fofcyclevoc

Abstract

Port of faust's "Sf Formant FOF Cycle" vocal model

Description

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. This model does not work with noise in the source signal so exType has been removed and model does not depend on SFFormantModel function. Source: https://faustlibraries.grame.fr/libs/physmodels/#pmsfformantmodelfofcycle

Keyword Parameters

Parameter	Description	Default	Range (not enforced)
vibfreq	Vibrato frequency	6	4 - 8
vibgain	Vibrato gain (amplitude of vib LFO)	0.5	0-1
vowel	Vowel (0=a, 1=e, 2=i, 3=o, 4=u)	0	0-4
voicetype	Voice type (0: alto, 1: bass, 2: countertenor, 3: soprano, 4: tenor)	0	0-4
envattack	Attack time (in milliseconds)	10	0-500
bend	Bend in semitones applied to the base frequency.	0	-2 - 2
sustain	Amplitude when gate is off	0	0-1
outgain	Gain factor applied at the output	0.5	0-1

Syntax

aout fofcyclevoc kgate, kfreq, kgain [, Sparam_n, kvalue_n, ...]

Multiple pairs of Skey: kvalue can be given (see the table above for possible keys)

Arguments

kgate: Gate. A new "note" starts when the gate is open and stops when the gate is close
kfreq: Fundamental frequency
kgain: Excitation gain
Sparam_n: Parameter name to modify (constant string).
kvalue_n: Parameter value corresponding to the previous name

Output

aout: Output signal

Execution Time

Performance

Examples

<CsoundSynthesizer>

<CsInstruments>
sr     = 44100
ksmps  = 64
nchnls = 2
0dbfs  = 1

instr 1
  kgate = trighold:k(metro(4), 0.5)
  kpitch = 60
  asig fofcycle kgate, mtof:k(kpitch), 0.9, "vowel", 0
  outch 1, asig
endin  

</CsInstruments>

<CsScore>
i 1 0 10


</CsScore>
</CsoundSynthesizer>

Credits

Eduardo Moguillansky, 2024