High pitch buzz in speakers after adding some LEDs

Someone told me about how he tracked down a noise problem to a string of LED lights his daughter put up in her bedroom which was on a different circuit, on a different floor of the house, and his audio system on powerline conditioning.  He found hardly any noise using one of those noise sniffing meters.  That interference was RFI transmitted through the air.

Something I discovered tonight is the buzz only comes from the left surround speaker, the right one is silent. There are two power supplies, one set of LED wall lights are on the left wall the other is on the right wall. There are many other circuits of LED lighting in the room that have been there for 15 years and all have been silent. Its just the "new" left and right wall LED COB lights we made that are causing the buzz, but only on the left surround speaker and only when the colours change to blue and green, it doesnt happen on red.

Even the LED lights in the next room can cause problems. I was able to add a direct and separate circuit for most of my rig and it helped a lot.

I added a separate circuit for my system as well. Solved several issues of hum that I had coming from lighting and appliances. I have used LED light fixtures for my turntables that caused hum in my phono-stage. I was able to alleviate this with a different placement but having the power cord close to the the phone pre wiring caused noticeable hum.