [December 14, 2022, 8:20am UTC](https://qa.fmod.com/t/is-it-possible-to-apply-filters-and-save-audio-data-without-playback/19641 "2022-12-14T08:20:31Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![luke\_shin](https://avatars.discourse-cdn.com/v4/letter/l/82dd89/32.png) [@luke\_shin](https://qa.fmod.com/u/luke_shin)\
**Post date:** [December 14, 2022, 8:20am UTC](https://qa.fmod.com/t/is-it-possible-to-apply-filters-and-save-audio-data-without-playback/19641/1 "2022-12-14T08:20:31Z")

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Unity’s AudioMixer and AudioMixerGroups don’t have the function that applying their’s sound effects without playback.

So I need to playback audioSource and implement OnAudioFilterRead function. sadly i have to wait for playback time.

is there any functions applying filters and effects to original sound sources without playback in FMOD?

ex) no implementation in unity, just my desire  
audioClip.GetAudioMixerAppliedData(audioMixerGroup, out float modifiedBuffers);  
whether exists this Code of FMod Version.

Thanks in advance.

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**Author:** ![Connor\_FMOD](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/connor_fmod/32/3685_2.png) [@Connor\_FMOD](https://qa.fmod.com/u/Connor_FMOD)\
**Post date:** [December 15, 2022, 3:14am UTC](https://qa.fmod.com/t/is-it-possible-to-apply-filters-and-save-audio-data-without-playback/19641/2 "2022-12-15T03:14:53Z")

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Hi,

we have a function that might be what you are looking for: [FMOD API | Core API Reference](https://fmod.com/docs/2.02/api/core-api-sound.html#sound_readdata). This will allow you to decode data without playing it. How to use the function is explained in [FMOD API | Glossary](https://fmod.com/docs/2.02/api/glossary.html#reading-sound-data).

Hope this helps!

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<div class="post-metadata">

**Author:** ![luke\_shin](https://avatars.discourse-cdn.com/v4/letter/l/82dd89/32.png) [@luke\_shin](https://qa.fmod.com/u/luke_shin)\
**Post date:** [December 15, 2022, 3:27am UTC](https://qa.fmod.com/t/is-it-possible-to-apply-filters-and-save-audio-data-without-playback/19641/3 "2022-12-15T03:27:44Z")

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Thanks for reply!

I will try on It.