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<CsoundSynthesizer>
<CsOptions>
; Select audio/midi flags here according to platform
-odac ;;;realtime audio out
-iadc ;;;uncomment -iadc if real audio input is needed too
; For Non-realtime ouput leave only the line below:
; -o pconvolve.wav -W ;;; for file output any platform
</CsOptions>
<CsInstruments>
sr = 44100
ksmps = 32
nchnls = 2
0dbfs = 1
instr 1
kmix = .5 ; Wet/dry mix. Vary as desired.
kvol = .05*kmix ; Overall volume level of reverb. May need to adjust
; when wet/dry mix is changed, to avoid clipping.
; do some safety checking to make sure we the parameters a good
kmix = (kmix < 0 || kmix > 1 ? .5 : kmix)
kvol = (kvol < 0 ? 0 : .5*kvol*kmix)
; size of each convolution partion -- for best performance, this parameter needs to be tweaked
ipartitionsize = p4
; calculate latency of pconvolve opcode
idel = (ksmps < ipartitionsize ? ipartitionsize + ksmps : ipartitionsize)/sr
prints "Convolving with a latency of %f seconds%n", idel
; actual processing
al, ar ins ;get live input
awetl, awetr pconvolve kvol*(al+ar), "kickroll.wav", ipartitionsize
; Delay dry signal, to align it with the convoled sig
adryl delay (1-kmix)*al, idel
adryr delay (1-kmix)*al, idel
outs adryl+awetl, adryr+awetr
endin
instr 2
imix = 0.5 ; Wet/dry mix. Vary as desired.
ivol = .05*imix ; Overall volume level of reverb. May need to adjust
; when wet/dry mix is changed, to avoid clipping.
ipartitionsize = 1024 ; size of each convolution partion
idel = (ksmps < ipartitionsize ? ipartitionsize + ksmps : ipartitionsize)/sr ; latency of pconvolve opcode
kcount init idel*kr
; since we are using a soundin [instead of ins] we can
; do a kind of "look ahead" by looping during one k-pass
; without output, creating zero-latency
loop:
asig soundin p4, 0
awetl, awetr pconvolve ivol*(asig),"rv_stereo.wav", ipartitionsize
adry delay (1-imix)*asig,idel ; Delay dry signal, to align it with
kcount = kcount - 1
if kcount > 0 kgoto loop
outs awetl+adry, awetr+adry
endin
</CsInstruments>
<CsScore>
i 1 0 20 1024 ;play live for 20 seconds
i 2 20 5 "fox.wav"
i 2 25 5 "flute.aiff"
e
</CsScore>
</CsoundSynthesizer>
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