scanhammer — Copies from one table to another with a gain control.
This is is a variant of tablecopy, copying from one table to another, starting at ipos, and with a gain control. The number of points copied is determined by the length of the source. Other points are not changed. This opcode can be used to “hit” a string in the scanned synthesis code.
isrc -- source function table.
idst -- destination function table.
ipos -- starting position (in points).
imult -- gain multiplier. A value of 0 will leave values unchanged.
Here is an example of the scanhammer opcode. It uses the file scanhammer.csd.
Example 922. Example of the scanhammer 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 --limiter=0.9 ;;;realtime audio out and limiter ;-iadc ;;;uncomment -iadc if realtime audio input is needed too ; For Non-realtime ouput leave only the line below: ; -o scanhammer.wav -W ;;; for file output any platform </CsOptions> <CsInstruments> sr = 44100 ksmps = 32 nchnls = 2 0dbfs = 1 ; by Menno Knevel 2021 instr 1 initial ftgen 1, 0, p5, 10, 1 ; initial position = sine wave imass ftgen 2, 0, p5, -7, .1, p5, 1 ; masses istiff ftgen 3, 0, p5, -7, 0, p5*.3, 0.8*p5, p5*.7, 0 ; stiffness idamp ftgen 4, 0, p5, -7, 1, p5, 1 ; damping ivelo ftgen 5, 0, p5, -7, 0, p5, 0.5 ; initial velocity iamp = .20 ipch = cpsmidinn(p4) scanhammer 1, 1, 0, p6 ; scale initial position wave asig3 scantable iamp, ipch, 1, 2, 3, 4, 5 ; set ftables in motion asig foscili iamp, ipch, 1.414, .03, 1, 1 ; but use FM sound, with slow vibrato asig butlp asig, 2000 ; lowpass filter asig dcblock asig outs asig, asig endin </CsInstruments> <CsScore> s ; note size hit i1 0 10 50 128 2 ; hit very hard i1 11 10 50 . 1 ; hit normally i1 22 10 50 . .3 ; hit soft s i1 1 10 50 32 2 ; different table size i1 12 10 50 . 1 i1 23 20 50 . .3 e </CsScore> </CsoundSynthesizer>