moog

An emulation of a mini-Moog synthesizer.

Syntax

ares moog kamp, kfreq, kfiltq, kfiltrate, kvibf, kvamp, iafn, iwfn, ivfn

Initialization

iafn, iwfn, ivfn -- three table numbers containing the attack waveform (unlooped), the main looping wave form, and the vibrato waveform. The files mandpluk.aiff and impuls20.aiff are suitable for the first two, and a sine wave for the last.

Note

The files “mandpluk.aiff” and “impuls20.aiff” are also available at ftp://ftp.cs.bath.ac.uk/pub/dream/documentation/sounds/modelling/.

Performance

kamp -- Amplitude of note.

kfreq -- Frequency of note played.

kfiltq -- Q of the filter, in the range 0.8 to 0.9

kfiltrate -- rate control for the filter in the range 0 to 0.0002

kvibf -- frequency of vibrato in Hertz. Suggested range is 0 to 12

kvamp -- amplitude of the vibrato

Examples

Here is an example of the moog opcode. It uses the file moog.csd, mandpluk.aiff, and impuls20.aiff.

<CsoundSynthesizer>
<CsOptions>
; Select audio/midi flags here according to platform
-odac   ;;;realtime audio out
;-iadc    ;;;uncomment -iadc if realtime audio input is needed too
; For Non-realtime ouput leave only the line below:
; -o moog.wav -W ;;; for file output any platform
</CsOptions>
<CsInstruments>

sr = 44100
ksmps = 32
nchnls = 2
0dbfs  = 1

instr 1

kfreq  = cpspch(p4)
kfiltq = p5
kfiltrate = 0.0002
kvibf  = 5
kvamp  = .01
;low volume is needed
asig moog .15, kfreq, kfiltq, kfiltrate, kvibf, kvamp, 1, 2, 3
     outs asig, asig

endin
</CsInstruments>
<CsScore>

f 1 0 8192 1 "mandpluk.aiff" 0 0 0
f 2 0 256 1 "impuls20.aiff" 0 0 0
f 3 0 256 10 1  ; sine

i 1 0 3 6.00 .1
i 1 + 3 6.05 .89
i 1 + 3 6.09 .50
e
</CsScore>
</CsoundSynthesizer>

See Also

Models and Emulations

Credits

Author: John ffitch (after Perry Cook)
University of Bath, Codemist Ltd.
Bath, UK

New in Csound version 3.47