m4a 64kbps @32KHz vs. 128kbps @ 44.1KHz
My game size is currently around 44MB
I want to shrink the game size as much as possible.
The music takes up most of the game's memory, so I was thinking of replacing the current music @ 128kbps with half the bitrate, this will save me another 8MB so the game will be 36MB.
There is a noticeable difference in sound quality especially when wearing headphone, but I think if players have nothing to compare it to then they wouldn't see it as lower quality.
But I'm more concerned about performance.
If a 64kbps audio file makes the game run faster then I will go with that.
I don't know if m4a files are streamed by the CPU or run through the memory in GS.
If they are loaded into the RAM then a smaller file will most likely perform better/ make the game faster.