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<div class="refentry" title="partikkelsync">
<a id="partikkelsync"></a>
<div class="titlepage"></div>
<a id="IndexPartikkelsync" class="indexterm"></a>
<div class="refnamediv">
<h2>
<span class="refentrytitle">partikkelsync</span>
</h2>
<p>partikkelsync — Outputs <span class="emphasis"><em>partikkel</em></span>'s grain
scheduler clock pulse and phase to synchronize several instances of the <span class="emphasis"><em>partikkel</em></span>
opcode to the same clock source.
</p>
</div>
<div class="refsect1" title="Description">
<a id="idp35481480"></a>
<h2>Description</h2>
<p>
<span class="emphasis"><em>partikkelsync</em></span> is an opcode for outputting <a class="link" href="partikkel.html" title="partikkel"><em class="citetitle">partikkel</em></a>'s grain scheduler clock pulse and phase. <span class="emphasis"><em>partikkelsync</em></span>'s output can be used to synchronize other instances of the <a class="link" href="partikkel.html" title="partikkel"><em class="citetitle">partikkel</em></a> opcode to the same clock.
</p>
</div>
<div class="refsect1" title="Syntax">
<a id="idp35517672"></a>
<h2>Syntax</h2>
<pre class="synopsis">async [,aphase] <span class="command"><strong>partikkelsync</strong></span> iopcode_id</pre>
</div>
<div class="refsect1" title="Initialization">
<a id="idp35518800"></a>
<h2>Initialization</h2>
<p>
<span class="emphasis"><em>iopcode_id</em></span> -- the opcode id, linking an
instance of <a class="link" href="partikkel.html" title="partikkel"><em class="citetitle">partikkel</em></a> to an instance of <span class="emphasis"><em>partikkelsync</em></span>.
</p>
</div>
<div class="refsect1" title="Performance">
<a id="idp35520384"></a>
<h2>Performance</h2>
<p>
<span class="emphasis"><em>async</em></span> -- trigger pulse signal.
Outputs trigger pulses synchronized to a <span class="emphasis"><em>partikkel</em></span> opcode's grain scheduler clock.
One trigger pulse is generated for each grain started in the <span class="emphasis"><em>partikkel</em></span> opcode with the same <span class="emphasis"><em>opcode_id</em></span>.
The normal usage would be to send this signal to another <span class="emphasis"><em>partikkel</em></span> opcode's <span class="emphasis"><em>async</em></span> input to
synchronize several instances of <span class="emphasis"><em>partikkel</em></span>.
</p>
<p>
<span class="emphasis"><em>aphase</em></span> -- clock phase.
Outputs a linear ramping phase signal. Can be used e.g. for softsynchronization, or just as a phase generator ala <span class="emphasis"><em>phasor</em></span>.
</p>
</div>
<div class="refsect1" title="Example">
<a id="idp35523584"></a>
<h2>Example</h2>
<p>
Here is an example of the partikkelsync opcodes. It uses the file <a class="ulink" href="examples/partikkelsync.csd" target="_top"><em class="citetitle">partikkelsync.csd</em></a>.
</p>
<div class="example">
<a id="idp35524576"></a>
<p class="title">
<strong>Example 569. Example with soft sync of two partikkel generators.</strong>
</p>
<div class="example-contents">
<p>See the sections <a class="link" href="UsingRealTime.html" title="Real-Time Audio"><em class="citetitle">Real-time Audio</em></a> and <a class="link" href="CommandFlags.html" title="Csound command line"><em class="citetitle">Command Line Flags</em></a> for more information on using command line flags.</p>
<pre class="programlisting">
<span class="csdtag"><CsoundSynthesizer></span>
<span class="csdtag"><CsOptions></span>
<span class="comment">; Select audio/midi flags here according to platform</span>
<span class="comment">; Audio out </span>
-odac <span class="comment">;;;RT audio </span>
<span class="comment">; For Non-realtime ouput leave only the line below:</span>
<span class="comment">; -o partikkel_softsync.wav -W ;;; for file output any platform</span>
<span class="csdtag"></CsOptions></span>
<span class="csdtag"><CsInstruments></span>
<span class="ohdr">sr</span> <span class="op">=</span> 44100
<span class="ohdr">ksmps</span> <span class="op">=</span> 20
<span class="ohdr">nchnls</span> <span class="op">=</span> 2
<span class="comment">; Example by Oeyvind Brandtsegg 2007, revised 2008</span>
giSine <span class="ohdr">ftgen</span> 0, 0, 65537, 10, 1
giCosine <span class="ohdr">ftgen</span> 0, 0, 8193, 9, 1, 1, 90
giSigmoRise <span class="ohdr">ftgen</span> 0, 0, 8193, 19, 0.5, 1, 270, 1 <span class="comment">; rising sigmoid </span>
giSigmoFall <span class="ohdr">ftgen</span> 0, 0, 8193, 19, 0.5, 1, 90, 1 <span class="comment">; falling sigmoid </span>
<span class="comment">; *************************************************</span>
<span class="comment">; example of soft synchronization of two partikkel instances</span>
<span class="comment">; *************************************************</span>
<span class="oblock">instr</span> 1
<span class="op">/</span><span class="op">*</span>score parameters<span class="op">*</span><span class="op">/</span>
igrainrate <span class="op">=</span> p4 <span class="comment">; grain rate</span>
igrainsize <span class="op">=</span> p5 <span class="comment">; grain size in ms</span>
igrainFreq <span class="op">=</span> p6 <span class="comment">; fundamental frequency of source waveform</span>
iosc2Dev <span class="op">=</span> p7 <span class="comment">; partikkel instance 2 grain rate deviation factor</span>
iMaxSync <span class="op">=</span> p8 <span class="comment">; max soft sync amount (increasing to this value during length of note)</span>
<span class="op">/</span><span class="op">*</span>overall envelope<span class="op">*</span><span class="op">/</span>
iattack <span class="op">=</span> 0.001
idecay <span class="op">=</span> 0.2
isustain <span class="op">=</span> 0.7
irelease <span class="op">=</span> 0.2
amp <span class="opc">linsegr</span> 0, iattack, 1, idecay, isustain, 1, isustain, irelease, 0
kgrainfreq <span class="op">=</span> igrainrate <span class="comment">; grains per second</span>
kdistribution <span class="op">=</span> 0 <span class="comment">; periodic grain distribution</span>
idisttab <span class="op">=</span> <span class="op">-</span>1 <span class="comment">; (default) flat distribution used</span>
<span class="comment">; for grain distribution</span>
async <span class="op">=</span> 0 <span class="comment">; no sync input</span>
kenv2amt <span class="op">=</span> 0 <span class="comment">; no secondary enveloping</span>
ienv2tab <span class="op">=</span> <span class="op">-</span>1 <span class="comment">; default secondary envelope (flat)</span>
ienv_attack <span class="op">=</span> giSigmoRise <span class="comment">; default attack envelope (flat)</span>
ienv_decay <span class="op">=</span> giSigmoFall <span class="comment">; default decay envelope (flat)</span>
ksustain_amount <span class="op">=</span> 0.3 <span class="comment">; time (in fraction of grain dur) at</span>
<span class="comment">; sustain level for each grain</span>
ka_d_ratio <span class="op">=</span> 0.2 <span class="comment">; balance between attack and decay time</span>
kduration <span class="op">=</span> igrainsize <span class="comment">; set grain duration in ms</span>
kamp <span class="op">=</span> 0.2<span class="op">*</span><span class="ohdr">0dbfs</span> <span class="comment">; amp</span>
igainmasks <span class="op">=</span> <span class="op">-</span>1 <span class="comment">; (default) no gain masking</span>
kwavfreq <span class="op">=</span> igrainFreq <span class="comment">; fundamental frequency of source waveform</span>
ksweepshape <span class="op">=</span> 0 <span class="comment">; shape of frequency sweep (0=no sweep)</span>
iwavfreqstarttab <span class="op">=</span> <span class="op">-</span>1 <span class="comment">; default frequency sweep start</span>
<span class="comment">; (value in table = 1, which give</span>
<span class="comment">; no frequency modification)</span>
iwavfreqendtab <span class="op">=</span> <span class="op">-</span>1 <span class="comment">; default frequency sweep end</span>
<span class="comment">; (value in table = 1, which give</span>
<span class="comment">; no frequency modification)</span>
awavfm <span class="op">=</span> 0 <span class="comment">; no FM input</span>
ifmamptab <span class="op">=</span> <span class="op">-</span>1 <span class="comment">; default FM scaling (=1)</span>
kfmenv <span class="op">=</span> <span class="op">-</span>1 <span class="comment">; default FM envelope (flat)</span>
icosine <span class="op">=</span> giCosine <span class="comment">; cosine ftable</span>
kTrainCps <span class="op">=</span> kgrainfreq <span class="comment">; set trainlet cps equal to grain</span>
<span class="comment">; rate for single-cycle trainlet in</span>
<span class="comment">; each grain</span>
knumpartials <span class="op">=</span> 3 <span class="comment">; number of partials in trainlet</span>
kchroma <span class="op">=</span> 1 <span class="comment">; balance of partials in trainlet</span>
ichannelmasks <span class="op">=</span> <span class="op">-</span>1 <span class="comment">; (default) no channel masking,</span>
<span class="comment">; all grains to output 1</span>
krandommask <span class="op">=</span> 0 <span class="comment">; no random grain masking</span>
kwaveform1 <span class="op">=</span> giSine <span class="comment">; source waveforms</span>
kwaveform2 <span class="op">=</span> giSine <span class="comment">;</span>
kwaveform3 <span class="op">=</span> giSine <span class="comment">;</span>
kwaveform4 <span class="op">=</span> giSine <span class="comment">;</span>
iwaveamptab <span class="op">=</span> <span class="op">-</span>1 <span class="comment">; mix of 4 source waveforms and</span>
<span class="comment">; trainlets (set to default)</span>
asamplepos1 <span class="op">=</span> 0 <span class="comment">; phase offset for reading source waveform</span>
asamplepos2 <span class="op">=</span> 0 <span class="comment">;</span>
asamplepos3 <span class="op">=</span> 0 <span class="comment">;</span>
asamplepos4 <span class="op">=</span> 0 <span class="comment">;</span>
kwavekey1 <span class="op">=</span> 1 <span class="comment">; original key for source waveform</span>
kwavekey2 <span class="op">=</span> 1 <span class="comment">;</span>
kwavekey3 <span class="op">=</span> 1 <span class="comment">;</span>
kwavekey4 <span class="op">=</span> 1 <span class="comment">;</span>
imax_grains <span class="op">=</span> 100 <span class="comment">; max grains per k period</span>
iopcode_id <span class="op">=</span> 1 <span class="comment">; id of opcode, linking partikkel</span>
<span class="comment">; to partikkelsync</span>
a1 <span class="opc">partikkel</span> 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 <span class="opc">partikkelsync</span> iopcode_id <span class="comment">; clock pulse output of the </span>
<span class="comment">; partikkel instance above</span>
ksyncGravity <span class="opc">line</span> 0, p3, iMaxSync <span class="comment">; strength of synchronization</span>
aphase2 <span class="opc">init</span> 0
asyncPolarity <span class="opc">limit</span> (<span class="opc">int</span>(aphase2<span class="op">*</span>2)<span class="op">*</span>2)<span class="op">-</span>1, <span class="op">-</span>1, 1
<span class="comment">; use the phase of partikkelsync instance 2 to find sync </span>
<span class="comment">; polarity for partikkel instance 2.</span>
<span class="comment">; If the phase of instance 2 is less than 0.5, we want to</span>
<span class="comment">; nudge it down when synchronizing,</span>
<span class="comment">; and if the phase is > 0.5 we want to nudge it upwards.</span>
async1 <span class="op">=</span> async1<span class="op">*</span>ksyncGravity<span class="op">*</span>asyncPolarity <span class="comment">; prepare sync signal</span>
<span class="comment">; with polarity and strength</span>
kgrainfreq2 <span class="op">=</span> igrainrate <span class="op">*</span> iosc2Dev <span class="comment">; grains per second for second partikkel instance</span>
iopcode_id2 <span class="op">=</span> 2
a2 <span class="opc">partikkel</span> 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 <span class="opc">partikkelsync</span> iopcode_id2
<span class="comment">; clock pulse and phase </span>
<span class="comment">; output of the partikkel instance above,</span>
<span class="comment">; we will only use the phase</span>
<span class="opc">outs</span> a1<span class="op">*</span>amp, a2<span class="op">*</span>amp
<span class="oblock">endin</span>
<span class="csdtag"></CsInstruments></span>
<span class="csdtag"><CsScore></span>
/*score parameters
<span class="stamnt">i</span>gra<span class="stamnt">i</span>nrate = p4 <span class="comment">; grain rate</span>
<span class="stamnt">i</span>gra<span class="stamnt">i</span>ns<span class="stamnt">i</span>ze = p5 <span class="comment">; grain size in ms</span>
<span class="stamnt">i</span>gra<span class="stamnt">i</span>nFreq = p6 <span class="comment">; frequency of source wave within grain</span>
<span class="stamnt">i</span>osc2Dev = p7 <span class="comment">; partikkel instance 2 grain rate deviation factor</span>
<span class="stamnt">i</span>MaxSync = p8 <span class="comment">; max soft sync amount (increasing to this value during length of note)</span>
*/
<span class="comment">; GrRate GrSize GrFund Osc2Dev MaxSync</span>
<span class="stamnt">i</span>1 0 10 2 20 880 1.3 0.3
<span class="stamnt">s</span>
<span class="stamnt">i</span>1 0 10 5 20 440 0.8 0.3
<span class="stamnt">s</span>
<span class="stamnt">i</span>1 0 6 55 15 660 1.8 0.45
<span class="stamnt">s</span>
<span class="stamnt">i</span>1 0 6 110 10 440 0.6 0.6
<span class="stamnt">s</span>
<span class="stamnt">i</span>1 0 6 220 3 660 2.6 0.45
<span class="stamnt">s</span>
<span class="stamnt">i</span>1 0 6 220 3 660 2.1 0.45
<span class="stamnt">s</span>
<span class="stamnt">i</span>1 0 6 440 3 660 0.8 0.22
<span class="stamnt">s</span>
<span class="stamnt">e</span>
<span class="stamnt">e</span>
<span class="csdtag"></CsScore></span>
<span class="csdtag"></CsoundSynthesizer></span>
</pre>
</div>
</div>
<p><br class="example-break" />
</p>
</div>
<div class="refsect1" title="See Also">
<a id="idp35526872"></a>
<h2>See Also</h2>
<p><a class="link" href="partikkel.html" title="partikkel"><em class="citetitle">partikkel</em></a>
</p>
</div>
<div class="refsect1" title="Credits">
<a id="idp35527824"></a>
<h2>Credits</h2>
<p>
</p>
<table border="0" summary="Simple list" class="simplelist">
<tr>
<td>Author: Thom Johansen</td>
</tr>
<tr>
<td>Author: Torgeir Strand Henriksen</td>
</tr>
<tr>
<td>Author: Øyvind Brandtsegg</td>
</tr>
<tr>
<td>April 2007</td>
</tr>
</table>
<p>
</p>
<p>New in version 5.06</p>
<p>
</p>
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