fluidOut — Outputs sound from a given fluidEngine


aleft, aright fluidOut ienginenum


Plugin opcode in fluidOpcodes. This opcode is part of the plugin repository and has to be installed separately. The plugin repository can be found here: https://github.com/csound/plugins

Outputs the sound from a fluidEngine.


ienginenum -- engine number assigned from fluidEngine


aleft -- Left channel audio output.

aright -- Right channel audio output.

Invoke fluidOut in an instrument definition numbered higher than any fluidcontrol instrument definitions. All SoundFonts used in the fluidEngine numbered ienginenum send their audio output to this one opcode. Send a note with an indefinite duration to this instrument to turn the SoundFonts on for as long as required.


Here is an example of the fluidOut opcode with two fluidOuts. It uses the file fluidOut.csd, 01hpschd.sf2 and 22Bassoon.sf2.

Example 347. Example of the fluidOut opcode.

See the sections Real-time Audio and Command Line Flags for more information on using command line flags.

; Select audio/midi flags here according to platform
-odac   -+rtmidi=virtual  -M0    ;;;realtime audio out and realtime midi in
;-iadc    ;;;uncomment -iadc if realtime audio input is needed too
; For Non-realtime ouput leave only the line below:
;-o fluidOut.wav -W ;;; for file output any platform

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

giengine1 fluidEngine
; soundfont path to manual/examples
isfnum1	 fluidLoad "01hpschd.sf2", giengine1, 1
	 fluidProgramSelect giengine1, 1, isfnum1, 0, 0

giengine2 fluidEngine
; soundfont path to manual/examples
isfnum2	 fluidLoad "22Bassoon.sf2", giengine2, 1
	 fluidProgramSelect giengine2, 1, isfnum2, 0, 70

instr 1

	mididefault   60, p3
	midinoteonkey p4, p5
ikey	init p4
ivel	init p5
	fluidNote giengine1, 1, ikey, ivel


instr 2

	mididefault   60, p3
	midinoteonkey p4, p5
ikey	init p4
ivel	init p5
	fluidNote giengine2, 1, ikey, ivel


instr 98

imvol  init 7
asigl, asigr fluidOut giengine1
       outs asigl*imvol, asigr*imvol

instr 99

imvol init 4
asigl, asigr fluidOut giengine2		 ;add a stereo flanger
adelL linseg 0, p3*.5, 0.02, p3*.5, 0	 ;max delay time =20ms
adelR linseg 0.02, p3*.5, 0, p3*.5, 0.02 ;max delay time =20ms		
asigL flanger asigl, adelL, .6
asigR flanger asigr, adelR, .6
      outs asigL*imvol, asigR*imvol

i 1 0 2 60 100 ;play one note of instr 1
i 2 2 2 60 100 ;play another note of instr 2 and...
i 98 0 60      ;play virtual keyboard for 60 sec.
i 99 0 60

The output should include lines like these:

chnl 1 using instr 1
chnl 2 using instr 2

SoundFont:   1  Bank:   0  Preset:   0  Harpsichord I-8
SoundFont:   1  Bank:   0  Preset:  70  Ethan Bassoon mono

See also


More information on soundfonts is in the Floss Manuals: https://flossmanual.csound.com/midi/reading-midi-files

For other information on soundfonts look in the Wikipedia: http://en.wikipedia.org/wiki/Soundfont


Michael Gogins (gogins at pipeline dot com), Steven Yi. Thanks to Peter Hanappe for Fluidsynth.

New in Csound5.00