sum — Sums any number of a-rate signals, or array elements.


Sums any number of a-rate signals, or array elements.


ares sum asig1 [, asig2] [, asig3] [...]
kres sum karr
ires sum iarr


asig1, asig2, ... -- a-rate signals to be summed (mixed or added).

karr, iarr -- Csound 1-dimensional arrays


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

Example 1054. Example of the sum 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   ;;;realtime audio out
;-iadc    ;;;uncomment -iadc if realtime audio input is needed too
; For Non-realtime ouput leave only the line below:
; -o sum.wav -W ;;; for file output any platform

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

gisine ftgen 0, 0, 2^10, 10, 1

instr 1

a1   oscili 1, 10.0, gisine		;combine 3 sinusses
a2   oscili 1, 1.0, gisine		;at different rates
a3   oscili 1, 3.0, gisine
ares sum a1, a2, a3			;sum them

ares = ares*100				;scale result and
asig poscil .5, ares+110, gisine	;add to frequency			
     outs asig, asig


i1 0 5


Author: Gabriel Maldonado
April 1999

New in Csound version 3.54

Array versions new in version 6.09