Uses FM synthesis to create a "Heavy Metal" sound. It comes from a family of FM sounds, all using 4 basic oscillators and various architectures, as used in the TX81Z synthesizer.
All these opcodes take 5 tables for initialization. The first 4 are the basic inputs and the last is the low frequency oscillator (LFO) used for vibrato. The last table should usually be a sine wave.
The initial waves should be:
ifn1 -- sine wave
ifn2 -- twopeaks.aiff
ifn3 -- twopeaks.aiff
ifn4 -- sine wave
![]() | Note |
---|---|
The file "twopeaks.aiff" is also available at ftp://ftp.cs.bath.ac.uk/pub/dream/documentation/sounds/modelling/. |
kamp -- Amplitude of note.
kfreq -- Frequency of note played.
kc1, kc2 -- Controls for the synthesizer:
kc1 -- Total mod index
kc2 -- Crossfade of two modulators
Algorithm -- 3
kvdepth -- Vibrator depth
kvrate -- Vibrator rate
Here is an example of the fmmetal opcode. It uses the files fmmetal.orc, fmmetal.sco, and twopeaks.aiff.
Example 1. Example of the fmmetal opcode.
/* fmmetal.orc */
/* Written by Kevin Conder */
; Initialize the global variables.
sr = 22050
kr = 2205
ksmps = 10
nchnls = 1
; Instrument #1.
instr 1
kamp = 10000
kfreq = 440
kc1 = 6
kc2 = 5
kvdepth = 0
kvrate = 0
ifn1 = 1
ifn2 = 2
ifn3 = 2
ifn4 = 1
ivfn = 1
a1 fmmetal kamp, kfreq, kc1, kc2, kvdepth, kvrate, ifn1, ifn2, ifn3, ifn4, ivfn
out a1
endin
/* fmmetal.orc */
/* fmmetal.sco */
/* Written by Kevin Conder */
; Table #1, a normal sine wave.
f 1 0 32768 10 1
; Table #2, the "twopeaks.aiff" audio file.
f 2 0 256 1 "twopeaks.aiff" 0 0 0
; Play Instrument #1 for one second.
i 1 0 1
e
/* fmmetal.sco */