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<a id="IndexDelayk" class="indexterm"></a>
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<h2>
<span class="refentrytitle">delayk</span>
</h2>
<p>delayk —
Delays an input signal by some time interval.
</p>
</div>
<div class="refsect1">
<a id="idm281472942630056"></a>
<h2>Description</h2>
<p>
k-rate delay opcodes
</p>
</div>
<div class="refsect1">
<a id="idm281472942565928"></a>
<h2>Syntax</h2>
<pre class="synopsis">kr <span class="command"><strong>delayk </strong></span> ksig, idel[, imode]</pre>
<pre class="synopsis">kr <span class="command"><strong>vdel_k </strong></span> ksig, kdel, imdel[, imode]</pre>
</div>
<div class="refsect1">
<a id="idm281472942562312"></a>
<h2>Initialization</h2>
<p>
<span class="emphasis"><em>idel</em></span> -- delay time (in seconds) for
delayk. It is rounded to the nearest integer multiple of a k-cycle
(i.e. 1/kr).
</p>
<p>
<span class="emphasis"><em>imode</em></span> -- sum of 1 for skipping initialization
(e.g. in tied notes) and 2 for holding the first input value during the
initial delay, instead of outputting zero. This is mainly of use
when delaying envelopes that do not start at zero.
</p>
<p>
</p>
<div class="mediaobject">
<img src="images/delayk.png" />
</div>
<p>
</p>
<p>
<span class="emphasis"><em>imdel</em></span> -- maximum delay time for vdel_k, in seconds.
</p>
</div>
<div class="refsect1">
<a id="idm281472942556712"></a>
<h2>Performance</h2>
<p>
<span class="emphasis"><em>kr</em></span> -- the output signal. Note: neither of the
opcodes interpolate the output.
</p>
<p>
<span class="emphasis"><em>ksig</em></span> -- the input signal.
</p>
<p>
<span class="emphasis"><em>kdel</em></span> -- delay time (in seconds) for
vdel_k. It is rounded to the nearest integer multiple of a k-cycle
(i.e. 1/kr).
</p>
</div>
<div class="refsect1">
<a id="idm281472942553192"></a>
<h2>Examples</h2>
<p>
Here is an example of the delayk opcode. It uses the file <a class="ulink" href="examples/delayk.csd" target="_top"><em class="citetitle">delayk.csd</em></a>.
</p>
<div class="example">
<a id="idm281472942551336"></a>
<p class="title">
<strong>Example 193. Example of the delayk opcode.</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>
<div class="refsect1">
<a id="idm281472775437352"></a>
<pre class="programlisting">
<span class="nt"><CsoundSynthesizer></span>
<span class="nt"><CsOptions></span>
<span class="c1">; Select audio/midi flags here according to platform</span>
-odac <span class="c1">;;;RT audio out</span>
<span class="c1">;-iadc ;;;uncomment -iadc if RT audio input is needed too</span>
<span class="c1">; For Non-realtime ouput leave only the line below:</span>
<span class="c1">; -o delayk.wav -W ;;; for file output any platform</span>
<span class="nt"></CsOptions></span>
<span class="nt"><CsInstruments></span>
<span class="c1">;example shows "delayk" for fm index and </span>
<span class="c1">;a second "delayk" for panning</span>
<span class="vg">sr</span> <span class="o">=</span> <span class="mi">44100</span>
<span class="vg">ksmps</span> <span class="o">=</span> <span class="mi">32</span>
<span class="vg">nchnls</span> <span class="o">=</span> <span class="mi">2</span>
<span class="vg">0dbfs</span> <span class="o">=</span> <span class="mi">1</span>
gi<span class="n">sin</span> <span class="nb">ftgen</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">2</span><span class="o">^</span><span class="mi">10</span><span class="p">,</span> <span class="mi">10</span><span class="p">,</span> <span class="mi">1</span>
<span class="kd">instr</span> <span class="nf">1</span>
k<span class="n">env1</span> <span class="nb">transeg</span> <span class="mi">0</span><span class="p">,</span> <span class="mf">.02</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">1</span><span class="p">,</span> <span class="mf">3.98</span><span class="p">,</span> <span class="o">-</span><span class="mi">6</span><span class="p">,</span> <span class="mi">0</span> <span class="c1">;envelope</span>
k<span class="n">env2</span> <span class="nb">delayk</span> k<span class="n">env1</span><span class="p">,</span> <span class="mi">2</span> <span class="c1">;delayed by two seconds</span>
k<span class="n">indx</span> <span class="nb">expon</span> <span class="mi">5</span><span class="p">,</span> <span class="nb">p3</span><span class="p">,</span> <span class="mi">1</span> <span class="c1">;fm index decreasing over p3</span>
a<span class="n">sig</span> <span class="nb">foscili</span> <span class="mf">.6</span><span class="p">,</span> <span class="mi">400</span><span class="p">,</span> <span class="mi">1</span><span class="p">,</span> <span class="mi">11</span><span class="o">/</span><span class="mi">4</span><span class="p">,</span> k<span class="n">indx</span><span class="p">,</span> gi<span class="n">sin</span>
k<span class="n">pan1</span> <span class="nb">linseg</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">4</span><span class="p">,</span> <span class="mi">1</span> <span class="c1">;panning for first sound</span>
k<span class="n">pan2</span> <span class="nb">linseg</span> <span class="mi">1</span><span class="p">,</span> <span class="mi">4</span><span class="p">,</span> <span class="mi">0</span> <span class="c1">;panning for second sound ...</span>
k<span class="n">pan2</span> <span class="nb">delayk</span> k<span class="n">pan2</span><span class="p">,</span> <span class="mi">2</span> <span class="c1">;delayed by two seconds</span>
a<span class="n">1</span> <span class="o">=</span> a<span class="n">sig</span> <span class="o">*</span> k<span class="n">env1</span>
a<span class="n">2</span> <span class="o">=</span> a<span class="n">sig</span> <span class="o">*</span> k<span class="n">env2</span>
a<span class="n">L1</span><span class="p">,</span>a<span class="n">R1</span> <span class="nb">pan2</span> a<span class="n">1</span><span class="p">,</span> k<span class="n">pan1</span>
a<span class="n">L2</span><span class="p">,</span>a<span class="n">R2</span> <span class="nb">pan2</span> a<span class="n">2</span><span class="p">,</span> k<span class="n">pan2</span>
<span class="nb">outs</span> a<span class="n">L1</span><span class="o">+</span>a<span class="n">L2</span><span class="p">,</span> a<span class="n">R1</span><span class="o">+</span>a<span class="n">R2</span>
<span class="kd">endin</span>
<span class="nt"></CsInstruments></span>
<span class="nt"><CsScore></span>
<span class="nb">i</span> <span class="mi">1</span> <span class="mi">0</span> <span class="mi">6</span>
<span class="nb">e</span>
<span class="nt"></CsScore></span>
<span class="nt"></CsoundSynthesizer></span>
</pre>
</div>
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</div>
<p><br class="example-break" />
</p>
</div>
<div class="refsect1">
<a id="idm281472942547144"></a>
<h2>Credits</h2>
<p>Istvan Varga.</p>
</div>
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