"Bit perfect" is one of those phrases that is easy to grasp, but not really very meaningful.Kdmeizk wrote: Why should I edit without “bit-perfect” in mind?
32-bit -> 8-bit is obviously not bit perfect, right?
8-bit -> 32-bit -> 8-bit may be lossless.
24-bit -> 64-bit -> 24-bit -> laptop / iPod / other portable player, is probably less than 16-bit in terms of signal to noise (last time I looked, Apple were quoting "SNR > 90 dB" and "THD+N < -75 dB")
The smallest, non-zero, 32-bit float value is 1.40130×10−45 (about 0.00000000000000000000000000000000000000000000014), but sound cards are 24-bit at best, so that will be converted to zero + noise, where "noise" will be millions of times larger than this tiny value.