new superdough features

[felixroos]

let's use this issue to collect ideas for new features of superdough, the synth / sampler / effects engine..

• xentonal synth #675
• effect bus #665
• fm wave control #672
• multichannel audio #643
• load samples as base64  #626
• audio input #610
• sound aliases #592
• more flexible format for sample loading / strudel.json #540
• better envelopes #522
• looping samples #499
• audio worklets performance problems #479
• support alternative solmization types #302
• add freesound api connector? #280
• support waveformN format #191
• add sf2 soundfonts to sound registry #182
• Tonal MIDI is C4-based notation while Tidal is C3 I think. #339
• audio node caching, tree -> graph #673
• vibrato + fm for samples? #702
• vibrato attack #703

feel free to add any ideas here and I'll add them to the list

[Bubobubobubobubo]

Here are some more:

• Envelopes on fmh and fmi for more dynamic synthesis.
• Envelopes on filter cutoffs and variable parameters.
• Basic Karplus Strong algorithm exposed as an oscillator.
• Simple Wavetable synthesis with a set selection of waves. Adding loop points and thus wavetable synthesis #698
• Inject dynamic Faust code using AudioWorklets (see https://www.npmjs.com/package/@grame/faustwasm)
• Using multiple waveforms on a single synth:
  • à la Moog: saw|triangle|sine.
  • Manual oscillator tuning/detuning (cent, etc...).
• Access to the woscillators
• More simple basic effects (chorus, phaser, etc).
• Filter Quality through a string (LP12, LP24) and unified set of parameters for tweaking the filter (cutoff, resonance, gain). Basic list of filter designs.
• Noise Plethora inspired oscillator for percussion design (short envelopes, rich noise).

[felixroos]

maybe this could be used, or at least some effects from here: https://github.com/Theodeus/tuna/tree/master

[felixroos]

some interesting things can be found here (gpl2), including:

• custom adsr
• custom delay
• distortion
• sample and hold
• noise
• pulse wave with variable duty cycle
• slide / portamento
• custom Two-pole low-pass filter
• wavefolder

[felixroos]

more interesting things can be found here (mit) (mirrored here), including:

• ramp osc
• diode filter
• a bunch of custom drum synthesis
• RingBuffer
• Pluck (Karplus Strong?)
• LP / LP2 / HP / BP
• feedback
• Moog Filter
• custom envelopes
• custom synths
• bit8 ?
• percussion synthesis

[Bubobubobubobubo]

I would suggest to prioritize static and global effects for a next batch of improvements. Having chorus + phaser + flanger + wavefolder + more reverb options would be really useful. Adds a lot of audio modulation for a very cheap cost.