scantable

scantable — A simpler scanned synthesis implementation.

Description

A simpler scanned synthesis implementation. This is an implementation of a circular string scanned using external tables. This opcode will allow direct modification and reading of values with the table opcodes.

Syntax

aout scantable kamp, kpch, ipos, imass, istiff, idamp, ivel

Initialization

ipos -- table containing position array.

imass -- table containing the mass of the string.

istiff -- table containing the stiffness of the string.

idamp -- table containing the damping factors of the string.

ivel -- table containing the velocities.

Performance

kamp -- amplitude (gain) of the string.

kpch -- the string's scanned frequency.

Examples

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

Example 759. Example of the scantable 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
-odac -+rtmidi=virtual -M0 ;;;realtime audio out and midi in
;-iadc    ;;;uncomment -iadc if realtime audio input is needed too
; For Non-realtime ouput leave only the line below:
; -o scantable.wav -W ;;; for file output any platform
</CsOptions>
<CsInstruments>

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

gi1 ftgen 1, 0, 128, 7, 0, 64, 1, 64, 0		; initial position
gi2 ftgen 2, 0, 128, -7, 1, 128, 1		; masses
gi3 ftgen 3, 0, 128, -7, 0, 64, 100, 64, 0	; stiffness
gi4 ftgen 4, 0, 128, -7, 1, 128, 1		; damping
gi5 ftgen 5, 0, 128, -7, 0, 128, 0.5		; initial velocity


instr 1

iamp ampmidi .5
ipch cpsmidi 
kenv madsr .1, .1, .8, .3

asig scantable iamp, ipch, 1, 2, 3, 4, 5
asig dcblock asig
     outs asig*kenv, asig*kenv

endin
</CsInstruments>
<CsScore>

f0 60	; play for 60 seconds
e
</CsScore>
</CsoundSynthesizer>


See Also

scanhammer

More information on this opcode: http://www.csounds.com/stevenyi/scanned/yi_scannedSynthesis.html , written by Steven Yi

Credits

Author: Matt Gilliard
April 2002

New in version 4.20