Why does noise canceling AirPods make a whirring sound?

"AirPod 4 ANC making whirring sound in left ear: When I turn on any kind of noise control (transparency, ANC, or adaptive) there’s a strange whirring sound in the left ear. I got them on Christmas and they’ve worked fine since then. It seems like the issue is only occasionally however. When I was at the YMCA I didn’t notice it and completely forgot about it from last night; same with when I was in the car. Then I got to my room and turned them on, and the issue started again. The sound is similar to that of Any help is appreciated."

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Troubleshooting AirPods Distortion:

A. Interference:

It may be interference that getting in the way here. 

Some Links in Regards to Interference:

• If your AirPods Pro Make Crackling or Static Sounds - Apple Support
• If the Sound from your Wireless Headphones Cuts Out or is Distorted - Apple Support

B. You need both AirPods for these to work.

Are you only using Apple apps to play music or videos?