Multiband processing plugin

[Doom2fan]

• Polyphonic I/O for the bands
• Selectable number of bands?
• V/Oct frequency outputs for the bands? (Could be useful if you want to filter it before sending it back in)
• Pre-processing for the bands? (e.g., normalizing or applying curves to the amplitude levels for the bands to change processing characteristics)
• Post-processing for the bands? (e.g., low-pass, high-pass or band-pass filtering on the band inputs to tame things like distortion)
• Envelope follower expander?
• Compressor expander?