And there's a really simple way to prove that using compression like WinRAR does not affect the sound of your audio:

Take a wav file. Preferably something sonicly complicated.
Compress it.
Extract the copy.
Put them both (original and decompressed) into any good DAW. Make sure they are EXACTLY lined up.
Flip the phase on one of them.

The sound will completely disappear. Because the signals are identical and phase-cancel each other out. If you hear anything, then either the files are not aligned or the compression has "colored" the file.

I have done this test with WinRAR myself and found it completely cancels out every time. Therefore, the compress has not affected it in any way.

Last edited by MovingAir; 04/24/19 06:49 AM.