Sound cue pitch does not modulate on Android
I'm buillding a bubble-popping game. I have built a simple sound cue that plays a popping sound with two sources of modulation:
When playing on desktop, this works fine. However, when packaging and running on an Android target device, the pitch of the pop sound is constant.
The same thing happens whether a build, sign, and install for distribution, or just Launch a level preview on-device from the toolbar. I know that the scaling factor is properly calculated, because it's also used to render the bubbles I'm popping, and those have the right scaling applied.
Using the latest 4.7.5 Unreal Engine, downloaded from launcher. Testing on Andriod 4.4.4 running on a OnePlus One 64 GB.
Pitch modulation isn't supported on Android right now - there's nothing in the code itself to implement it.
I think it has something to do with the way OpenSLES is implemented on Android.
However it would be nice to know if there are plans about this.
Follow this question
Once you sign in you will be able to subscribe for any updates here