24 bit MP3's?

[balhoon]

Just downloaded a free MP3 from Yeasayer and when I scroll the display on the DS it reads 44.1/24bit/320 on Kinsky it reads 320/44.1. Can MP3's be 24bit?(sounds good though) Thanks.

[spoon]

As mp3 is encoded in the frequency domain, decoders can choose 16 bit, 24 bit, or even 32 bit when uncompressing the mp3. If the source file was 16 bit there would be no extra resolution, despite decoding 24, or 32 bit.