Create standard modules useful in synthesizers

[elektrokokke]

For example:

• delay
• other filter types (high-pass, band-pass, comb filter)
• more efficient saw oscillator
• efficient pulse oscillator (pulse-width modulated)
• lfos (maybe just add a frequency parameter to oscillators and make a non-aliasing-reduced version)
• vocoder

[elektrokokke]

Also:

• a MIDI module that splits incoming note on and note off messages to different outputs (to enable polyphonic playing of sounds)

[elektrokokke]

Also:

• flanger
• phaser
• panorama