# Add\_CB\_onUserActiveAudioChange calling randomly

**URL:** <https://devforum.zoom.us/t/add-cb-onuseractiveaudiochange-calling-randomly/5405>\
**Category:** Windows\
**Created:** [August 8, 2019, 6:15pm UTC](https://devforum.zoom.us/t/add-cb-onuseractiveaudiochange-calling-randomly/5405 "2019-08-08T18:15:55Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![igor.lunarx](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/igor.lunarx/32/1354_2.png) [@igor.lunarx](https://devforum.zoom.us/u/igor.lunarx)\
**Post date:** [August 8, 2019, 6:15pm UTC](https://devforum.zoom.us/t/add-cb-onuseractiveaudiochange-calling-randomly/5405/1 "2019-08-08T18:15:55Z")

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**Description**  
I’m trying to monitor the ActiveSpeaker, with the C# wrapper I’m using this:  
Add\_CB\_onUserActiveAudioChange

But I noticed some strange behaviours, depending on the meeting(I dont know whats difference), this method is called on 3 seconds timer, o other meeting this is only called when someone speaks and in a third scenario I seen this calling everytime the Speaker changes.

Someone have noticed that, or have some explanation about?

**Which version?**  
C# Wrapper of the Windows SDK

**To Reproduce**  
You can use the wrapper demo on the Zoom site.  
I’ve tryed with 3 scenarios: As Anonimous, as a logged user and a corporate user.

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**Author:** ![carson.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/carson.zoom/32/785_2.png) [@carson.zoom](https://devforum.zoom.us/u/carson.zoom)\
**Post date:** [August 9, 2019, 8:28pm UTC](https://devforum.zoom.us/t/add-cb-onuseractiveaudiochange-calling-randomly/5405/2 "2019-08-09T20:28:21Z")

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Hi igor,

Thanks for the post. I will consult our engineers regarding this and get back to you.

Thanks!

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<div class="post-metadata">

**Author:** ![carson.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/carson.zoom/32/785_2.png) [@carson.zoom](https://devforum.zoom.us/u/carson.zoom)\
**Post date:** [August 14, 2019, 5:03pm UTC](https://devforum.zoom.us/t/add-cb-onuseractiveaudiochange-calling-randomly/5405/3 "2019-08-14T17:03:19Z")

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Hi igor,

Thanks for the post again. Based on the information you provided, we have identified a bug related to this. We will fix this in the next release. Please follow our Github repo for any updates:[https://github.com/zoom/zoom-c-sharp-wrapper](https://github.com/zoom/zoom-c-sharp-wrapper)

Thanks!

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**Author:** ![DeveloperBot](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/developerbot/32/12632_2.png) [@DeveloperBot](https://devforum.zoom.us/u/DeveloperBot)\
**Post date:** [August 21, 2020, 6:38pm UTC](https://devforum.zoom.us/t/add-cb-onuseractiveaudiochange-calling-randomly/5405/4 "2020-08-21T18:38:19Z")

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Closed on August 21, 2020, 6:38pm UTC