Funny or disturbing sounds


Play the following files on "infite loop."

The infinitely rising tone, version 1.
The infinitely falling tone, version 1.

The infinitely rising tone, version 2.
The infinitely falling tone, version 2.

Can you explain how these tones work?
If you want to make music using these strange sounds, you can use this major scale, which you should also play on "infinte loop" to see that you can "go up forever."