The title says it all. What sample rates are possible for an MP3 file?
It is my understanding that there are only a few bits for specifying the sample rate. I know that 44.1 kHz and 48 kHz are supported. And I think also some smaller sample rates. Anything between 44.1 kHz or over 48 kHz?
I know also that it's possible to have different parts in the same MP3 file to play with different sample rates, but how common is that in real life?