[markrages]

For integer values, just subtracting bytes is enough to allow much better compression ratios. See the table at https://opensource.quarq.com/zfit/zfit.pdf

[hcs]

Very handy to do with 7-Zip: -mf=Delta:4 (or just f=Delta:4 in the GUI config window). This is for 4 byte little endian integers, which works pretty well with 16-bit stereo PCM even if there's some unwanted overflow between the channels, if you can't use flac in some context (raw data, etc).