Partial sound filtering

[Former user]

Original [issue 106](https://code.google.com/p/genplus-gx/issues/detail?id=106) created by westonlast on 2010-07-20T05:02:30.000Z:

1. Set both FM and PSG to 1.00 2. Disable PSG Boost 3. Reduce the FM FIR rolloff percentage (95.00%, for example)

FM now sounds more like the Model 1 console, but the PSG is bright and perfect. The PSG cuts through and is very unrealistic. Kega Fusion has a Filtering option that includes both the YM2612 and PSG together. It sounds very realistic. Could you mix the PSG with the FM and put that through the FIR filter? Currently the PSG sticks out like a sore thumb.

[Former user]

Comment # 1 originally posted by ekeeke31 on 2010-07-20T07:07:34.000Z:

Low-Pass filter affects both PSG and FM. I don't feel PSG sounds bad at all, it's barely used in games anyway.