randomh

randomh
Prev	Orchestra Opcodes and Operators	Next

randomh — Generates random numbers with a user-defined limit and holds them for a period of time.

Description

Generates random numbers with a user-defined limit and holds them for a period of time.

Syntax

ares randomh kmin, kmax, acps

kres randomh kmin, kmax, kcps

Performance

kmin -- minimum range limit

kmax -- maximum range limit

kcps, acps -- rate of random break-point generation

The randomh opcode is similar to randh but allows the user to set arbitrary minimum and maximum values.

Examples

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

Example 387. Example of the randomh 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
-odac           -iadc    ;;;RT audio I/O
; For Non-realtime ouput leave only the line below:
; -o randomh.wav -W ;;; for file output any platform
</CsOptions>
<CsInstruments>

; Initialize the global variables.
sr = 44100
kr = 4410
ksmps = 10
nchnls = 1

; Instrument #1.
instr 1
  ; Choose a random frequency between 220 and 440 Hz.
  ; Generate new random numbers at 10 Hz.
  kmin = 220
  kmax = 440
  kcps = 10

  k1 randomh kmin, kmax, kcps

  printks "k1 = %f\\n", 0.1, k1
endin


</CsInstruments>
<CsScore>

; Table #1, a sine wave.
f 1 0 16384 10 1

; Play Instrument #1 for one second.
i 1 0 1
e


</CsScore>
</CsoundSynthesizer>

Its output should include lines like:

k1 = 220.000000
k1 = 414.232056
k1 = 284.095184

Credits

Author: Gabriel Maldonado

Example written by Kevin Conder.