# UE Audio Component vs. FMOD Audio Component - Envelope Followers

**URL:** <https://qa.fmod.com/t/ue-audio-component-vs-fmod-audio-component-envelope-followers/23627>\
**Category:** Unreal Engine\
**Created:** [November 11, 2025, 9:07pm UTC](https://qa.fmod.com/t/ue-audio-component-vs-fmod-audio-component-envelope-followers/23627 "2025-11-11T21:07:29Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![jeff\_fmod](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/jeff_fmod/32/1766_2.png) [@jeff\_fmod](https://qa.fmod.com/u/jeff_fmod)\
**Post date:** [November 18, 2025, 5:28am UTC](https://qa.fmod.com/t/ue-audio-component-vs-fmod-audio-component-envelope-followers/23627/2 "2025-11-18T05:28:42Z")

</div>

Yes querying the bus metering info is a good approach. The process would be:

- Find the bus with [`Studio::System::getBus`](https://fmod.com/docs/2.02/api/studio-api-system.html#studio_system_getbus)
- Get the bus’s underlying Core API `ChannelGroup` with [`Studio::Bus::getChannelGroup`](https://fmod.com/docs/2.02/api/studio-api-bus.html#studio_bus_getchannelgroup)
  - If you can’t access it, it’s probably because it hasn’t been created yet, in which case you need to force it into existence with [`Studio::Bus::lockChannelGroup`](https://fmod.com/docs/2.02/api/studio-api-bus.html#studio_bus_lockchannelgroup)

- Get the `ChannelGroup`’s [`DSP_HEAD`](https://fmod.com/docs/2.02/api/core-api-channelcontrol.html#fmod_channelcontrol_dsp_index) with [`ChannelControl::getDSP`](https://fmod.com/docs/2.02/api/core-api-channelcontrol.html#channelcontrol_getdsp)
- Enable metering on the DSP with [`DSP::setMeteringEnabled`](https://fmod.com/docs/2.02/api/core-api-dsp.html#dsp_setmeteringenabled)

Now whenever you want to get the peak or rms levels you can use [`DSP::getMeteringInfo`](https://fmod.com/docs/2.02/api/core-api-dsp.html#dsp_getmeteringinfo) on that DSP object.  
Hopefully that helps!  
EDIT: I noticed someone else happens to be using this same approach for getting metering info, in case you need a code snippet to reference [Clarification on how getMeteringInfo works](https://qa.fmod.com/t/clarification-on-how-getmeteringinfo-works/23649)

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