fmrhode

Uses FM synthesis to create a Fender Rhodes electric piano sound.

It comes from a family of FM sounds, all using 4 basic oscillators and various architectures, as used in the TX81Z synthesizer.

Syntax

ares fmrhode kamp, kfreq, kc1, kc2, kvdepth, kvrate, ifn1, ifn2, \
             ifn3, ifn4, ivfn

Initialization

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 -- sine wave
ifn3 -- sine wave
ifn4 -- fwavblnk.aiff

Note

The file “fwavblnk.aiff” is also available at ftp://ftp.cs.bath.ac.uk/pub/dream/documentation/sounds/modelling/.

Performance

kamp -- Amplitude of note.

kfreq -- Frequency of note played.

kc1, kc2 -- Controls for the synthesizer:

kc1 -- Mod index 1
kc2 -- Crossfade of two outputs
Algorithm -- 5

kvdepth -- Vibrator depth

kvrate -- Vibrator rate

Examples

Here is an example of the fmrhode opcode. It uses the file fmrhode.csd, and fwavblnk.aiff.

Example of the fmrhode opcode.
<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 fmrhode.wav -W ;;; for file output any platform
</CsOptions>
<CsInstruments>

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

instr 1

kfreq = 220
kc1 = p4
kc2 = p5
kvdepth = 0.01
kvrate = 3
ifn1 = 1
ifn2 = 1
ifn3 = 1
ifn4 = 2
ivfn = 1

asig fmrhode .5, kfreq, kc1, kc2, kvdepth, kvrate, ifn1, ifn2, ifn3, ifn4, ivfn
     outs asig, asig

endin
</CsInstruments>
<CsScore>
;  sine wave.
f 1 0 32768 10 1
; audio file.
f 2 0 256 1 "fwavblnk.aiff" 0 0 0

i 1 0 3 6 0
i 1 + . 6 3
i 1 + . 20 0
e
</CsScore>
</CsoundSynthesizer>

Credits

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

New in Csound version 3.47