High pitched sound in LD, very enoying.

I wonder if anyone else has experienced a high pitched noisy sound in LD. The sound is very disturbing and painfull. I have experienced this and wonder what it is all about? (A way to get rid of it is to simply relax and the sound eventually goes away.)

Any guesses or facts?

Sounds similar to what people report of what happens when they go through WILDs. Just a comment, no guesses here.

I had that annoying sound in my first lucid dream. I do not know what it was, but in my dream it was the machinary of a lift screeching. I just pictured a volume control and turned it down and the sound went away.

I wonder what it could be :eh: