Emulator

Game Name?
Any

Game ID?
Any

What's the problem? Describe what went wrong in few words.
When Dolphin's frame limiter is changed to any value other than Off, Auto, Audio, or the target VPS of 60, the audio pitch is also changed. I don't recall this happening in much older builds, although it does happen now. It's not particularly annoying or troublesome, but I don't believe it's intended.

What did you expect to happen instead?
I expected the audio pitch to remain the same, and for the audio to only adjust speed.

What steps will reproduce the problem?

1. Load up any game with sound
2. Adjust the speed to any value outside of Auto, Audio, Off, or 60
3. Enjoy your audio's new pitch!

Which versions of Dolphin did you test on?
4.0-1487
Noticed "issue" several months back. Didn't seem to occur on significantly older builds.

Does using an older version of Dolphin solve your issue? If yes, which
versions of Dolphin used to work?
Yes, probably. Haven't cared enough to use any older builds. :(

What are your PC specifications? (including, but not limited to: Operating
System, CPU and GPU)
4770K, Win8.1 x64, R9 290

Are you using the 32 or the 64 bit version of Dolphin?
64-bit

Is there any other relevant information? (e.g. logs, screenshots,
configuration files)
I took a video of this happening! It's fun to watch!
http://youtu.be/h9kZ0V4N6JY