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 |
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The files "mandpluk.aiff" and "impuls20.aiff" are also available at ftp://ftp.cs.bath.ac.uk/pub/dream/documentation/sounds/modelling/. |
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
Here is an example of the moog opcode. It uses the files moog.orc, moog.sco, mandpluk.aiff, and impuls20.aiff.
Example 1. Example of the moog opcode.
/* moog.orc */
/* Written by Kevin Conder */
; Initialize the global variables.
sr = 22050
kr = 2205
ksmps = 10
nchnls = 1
; Instrument #1.
instr 1
kamp = 30000
kfreq = 220
kfiltq = 0.81
kfiltrate = 0
kvibf = 1.4
kvamp = 2.22
iafn = 1
iwfn = 2
ivfn = 3
am moog kamp, kfreq, kfiltq, kfiltrate, kvibf, kvamp, iafn, iwfn, ivfn
; It tends to get loud, so clip moog's amplitude at 30,000.
a1 clip am, 2, 30000
out a1
endin
/* moog.orc */
/* moog.sco */
/* Written by Kevin Conder */
; Table #1: the "mandpluk.aiff" audio file
f 1 0 8192 1 "mandpluk.aiff" 0 0 0
; Table #2: the "impuls20.aiff" audio file
f 2 0 256 1 "impuls20.aiff" 0 0 0
; Table #3: a sine wave
f 3 0 256 10 1
; Play Instrument #1 for three seconds.
i 1 0 3
e
/* moog.sco */