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<h2>
<span class="refentrytitle">delayr</span>
</h2>
<p>delayr —
Reads from an automatically established digital delay line.
</p>
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<div class="refsect1">
<a id="idm281472942576920"></a>
<h2>Description</h2>
<p>
Reads from an automatically established digital delay line.
</p>
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<div class="refsect1">
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<h2>Syntax</h2>
<pre class="synopsis">ares <span class="command"><strong>delayr</strong></span> idlt [, iskip]</pre>
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<div class="refsect1">
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<h2>Initialization</h2>
<p>
<span class="emphasis"><em>idlt</em></span> -- requested delay time in seconds. This can be as large as available memory will permit. The space required for n seconds of delay is 4n * <span class="emphasis"><em>sr</em></span> bytes. It is allocated at the time the instrument is first initialized, and returned to the pool at the end of a score section.
</p>
<p>
<span class="emphasis"><em>iskip</em></span> (optional, default=0) -- initial disposition of delay-loop data space (see <a class="link" href="reson.html" title="reson"><em class="citetitle">reson</em></a>). The default value is 0.
</p>
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<div class="refsect1">
<a id="idm281472942506344"></a>
<h2>Performance</h2>
<p>
<span class="emphasis"><em>delayr</em></span> reads from an automatically established digital delay line, in which the signal retrieved has been resident for <span class="emphasis"><em>idlt</em></span> seconds. This unit must be paired with and precede an accompanying <a class="link" href="delayw.html" title="delayw"><em class="citetitle">delayw</em></a> unit. Any other Csound statements can intervene.
</p>
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<div class="refsect1">
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<h2>Examples</h2>
<p>
Here is an example of the delayr opcode. It uses the file <a class="ulink" href="examples/delayr.csd" target="_top"><em class="citetitle">delayr.csd</em></a>.
</p>
<div class="example">
<a id="idm281472942501272"></a>
<p class="title">
<strong>Example 194. Example of the delayr 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="idm281472775359416"></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 delayr.wav -W ;;; for file output any platform</span>
<span class="nt"></CsOptions></span>
<span class="nt"><CsInstruments></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>
ga<span class="n">sig</span> <span class="nb">init</span> <span class="mi">0</span>
gi<span class="n">del</span> <span class="o">=</span> <span class="mi">1</span> <span class="c1">;delay time in seconds</span>
<span class="kd">instr</span> <span class="nf">1</span>
a<span class="n">in</span> <span class="nb">pluck</span> <span class="mf">.7</span><span class="p">,</span> <span class="mi">440</span><span class="p">,</span> <span class="mi">1000</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">1</span>
<span class="nb">outs</span> a<span class="n">in</span><span class="p">,</span> a<span class="n">in</span>
<span class="nb">vincr</span> ga<span class="n">sig</span><span class="p">,</span> a<span class="n">in</span> <span class="c1">;send to global delay</span>
<span class="kd">endin</span>
<span class="kd">instr</span> <span class="nf">2</span>
i<span class="n">feedback</span> <span class="o">=</span> <span class="nb">p4</span>
a<span class="n">buf2</span> <span class="nb">delayr</span> gi<span class="n">del</span>
a<span class="n">delL</span> <span class="nb">deltap</span> <span class="mf">.4</span> <span class="c1">;first tap (on left channel)</span>
a<span class="n">delM</span> <span class="nb">deltap</span> <span class="mi">1</span> <span class="c1">;second tap (on middle channel)</span>
<span class="nb">delayw</span> ga<span class="n">sig</span> <span class="o">+</span> <span class="p">(</span>a<span class="n">delL</span> <span class="o">*</span> i<span class="n">feedback</span><span class="p">)</span>
a<span class="n">buf3</span> <span class="nb">delayr</span> gi<span class="n">del</span>
k<span class="n">del</span> <span class="nb">line</span> <span class="mi">1</span><span class="p">,</span> <span class="nb">p3</span><span class="p">,</span> <span class="mf">.01</span> <span class="c1">;vary delay time</span>
a<span class="n">delR</span> <span class="nb">deltap</span> <span class="mf">.65</span> <span class="o">*</span> k<span class="n">del</span> <span class="c1">;one pitch changing tap (on the right chn.)</span>
<span class="nb">delayw</span> ga<span class="n">sig</span> <span class="o">+</span> <span class="p">(</span>a<span class="n">delR</span> <span class="o">*</span> i<span class="n">feedback</span><span class="p">)</span>
<span class="c1">;make a mix of all deayed signals </span>
<span class="nb">outs</span> a<span class="n">delL</span> <span class="o">+</span> a<span class="n">delM</span><span class="p">,</span> a<span class="n">delR</span> <span class="o">+</span> a<span class="n">delM</span>
<span class="nb">clear</span> ga<span class="n">sig</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">1</span>
<span class="nb">i</span> <span class="mi">1</span> <span class="mi">3</span> <span class="mi">1</span>
<span class="nb">i</span> <span class="mi">2</span> <span class="mi">0</span> <span class="mi">3</span> <span class="mi">0</span> <span class="c1">;no feedback</span>
<span class="nb">i</span> <span class="mi">2</span> <span class="mi">3</span> <span class="mi">8</span> <span class="mf">.8</span> <span class="c1">;lots of feedback</span>
<span class="nb">e</span>
<span class="nt"></CsScore></span>
<span class="nt"></CsoundSynthesizer></span>
</pre>
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<p><br class="example-break" />
</p>
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<div class="refsect1">
<a id="idm281472942496936"></a>
<h2>See Also</h2>
<p>
<a class="link" href="delay.html" title="delay"><em class="citetitle">delay</em></a>,
<a class="link" href="delay1.html" title="delay1"><em class="citetitle">delay1</em></a>,
<a class="link" href="delayw.html" title="delayw"><em class="citetitle">delayw</em></a>
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