Posted: 3/4/2012 1:17 AM
Post subject: NES - incorrect bias (sound)?
Quote
natt
Editor, Emulator Coder, Site Developer
Joined: 5/11/2011
Posts: 1108
Location: Murka
top is the intro to zanac through avicapture with bizhawk bottom is the intro to zanac through avicapture with fceux http://img543.imageshack.us/img543/3158/nessoundbias.png I wouldn't expect bit-exact output, and there are a number of differences that I don't consider important, and I'm sure there are things that FCEUX gets wrong, but in this case it looks like Bizhawk has the 0 point of its wave generation wrong? This sort of thing can cause problems in audio processing: your dynamic range is halved, and even if you're in under your dynamic range limit, mixing with other audio that is properly 0-centered can have major clipping issues. So that can be important during playback of an encode if the user is listening to anything else at the same time.