And my last question for now, does flac also compress most significant bits that are 0?
Why is it white noise that is added, wouldn't it be less noticeably to use something more like pink noise?
All the noise shaping stuff I've seen tries to push noise into higher frequencies, does the opposite (lower freqs.) not make sense?
[...] but would it also be possible to shape the noise depending on the content of each block?So if a hi-hat or cymbal was hit the noise would be shaped to be "hidden" behind the "crash" sound?