RE: Dc offset and laziness ...

Pablo Frank wrote:

use the opcode dcblock

> Date: Sat, 27 Jun 2009 01:21:12 -0700
> From: ilterzouomo@fastwebnet.it
> To: csound@lists.bath.ac.uk
> Subject: [Csnd]  Dc offset and laziness ...
>
>
> Ciao,
> I'm working with this csd, and resulting audio file has some dc offset jump.
> It seem happens after i've used syncgrain, but i'm not so sure ...
> If someone of you have few time and feel like doing it, can explain why
> happens that ?
> Where i'm wrong ? How can i correct that ?
>
> Always many thanks, and sorry for my today's laziness and sluggish.
>
> ciao,
> fran
>
> (P.S. Thanks Mister Lazzarini for your examples...)
>
> <CsoundSynthesizer>
> <CsOptions>
> ;csound -W -l -b4096 -o 27-6-2009_9.51.17.wav 27-6-2009_9.51.17.orc
> 27-6-2009_9.51.17.sco
> </CsOptions>
> <CsInstruments>
> sr      = 48000
> ksmps   = 128
> nchnls  = 2
> 0dbfs = 32767
>
> gaL init 0
> gaR init 0
>
> gimode ftgen 0, 0, 4096, 7, 1, 256, 0, 3584, 0, 256, 1
> giquadra ftgen 0, 0, 4096, 7, 0.05, 148, .4, 1900, .4, 148, 0.05, 1900, 0.05
> giquadra2 ftgen 0, 0, 4096, 7, 0.5, 148, 1.5, 1900, 1.5, 148, 0.5, 1900, 0.5
> gif1 ftgen 1, 0, 131072, 7, 0, 131072, 0
> gif2 ftgen 2, 0, 131072, 7, 0, 36, 1, 131000, 1, 36, 0
> gif3 ftgen 3, 0, 16384, 9, 0.5, 1, 0
>
> instr 1
>
> ires1 = p5
> ires2 = p6
> ibf = .02
> iamp = ampdb(p4)
> iseed = 0
> ibw = p5*ibf
>
> kenv linseg 0, p3*.2, 1, p3*.2, 1, p3*.6, 0
> anoise noise 1.0, .5
> aout1 reson anoise,ires1,ibw,1
> aout2 reson aout1,ires2,ibw,1
>
> aout2 balance aout2, anoise
>
> aout = aout2*kenv*iamp
> kpan linseg 0.1, p3*.66, 0.9, p3*.33, 0.5
>
> aL, aR pan2 aout, kpan
>
> gaL = aL
> gaR = aR
>
> ilevel = p7
> aL = aL * ilevel
> aR = aR * ilevel
> ;outs aL, aR
> endin
>
>
> instr 2
>
> ilevl = ampdb(p4)
> ipitch = p5
>
> kenv expseg  0.01, p3*.1, 1, p3*.8, 1, p3*.1, 0.001
>
> k1 randi  1, 01, 1
> k2 randi  1, 02, 1
> k3 randi  1, 03, 1
> k4 randi  1, 04, 1
> k5 randi  1, 05, 1
> k6 randi  1, 06, 1
> k7 randi  1, 07, 1
> k8 randi  1, 08, 1
>
> a1 oscil  k1, ipitch, gimode
> a2 oscil  k2, ipitch, gimode, .125
> a3 oscil  k3, ipitch, gimode, .250
> a4 oscil  k4, ipitch, gimode, .375
> a5 oscil  k5, ipitch, gimode, .500
> a6 oscil  k6, ipitch, gimode, .625
> a7 oscil  k7, ipitch, gimode, .750
> a8 oscil  k8, ipitch, gimode, .875
>
> aout sum  a1, a2, a3, a4, a5, a6, a7, a8
> aout = aout*kenv*ilevl
>
> kpan linseg 0.9, p3*.66, 0.1, p3*.33, 0.5
>
> aL, aR pan2  aout, kpan
>
> gaL = gaL + aL
> gaR = gaR + aR
>
> ilevel = p6
> aL = aL * ilevel
> aR = aR * ilevel
> ;outs aL, aR
> endin
>
> instr 94
>
> aout = gaL + gaR
>
> kamp = p4
> kfreq poscil 1, p5, giquadra2
>
> iomax = 100
> kol = 3
> kgr poscil 1, p6, giquadra
> kfr = kol/kgr
> kps = 2/kol
>
> awp  phasor sr/ftlen(1)
> awin tablei awp, 2, 1
>      tablew aout*awin, awp, 1, 1
> gaout syncgrain  kamp, kfr, kfreq, kgr, kps,1, 3, iomax
>
> ;outs    asig, asig
> endin
>
> instr 100
>
> irlev = p4
> kfblvl = p5
> kfco = 20000
>
> arL, arR reverbsc gaout, gaout, kfblvl, kfco
>
> arL = arL * irlev
> arR = arR * irlev
>
> outs arL, arR
>
> gaL = 0
> gaR = 0
> endin
>
> </CsInstruments>
> <CsScore>
>
> i 2 0 12.5 66 146.8324034 1
> i 1 0 12.5 66 293.6648069 295.5764943 1
> i 2 11.25 12.5 62 110.0000146 1
> i 1 11.25 12.5 62 220.0000292 223.8447647 1
> i 2 22.5 17.5 68 146.8324034 1
> i 1 22.5 17.5 68 293.6648069 295.8953963 1
> i 2 38.25 12.5 64 110.0000146 1
> i 1 38.25 12.5 64 220.0000292 218.4389075 1
> i 1 0 3.125 63 4698.63691 4682.37302 1.2
> i 1 2 3.125 63 4698.63691 4682.37302 1.2
> i 2 3 3.125 63 4698.63691 0.707
> i 1 3.125 3.125 73 1174.659227 1158.960547 1.2
> i 1 5.125 3.125 73 1174.659227 1158.960547 1.2
> i 2 6.125 3.125 73 1174.659227 0.707
> i 1 6.25 3.125 73 18794.54764 19018.31111 1.2
> i 1 8.25 3.125 73 18794.54764 19018.31111 1.2
> i 2 9.25 3.125 73 18794.54764 0.707
> i 1 9.375 3.125 77 440.0000584 437.7919812 1.2
> i 1 11.375 3.125 77 440.0000584 437.7919812 1.2
> i 2 12.375 3.125 77 440.0000584 0.707
> i 1 11.25 3.125 69 2217.461342 2177.813162 1.2
> i 1 13.25 3.125 69 2217.461342 2177.813162 1.2
> i 2 14.25 3.125 69 2217.461342 0.707
> i 1 14.375 3.125 65 659.2552013 658.4410117 1.2
> i 1 16.375 3.125 65 659.2552013 658.4410117 1.2
> i 2 17.375 3.125 65 659.2552013 0.707
> i 1 17.5 3.125 75 3520.000467 3590.074417 1.2
> i 1 19.5 3.125 75 3520.000467 3590.074417 1.2
> i 2 20.5 3.125 75 3520.000467 0.707
> i 1 20.625 3.125 65 329.6276006 324.5225453 1.2
> i 1 22.625 3.125 65 329.6276006 324.5225453 1.2
> i 2 23.625 3.125 65 329.6276006 0.707
> i 1 22.5 4.375 65 880.0001167 871.1593662 1.2
> i 1 24.5 4.375 65 880.0001167 871.1593662 1.2
> i 2 25.5 4.375 65 880.0001167 0.707
> i 1 26.875 4.375 77 880.0001167 883.7269655 1.2
> i 1 28.875 4.375 77 880.0001167 883.7269655 1.2
> i 2 29.875 4.375 77 880.0001167 0.707
> i 1 31.25 4.375 66 28160.00373 27669.94729 1.2
> i 1 33.25 4.375 66 28160.00373 27669.94729 1.2
> i 2 34.25 4.375 66 28160.00373 0.707
> i 1 35.625 4.375 72 440.0000584 432.7571566 1.2
> i 1 37.625 4.375 72 440.0000584 432.7571566 1.2
> i 2 38.625 4.375 72 440.0000584 0.707
> i 1 38.25 3.125 72 659.2552013 659.6548413 1.2
> i 1 40.25 3.125 72 659.2552013 659.6548413 1.2
> i 2 41.25 3.125 72 659.2552013 0.707
> i 1 41.375 3.125 77 329.6276006 331.7424869 1.2
> i 1 43.375 3.125 77 329.6276006 331.7424869 1.2
> i 2 44.375 3.125 77 329.6276006 0.707
> i 1 44.5 3.125 75 17739.69074 17729.69946 1.2
> i 1 46.5 3.125 75 17739.69074 17729.69946 1.2
> i 2 47.5 3.125 75 17739.69074 0.707
> i 1 47.625 3.125 65 554.3653355 556.6539646 1.2
> i 1 49.625 3.125 65 554.3653355 556.6539646 1.2
> i 2 50.625 3.125 65 554.3653355 0.707
> i 94 0 58.75 1 0.25 0.5
> i 100 0 58.75 0.6 0.7
>
> </CsScore>
> </CsoundSynthesizer>
>
> --
> View this message in context: http://www.nabble.com/Dc-offset-and-laziness-...-tp24231273p24231273.html
> Sent from the Csound - General mailing list archive at Nabble.com.
>
>
>
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