@spec known?(atom()) :: boolean()

Whether name is a synth here.

@spec names() :: [atom()]

Every synth name, sorted.

@spec resonance(number()) :: float()

The resonance a Sonic Pi :res from 0 to 1 stands for, as a TuningFork.Filter :q.

@spec voice(atom() | String.t() | TuningFork.Voice.t(), float(), keyword()) ::
  TuningFork.Voice.t() | [TuningFork.Voice.t()]

The voice or voices name plays at hz with opts.

name is one of names/0, a TuningFork.Voice used as it is with the pitch and the options applied, or a string TuningFork.Kit.known?/1 accepts, played through the kit at the note nearest hz. A detuned synth gives a list of voices. Raises ArgumentError for a name that is not here.

Options

• :amp — level, 1 being normal; :pan from -1 to 1
• :attack, :decay, :sustain, :release — seconds; :sustain is how long the note is held. Defaults 0, 0, 0 and 1
• :sustain_level — the level held during :sustain, default 1
• :cutoff — a lowpass, as a MIDI note; :res — its resonance, 0 to 1; :cutoff_min — where a swept filter starts
• :detune — semitones between the voices of a detuned synth
• :divisor, :depth — FM ratio and depth; :mod_phase, :mod_range — the mod_* synths' vibrato
• :vib, :vibmod, :crush, :distort, :coarse, :phaser, :phaserdepth, :vowel, :fm, :fmh, :fmattack, :highpass, :seed — TuningFork.Voice fields, passed through

Any other key is ignored.