partikkelsync — Outputs partikkel's grain scheduler clock pulse and phase to synchronize several instances of the partikkel opcode to the same clock source.
partikkelsync is an opcode for outputting partikkel's grain scheduler clock pulse and phase. partikkelsync's output can be used to synchronize other instances of the partikkel opcode to the same clock.
iopcode_id -- the opcode id, linking an instance of partikkel to an instance of partikkelsync.
async -- trigger pulse signal. Outputs trigger pulses synchronized to a partikkel opcode's grain scheduler clock. One trigger pulse is generated for each grain started in the partikkel opcode with the same opcode_id. The normal usage would be to send this signal to another partikkel opcode's async input to synchronize several instances of partikkel.
aphase -- clock phase. Outputs a linear ramping phase signal. Can be used e.g. for softsynchronization, or just as a phase generator ala phasor.
Here is an example of the partikkelsync opcodes. It uses the file partikkelsync.csd.
Example 739. Example with soft sync of two partikkel generators.
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 ; Audio out -odac ;;;RT audio ; For Non-realtime ouput leave only the line below: ; -o partikkel_softsync.wav -W ;;; for file output any platform </CsOptions> <CsInstruments> sr = 44100 ksmps = 20 nchnls = 2 ; Example by Oeyvind Brandtsegg 2007, revised 2008 giSine ftgen 0, 0, 65537, 10, 1 giCosine ftgen 0, 0, 8193, 9, 1, 1, 90 giSigmoRise ftgen 0, 0, 8193, 19, 0.5, 1, 270, 1 ; rising sigmoid giSigmoFall ftgen 0, 0, 8193, 19, 0.5, 1, 90, 1 ; falling sigmoid ; ************************************************* ; example of soft synchronization of two partikkel instances ; ************************************************* instr 1 /*score parameters*/ igrainrate = p4 ; grain rate igrainsize = p5 ; grain size in ms igrainFreq = p6 ; fundamental frequency of source waveform iosc2Dev = p7 ; partikkel instance 2 grain rate deviation factor iMaxSync = p8 ; max soft sync amount (increasing to this value during length of note) /*overall envelope*/ iattack = 0.001 idecay = 0.2 isustain = 0.7 irelease = 0.2 amp linsegr 0, iattack, 1, idecay, isustain, 1, isustain, irelease, 0 kgrainfreq = igrainrate ; grains per second kdistribution = 0 ; periodic grain distribution idisttab = -1 ; (default) flat distribution used ; for grain distribution async = 0 ; no sync input kenv2amt = 0 ; no secondary enveloping ienv2tab = -1 ; default secondary envelope (flat) ienv_attack = giSigmoRise ; default attack envelope (flat) ienv_decay = giSigmoFall ; default decay envelope (flat) ksustain_amount = 0.3 ; time (in fraction of grain dur) at ; sustain level for each grain ka_d_ratio = 0.2 ; balance between attack and decay time kduration = igrainsize ; set grain duration in ms kamp = 0.2*0dbfs ; amp igainmasks = -1 ; (default) no gain masking kwavfreq = igrainFreq ; fundamental frequency of source waveform ksweepshape = 0 ; shape of frequency sweep (0=no sweep) iwavfreqstarttab = -1 ; default frequency sweep start ; (value in table = 1, which give ; no frequency modification) iwavfreqendtab = -1 ; default frequency sweep end ; (value in table = 1, which give ; no frequency modification) awavfm = 0 ; no FM input ifmamptab = -1 ; default FM scaling (=1) kfmenv = -1 ; default FM envelope (flat) icosine = giCosine ; cosine ftable kTrainCps = kgrainfreq ; set trainlet cps equal to grain ; rate for single-cycle trainlet in ; each grain knumpartials = 3 ; number of partials in trainlet kchroma = 1 ; balance of partials in trainlet ichannelmasks = -1 ; (default) no channel masking, ; all grains to output 1 krandommask = 0 ; no random grain masking kwaveform1 = giSine ; source waveforms kwaveform2 = giSine ; kwaveform3 = giSine ; kwaveform4 = giSine ; iwaveamptab = -1 ; mix of 4 source waveforms and ; trainlets (set to default) asamplepos1 = 0 ; phase offset for reading source waveform asamplepos2 = 0 ; asamplepos3 = 0 ; asamplepos4 = 0 ; kwavekey1 = 1 ; original key for source waveform kwavekey2 = 1 ; kwavekey3 = 1 ; kwavekey4 = 1 ; imax_grains = 100 ; max grains per k period iopcode_id = 1 ; id of opcode, linking partikkel ; to partikkelsync a1 partikkel kgrainfreq, kdistribution, idisttab, async, kenv2amt, \ ienv2tab,ienv_attack, ienv_decay, ksustain_amount, ka_d_ratio, \ kduration, kamp, igainmasks, kwavfreq, ksweepshape, \ iwavfreqstarttab, iwavfreqendtab, awavfm, ifmamptab, kfmenv, \ icosine, kTrainCps, knumpartials, kchroma, ichannelmasks, \ krandommask, kwaveform1, kwaveform2, kwaveform3, kwaveform4, \ iwaveamptab, asamplepos1, asamplepos2, asamplepos3, asamplepos4, \ kwavekey1, kwavekey2, kwavekey3, kwavekey4, imax_grains, iopcode_id async1 partikkelsync iopcode_id ; clock pulse output of the ; partikkel instance above ksyncGravity line 0, p3, iMaxSync ; strength of synchronization aphase2 init 0 asyncPolarity limit (int(aphase2*2)*2)-1, -1, 1 ; use the phase of partikkelsync instance 2 to find sync ; polarity for partikkel instance 2. ; If the phase of instance 2 is less than 0.5, we want to ; nudge it down when synchronizing, ; and if the phase is > 0.5 we want to nudge it upwards. async1 = async1*ksyncGravity*asyncPolarity ; prepare sync signal ; with polarity and strength kgrainfreq2 = igrainrate * iosc2Dev ; grains per second for second partikkel instance iopcode_id2 = 2 a2 partikkel kgrainfreq2, kdistribution, idisttab, async1, kenv2amt, \ ienv2tab, ienv_attack, ienv_decay, ksustain_amount, ka_d_ratio, \ kduration, kamp, igainmasks, kwavfreq, ksweepshape, \ iwavfreqstarttab, iwavfreqendtab, awavfm, ifmamptab, kfmenv, \ icosine, kTrainCps, knumpartials, kchroma, ichannelmasks, \ krandommask, kwaveform1, kwaveform2, kwaveform3, kwaveform4, \ iwaveamptab, asamplepos1, asamplepos2, asamplepos3, \ asamplepos4, kwavekey1, kwavekey2, kwavekey3, kwavekey4, \ imax_grains, iopcode_id2 async2, aphase2 partikkelsync iopcode_id2 ; clock pulse and phase ; output of the partikkel instance above, ; we will only use the phase outs a1*amp, a2*amp endin </CsInstruments> <CsScore> /*score parameters igrainrate = p4 ; grain rate igrainsize = p5 ; grain size in ms igrainFreq = p6 ; frequency of source wave within grain iosc2Dev = p7 ; partikkel instance 2 grain rate deviation factor iMaxSync = p8 ; max soft sync amount (increasing to this value during length of note) */ ; GrRate GrSize GrFund Osc2Dev MaxSync i1 0 10 2 20 880 1.3 0.3 s i1 0 10 5 20 440 0.8 0.3 s i1 0 6 55 15 660 1.8 0.45 s i1 0 6 110 10 440 0.6 0.6 s i1 0 6 220 3 660 2.6 0.45 s i1 0 6 220 3 660 2.1 0.45 s i1 0 6 440 3 660 0.8 0.22 s e e </CsScore> </CsoundSynthesizer>