zarg — Reads from a location in za space at a-rate, adds some gain.
kndx -- points to the za location to be read.
kgain -- multiplier for the a-rate signal.
zarg reads the array of floats at kndx in za space, which are ksmps number of a-rate floats to be processed in a k cycle. zarg also multiplies the a-rate signal by a k-rate value kgain.
Here is an example of the zarg opcode. Play zarg.csd
Example 1242. Example of the zarg 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 ; Audio out Audio in No messages -odac -iadc -d ;;;RT audio I/O ; For Non-realtime ouput leave only the line below: ; -o zarg.wav -W ;;; for file output any platform </CsOptions> <CsInstruments> ; Initialize the global variables. sr = 44100 kr = 4410 ksmps = 10 nchnls = 1 ; Initialize the ZAK space. ; Create 1 a-rate variable and 1 k-rate variable. zakinit 1, 1 ; Instrument #1 -- a simple waveform. instr 1 ; Generate a simple sine waveform, with an amplitude ; between 0 and 1. asin oscil 1, 440, 1 ; Send the sine waveform to za variable #1. zaw asin, 1 endin ; Instrument #2 -- generates audio output. instr 2 ; Read za variable #1, multiply its amplitude by 20,000. a1 zarg 1, 20000 ; Generate audio output. out a1 ; Clear the za variables, get them ready for ; another pass. zacl 0, 1 endin </CsInstruments> <CsScore> ; Table #1, a sine wave. f 1 0 16384 10 1 ; Play Instrument #1 for one second. i 1 0 1 ; Play Instrument #2 for one second. i 2 0 1 e </CsScore> </CsoundSynthesizer>