# Getting Master Channel from Event

**URL:** <https://qa.fmod.com/t/getting-master-channel-from-event/14720>\
**Category:** FMOD Studio\
**Created:** [May 27, 2019, 3:25pm UTC](https://qa.fmod.com/t/getting-master-channel-from-event/14720 "2019-05-27T15:25:42Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![matiaslizana](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/matiaslizana/32/185_2.png) [@matiaslizana](https://qa.fmod.com/u/matiaslizana)\
**Post date:** [May 27, 2019, 3:25pm UTC](https://qa.fmod.com/t/getting-master-channel-from-event/14720/1 "2019-05-27T15:25:42Z")

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How can I get the master channel from a concrete event? I’m trying to change the frequency of the entire event.

Thanks

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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 3, 2019, 1:01am UTC](https://qa.fmod.com/t/getting-master-channel-from-event/14720/2 "2019-06-03T01:01:35Z")

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You can change the pitch of an entire Event using: [EventInstance::setPitch](https://fmod.com/resources/documentation-api?version=2.0&page=studio-api-eventinstance.html#studio_eventinstance_setpitch)

Manually digging in to the channels and changing frequency isn’t really advised as it can wreak havoc on the playback system, especially if you are trying to play things backwards with a negative frequency.

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<div class="post-metadata">

**Author:** ![matiaslizana](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/matiaslizana/32/185_2.png) [@matiaslizana](https://qa.fmod.com/u/matiaslizana)\
**Post date:** [June 3, 2019, 7:15am UTC](https://qa.fmod.com/t/getting-master-channel-from-event/14720/3 "2019-06-03T07:15:13Z")

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Using setPitch doesn’t solve my problem. I need setFrequency because I want it to go really slowmotion, and setPitch only allows me like +/-24st. Please let me know if it’s possible to get the master channel and change its frequency.

Thanks

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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:** [June 3, 2019, 10:54pm UTC](https://qa.fmod.com/t/getting-master-channel-from-event/14720/4 "2019-06-03T22:54:45Z")

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To get the master channel of an Event, you can use:

[EventInstance::getChannelGroup](https://www.fmod.com/resources/documentation-api?version=2.0&page=studio-api-eventinstance.html#studio_eventinstance_getchannelgroup)

For further discussion on Event frequency see [this post](https://qa.fmod.com/t/multi-instruments-playing-backwards/14719).