Implemented biquad filters with a pull request from @dy
- only 1 more parameter!
- if positive does a high pass filter
- if negative does a low pass filter of the absolute value
- if 0 disables the filter effect
- the quality factor is set to 2
Rework and simplify noise wave shape parameter
Fix delay feedback, apply volume scale after everything else.
Hooked up filter to generators in designer
Tweaked all sound generators.
Contributors
dy