index :: synth

synth.voice_fofc~

Simple formant/vocal synthesizer with FOF-cycle filterbank.

available since version: 0.9.6

---

information

Simple formant/vocal synthesizer based on a source/filter model. The source is just a periodic impulse and the "filter" is a bank of FOF filters. Formant parameters are linearly interpolated allowing to go smoothly from one vowel to another. Voice type can be selected but must correspond to the frequency range of the synthesized voice to be realistic. A cycle of 12 FOF filters with sample-and-hold is used so that the fof filter parameters can be varied in realtime. This technique is more robust but more computationally expensive than FofSmooth

arguments:

• VOICE voice type
  type: symbol
  

• VOWEL vowel
  type: symbol
  

properties:

• @freq Get/set frequency
  type: float
  units: Hz
  range: 20..20000.0
  default: 440
  

• @gate Get/set synth gate (>0 - play)
  type: bool
  default: 0
  

• @vibr_freq Get/set vibrato frequency
  type: float
  units: Hz
  range: 1..10
  default: 6
  

• @vibr_gain Get/set vibrato frequency
  type: float
  range: 0..1
  default: 0.5
  

• @voice Get/set voice type. Note: can be set by corresponding index.
  type: symbol
  enum: alto, bass, countertenor, soprano, tenor
  default: alto
  

• @vowel Get/set vowel type. Note: can be set by corresponding index.
  type: symbol
  enum: a, e, i, o, u
  default: a
  

• @attack Get/set attack time
  type: float
  units: ms
  range: 0..1000
  default: 30
  

• @release Get/set release time
  type: float
  units: ms
  range: 0..1000
  default: 50
  

• @active Get/set on/off dsp processing
  type: bool
  default: 1
  

• @portamento Get/set portamento time
  type: float
  units: ms
  range: 0..4000
  default: 0
  

• @wsmooth Get/set vowel smoothing time
  type: float
  units: ms
  range: 0..1000
  default: 10
  

• @fvowel Get/set vowel index: 0=a, 1=e, 2=i, 3=o, 4=u. Float values can be interpoltaed.
  type: float
  range: 0..4
  default: 0
  

• @osc (initonly) Get/set OSC server name to listen
  type: symbol
  

• @id (initonly) Get/set OSC address id. If specified, bind all properties to /ID/synth_voice_fofc/PROP_NAME osc address, if empty bind to /synth_voice_fofc/PROP_NAME.
  type: symbol
  

inlets:

• control input
  type: control

outlets:

• synth output
  type: audio

keywords:

voice fof voice cycle

See also: [synth.voice_fofs~]

Authors: Serge Poltavsky

License: GPL3 or later