zacl
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## zacl

zacl — Clears one or more variables in the za space.

## Description

Clears one or more variables in the za space.

## Syntax

    zacl kfirst, klast

## Performance

kfirst -- first zk or za location in the range to clear.

klast -- last zk or za location in the range to clear.

zacl clears one or more variables in the za space. This is useful for those variables which are used as accumulators for mixing a-rate signals at each cycle, but which must be cleared before the next set of calculations.

## Examples

Here is an example of the zacl opcode. It uses the files zacl.orc and zacl.sco.

Example 439. Example of the zacl opcode.

    /* zacl.orc */
    ; 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.
      asin oscil 20000, 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.
      a1 zar 1

      ; Generate the audio output.
      out a1

      ; Clear the za variables, get them ready for
      ; another pass.
      zacl 0, 1
    endin
    /* zacl.orc */

    /* zacl.sco */
    ; 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
    /* zacl.sco */

## See Also

zamod, zar, zaw, zawm, ziw, ziwm

## Credits

Author: Robin Whittle
Australia
May 1997

Example written by Kevin Conder.

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