sum — Sums any number of a-rate signals, or array elements.
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. Play 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.
<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 sum.wav -W ;;; for file output any platform </CsOptions> <CsInstruments> 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 endin </CsInstruments> <CsScore> i1 0 5 e </CsScore> </CsoundSynthesizer>