[snip] I've just gone through testing. Some simple data tests show 16 and 32-bits work. The 24 bit case seems to be weird, it looks like the 24-bit expects 24 bit samples in 32 bit words. I can't see any packing options to do 24 bit in 24 bit, so we may have to remove 24 bit sample support (which is a shame) My preference is to remove the 24-bit support and keep the 32 bit in. -- Ben Dooks http://www.codethink.co.uk/ Senior Engineer Codethink - Providing Genius https://www.codethink.co.uk/privacy.html