Feature Request: Tuning Table

[mahal]

Description

Now: Sampler is tuned for 12 Tone Equal Temperament (12TET), defined in #define NOTE_HZ(midiNoteNumber) ( 440.0f * pow(2.0f, ((midiNoteNumber) - 69.0f)/12.0f) ) in CoreSampler.cpp

New: Add possibilty to load tunings from AudioKit/Microtonality:TuningTable.

Proposed Solution

Maybe full feature set of Tuning Table is not needed. Could limit it like SynthOne does:

• Tunings are stored in a tuning table of size 128 (a mapping from midi note number to frequency)
• Tunings are octave-based, so there is always a well-defined notion of "notes-per-octave" used (to scale samples). However, AudioKit TuningTable is generalized and has no limitation on whether a tuning is octave-based or not.
• The "pitch wheel" is a log2(frequency) modulo 1 representation of the frequencies of one octave of the tuning table with middle C (note number 60) as 12 o'clock

Additional Context

• Could this new "noteDetune" on SampleDescriptor make DunneSampler compliant to TuningTable of our Microtonality Package?
• Good overview of Microtonality and AudioKit, written by Marcus Hobbs with videos: https://audiokitpro.com/tuneup/

[mahal]

implemented with https://github.com/NickCulbertson/DunneAudioKit/commit/56295dfd85c0c4e7e892b22f7c943bc2d4d64bef

[mahal]

Add the notes of the issue to documentation.