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<div class="refentry" title="ziw">
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<h2>
<span class="refentrytitle">ziw</span>
</h2>
<p>ziw —
Writes to a zk variable at i-rate without mixing.
</p>
</div>
<div class="refsect1" title="Description">
<a id="idp54831520"></a>
<h2>Description</h2>
<p>
Writes to a zk variable at i-rate without mixing.
</p>
</div>
<div class="refsect1" title="Syntax">
<a id="idp54856560"></a>
<h2>Syntax</h2>
<pre class="synopsis"><span class="command"><strong>ziw</strong></span> isig, indx</pre>
</div>
<div class="refsect1" title="Initialization">
<a id="idp54857520"></a>
<h2>Initialization</h2>
<p>
<span class="emphasis"><em>isig</em></span> -- initializes the value of the zk location.
</p>
<p>
<span class="emphasis"><em>indx</em></span> -- points to the zk or za location to which to write.
</p>
</div>
<div class="refsect1" title="Performance">
<a id="idp54859000"></a>
<h2>Performance</h2>
<p>
<span class="emphasis"><em>ziw</em></span> writes <span class="emphasis"><em>isig</em></span> into the zk variable specified by <span class="emphasis"><em>indx</em></span>.
</p>
<p>
These opcodes are fast, and always check that the index is within the range of zk or za space. If not, an error is reported, 0 is returned, and no writing takes place.
</p>
</div>
<div class="refsect1" title="Examples">
<a id="idp54860872"></a>
<h2>Examples</h2>
<p>
Here is an example of the ziw opcode. It uses the file <a class="ulink" href="examples/ziw.csd" target="_top"><em class="citetitle">ziw.csd</em></a>.
</p>
<div class="example">
<a id="idp54861848"></a>
<p class="title">
<strong>Example 1016. Example of the ziw 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>
<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 Audio in</span>
-odac -iadc <span class="comment">;;;RT audio I/O</span>
<span class="comment">; For Non-realtime ouput leave only the line below:</span>
<span class="comment">; -o ziw.wav -W ;;; for file output any platform</span>
<span class="csdtag"></CsOptions></span>
<span class="csdtag"><CsInstruments></span>
<span class="comment">; Initialize the global variables.</span>
<span class="ohdr">sr</span> <span class="op">=</span> 44100
<span class="ohdr">kr</span> <span class="op">=</span> 4410
<span class="ohdr">ksmps</span> <span class="op">=</span> 10
<span class="ohdr">nchnls</span> <span class="op">=</span> 1
<span class="comment">; Initialize the ZAK space.</span>
<span class="comment">; Create 1 a-rate variable and 1 k-rate variable.</span>
<span class="opc">zakinit</span> 1, 1
<span class="comment">; Instrument #1 -- a simple instrument.</span>
<span class="oblock">instr</span> 1
<span class="comment">; Set zk variable #1 to 64.182.</span>
<span class="opc">ziw</span> 64.182, 1
<span class="oblock">endin</span>
<span class="comment">; Instrument #2 -- prints out zk variable #1.</span>
<span class="oblock">instr</span> 2
<span class="comment">; Read zk variable #1 at i-rate.</span>
i1 <span class="opc">zir</span> 1
<span class="comment">; Print out the value of zk variable #1.</span>
<span class="opc">print</span> i1
<span class="oblock">endin</span>
<span class="csdtag"></CsInstruments></span>
<span class="csdtag"><CsScore></span>
<span class="comment">; Play Instrument #1 for one second.</span>
<span class="stamnt">i</span> 1 0 1
<span class="comment">; Play Instrument #2 for one second.</span>
<span class="stamnt">i</span> 2 0 1
<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="idp54864144"></a>
<h2>See Also</h2>
<p>
<a class="link" href="zaw.html" title="zaw"><em class="citetitle">zaw</em></a>,
<a class="link" href="zawm.html" title="zawm"><em class="citetitle">zawm</em></a>,
<a class="link" href="ziwm.html" title="ziwm"><em class="citetitle">ziwm</em></a>,
<a class="link" href="zkw.html" title="zkw"><em class="citetitle">zkw</em></a>,
<a class="link" href="zkwm.html" title="zkwm"><em class="citetitle">zkwm</em></a>
</p>
</div>
<div class="refsect1" title="Credits">
<a id="idp54867080"></a>
<h2>Credits</h2>
<p>
</p>
<table border="0" summary="Simple list" class="simplelist">
<tr>
<td>Author: Robin Whittle</td>
</tr>
<tr>
<td>Australia</td>
</tr>
<tr>
<td>May 1997</td>
</tr>
</table>
<p>
</p>
<p>New in version 3.45</p>
<p>Example written by Kevin Conder.</p>
</div>
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