pvsgain

Scale the amplitude of a pv stream.

Syntax

fsig pvsgain fsigin, kgain

Performance

fsig -- output pv stream

fsigin -- input pv stream

kgain -- amplitude scaling (defaults to 1).

Warning

It is unsafe to use the same f-variable for both input and output of pvs opcodes. Using the same one might lead to undefined behavior on some opcodes. Use a different one on the left and right sides of the opcode.

Examples

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

<CsoundSynthesizer>
<CsOptions>
; Select audio/midi flags here according to platform
-odac  ;;;realtime audio out
;-iadc    ;;;uncomment -iadc if realtime audio input is needed too
; For Non-realtime ouput leave only the line below:
; -o pvsgain.wav -W ;;; for file output any platform
</CsOptions>
<CsInstruments>

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

instr 1

kgain = p4
asig  diskin2   "drumsMlp.wav", 1
fsig  pvsanal   asig, 1024, 256, 1024, 1; analyse it
ftps  pvsgain   fsig, kgain             ; amplify it
atps  pvsynth   ftps                    ; synthesise it
      outs      atps, atps

endin
</CsInstruments>
<CsScore>

i1 0 2 .5
i1 + 2  1

e
</CsScore>
</CsoundSynthesizer>

See also

Tools for Real-time Spectral Processing (pvs opcodes)

Credits

Author: Victor Lazzarini
2011

New plugin in version 5

2011