max — Produces a signal that is the maximum of any number of input signals.


The max opcode takes any number of a-rate, k-rate or i-rate signals as input (all of the same rate), and outputs a signal at the same rate that is the maximum of all of the inputs. For a-rate signals, the inputs are compared one sample at a time (i.e. max does not scan an entire ksmps period of a signal for its local maximum as the max_k opcode does).


amax max ain1, ain2 [, ain3] [, ain4] [...]
kmax max kin1, kin2 [, kin3] [, kin4] [...]
imax max iin1, iin2 [, iin3] [, iin4] [...]


ain1, ain2, ... -- a-rate signals to be compared.

kin1, kin2, ... -- k-rate signals to be compared.

iin1, iin2, ... -- i-rate signals to be compared.


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

Example 590. Example of the max 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 max.wav -W ;;; for file output any platform

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

instr 1

k1   oscili 1, 10.0, 1			;combine 3 sinusses
k2   oscili 1, 1.0, 1			;at different rates
k3   oscili 1, 3.0, 1
kmax max   k1, k2, k3
kmax = kmax*250				;scale kmax
printk2 kmax				;check the values

aout vco2 .5, 220, 6			;sawtooth
asig moogvcf2 aout, 600+kmax, .5 	;change filter around 600 Hz		
     outs asig, asig


f1 0 32768 10 1

i1 0 5

See also

Comparators and Accumulators


Author: Anthony Kozar
March 2006

New in Csound version 5.01; i-rate version new in 6.04