Here's a test with FL Studio going from 32 to 24
Heres the test.
A 32 bit float and 24 bit wav rendered copy, imported into the playlist to play at the same time. Both sent to a mixer track, where one is phase inverted.
Render the result to a 32 bit wav, import it to Edison and Normalize.
The result is silence, so no truncation errors or artifacts, converting from 32 bit float to 24 bit integer. Providing you recorded from a 24 bit stream to 32 bit float in the first place.
(Repeat the test using .ogg loops from the packs folder as I did before and it reveals that -144 dB noise).
Heres another but using a 32 bit with a 16 bit then a 16 bit dithered wav copy.
Render the result, import into Edison and Normalize. The result reveals the truncation errors first, then the dithering noise second. Note the dithered noise was below -80 dB.
Image-Line :: View topic - Bit Rate And Sample Rate in FL STUDIO!!??