pvsgain
pvsgain — Scale the amplitude of a pv stream.
Performance
fsig -- output pv stream
fsigin -- input pv stream
kgain -- amplitude scaling (defaults to 1).
![[Warning]](images/warning.png)
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Warning |
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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.
Example 837. Example of the pvsgain 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 ;;;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 "beats.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>