Description

Uses FM synthesis to create a Hammond B3 organ 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 fmb3 kamp, kfreq, kc1, kc2, kvdepth, kvrate, ifn1, ifn2, ifn3, ifn4, ivfn

Initialization

fmb3 takes 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:

Performance

kamp -- Amplitude of note.

kfreq -- Frequency of note played.

kc1, kc2 -- Controls for the synthesizer:

kvdepth -- Vibrator depth

kvrate -- Vibrator rate

Examples

Here is an example of the fmb3 opcode. It uses the file fmb3.csd.

<CsoundSynthesizer>
<CsOptions>
; Select audio/midi flags here according to platform
; Audio out   Audio in    No messages
-odac           -iadc     -d     ;;;RT audio I/O
; For Non-realtime ouput leave only the line below:
; -o fmb3.wav -W ;;; for file output any platform
</CsOptions>
<CsInstruments>

; Initialize the global variables.
sr = 44100
kr = 4410
ksmps = 10
nchnls = 1

; Instrument #1.
instr 1
  kamp = 15000
  kfreq = 440
  kc1 = 5
  kc2 = 5
  kvdepth = 0.005
  kvrate = 6
  ifn1 = 1
  ifn2 = 1
  ifn3 = 1
  ifn4 = 1
  ivfn = 1

  a1 fmb3 kamp, kfreq, kc1, kc2, kvdepth, kvrate,  \
          ifn1, ifn2, ifn3, ifn4, ivfn
  out a1
endin


</CsInstruments>
<CsScore>

; Table #1, a sine wave.
f 1 0 32768 10 1

; Play Instrument #1 for two seconds.
i 1 0 2
e


</CsScore>
</CsoundSynthesizer>

          

See Also

fmbell, fmmetal, fmpercfl, fmrhode, fmwurlie

Credits

Example written by Kevin Conder.

New in Csound version 3.47