Description

guiro is a semi-physical model of a guiro sound. It is one of the PhISEM percussion opcodes. PhISEM (Physically Informed Stochastic Event Modeling) is an algorithmic approach for simulating collisions of multiple independent sound producing objects.

Syntax

ares guiro kamp, idettack [, inum] [, idamp] [, imaxshake] [, ifreq] [, ifreq1]

Initialization

idettack -- period of time over which all sound is stopped

inum (optional) -- The number of beads, teeth, bells, timbrels, etc. If zero, the default value is 128.

idamp (optional) -- the damping factor of the instrument. Not used.

imaxshake (optional, default=0) -- amount of energy to add back into the system. The value should be in range 0 to 1.

ifreq (optional) -- the main resonant frequency. The default value is 2500.

ifreq1 (optional) -- the first resonant frequency.

Performance

kamp -- Amplitude of output. Note: As these instruments are stochastic, this is only an approximation.

Examples

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

<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 guiro.wav -W ;;; for file output any platform
</CsOptions>
<CsInstruments>

sr = 44100
kr = 4410
ksmps = 10
nchnls = 1

    instr 01  ;example of a guiro
a1  guiro p4, 0.01
    out a1
    endin


</CsInstruments>
<CsScore>

i1 0 1 20000
e


</CsScore>
</CsoundSynthesizer>

See Also

bamboo, dripwater, sleighbells, tambourine

Credits

New in Csound version 4.07

Added notes by Rasmus Ekman on May 2002.