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<div class="refentry" title="ATSaddnz">
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<h2>
<span class="refentrytitle">ATSaddnz</span>
</h2>
<p>ATSaddnz — uses the data from an ATS analysis file to perform noise resynthesis.
</p>
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<div class="refsect1" title="Description">
<a id="idp13852880"></a>
<h2>Description</h2>
<p>
<span class="emphasis"><em>ATSaddnz</em></span> reads from an ATS analysis file and uses the data to perform additive synthesis using a modified randi function.
</p>
</div>
<div class="refsect1" title="Syntax">
<a id="idp13853808"></a>
<h2>Syntax</h2>
<pre class="synopsis">ar <span class="command"><strong>ATSaddnz</strong></span> ktimepnt, iatsfile, ibands[, ibandoffset, ibandincr]</pre>
</div>
<div class="refsect1" title="Initialization">
<a id="idp13915184"></a>
<h2>Initialization</h2>
<p>
<span class="emphasis"><em>iatsfile</em></span> – the ATS number (n in ats.n) or the name in quotes of the analysis file made using <a class="ulink" href="http://www-ccrma.stanford.edu/~juan/ATS.html" target="_top"><em class="citetitle">ATS</em></a>.
</p>
<p><span class="emphasis"><em>ibands</em></span> – number of noise bands that will be used in the resynthesis (the noise has a maximum of 25 bands)
</p>
<p><span class="emphasis"><em>ibandoffset</em></span> (optional) – is the first noise band used (defaults to 0).
</p>
<p><span class="emphasis"><em>ibandincr</em></span> (optional) – sets an increment by which these synthesis opcodes counts up from <span class="emphasis"><em>ibandoffset</em></span> for ibins components in the re-synthesis (defaults to 1).
</p>
</div>
<div class="refsect1" title="Performance">
<a id="idp13918472"></a>
<h2>Performance</h2>
<p><span class="emphasis"><em>ktimepnt</em></span> – The time pointer in seconds used to index the ATS file. Used for <span class="emphasis"><em>ATSaddnz</em></span> exactly the same as for <a class="link" href="pvoc.html" title="pvoc"><em class="citetitle">pvoc</em></a> and <a class="link" href="ATSadd.html" title="ATSadd"><em class="citetitle">ATSadd</em></a>.</p>
<p><span class="emphasis"><em>ATSaddnz</em></span> and <a class="link" href="ATSadd.html" title="ATSadd"><em class="citetitle">ATSadd</em></a> are based on <a class="link" href="pvadd.html" title="pvadd"><em class="citetitle">pvadd</em></a> by Richard Karpen and use files created by Juan Pampin's ATS (<a class="ulink" href="http://www-ccrma.stanford.edu/~juan/ATS.html" target="_top"><em class="citetitle">Analysis - Transformation - Synthesis</em></a>).
</p>
<p><span class="emphasis"><em>ATSaddnz</em></span> also reads from an ATS file but it resynthesizes the noise from noise energy data contained in the ATS file. It uses a modified randi function to create band limited noise and modulates that with a cosine wave, to synthesize a user specified selection of frequency bands. Modulating the noise is required to put the band limited noise in the correct place in the frequency spectrum.
</p>
</div>
<div class="refsect1" title="Examples">
<a id="idp13923152"></a>
<h2>Examples</h2>
<pre class="programlisting"> ktime <span class="opc">line</span> 0, p3, 2.5
asig <span class="opc">ATSaddnz</span> ktime, "clarinet.ats", 25
</pre>
<p>In the example above we're synthesizing all 25 noise bands from the data contained in the ATS analysis file called "clarinet.ats".
</p>
</div>
<div class="refsect1" title="Examples">
<a id="idp13924992"></a>
<h2>Examples</h2>
<p>
Here is an another example of the ATSaddnz opcode. It uses the file <a class="ulink" href="examples/ATSaddnz.csd" target="_top"><em class="citetitle">ATSaddnz.csd</em></a>.
</p>
<div class="example">
<a id="idp13925984"></a>
<p class="title">
<strong>Example 56. Example of the ATSaddnz opcode.</strong>
</p>
<div class="example-contents">
<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>
-odac <span class="comment">;;;RT audio out</span>
<span class="comment">;-iadc ;;;uncomment -iadc for RT audio input is needed too</span>
<span class="comment">; For Non-realtime ouput leave only the line below:</span>
<span class="comment">; -o ATSaddnzwav -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> 32
<span class="ohdr">nchnls</span> <span class="op">=</span> 2
<span class="ohdr">0dbfs</span> <span class="op">=</span> 1
<span class="oblock">instr</span> 1 <span class="comment">; "beats.ats" is created by atsa</span>
ktime <span class="opc">line</span> 0, p3, 2
asig <span class="opc">ATSaddnz</span> ktime, "beats.ats", 1, 24
<span class="opc">outs</span> asig<span class="op">*</span>10, asig<span class="op">*</span>10 <span class="comment">;amplify</span>
<span class="oblock">endin</span>
<span class="csdtag"></CsInstruments></span>
<span class="csdtag"><CsScore></span>
<span class="stamnt">i</span> 1 0 2
<span class="stamnt">e</span>
<span class="csdtag"></CsScore></span>
<span class="csdtag"></CsoundSynthesizer></span>
</pre>
</div>
</div>
<p><br class="example-break" />
</p>
<p>Here we synthesize only the 25th noise band (<span class="emphasis"><em>ibandoffset</em></span> of 24 and <span class="emphasis"><em>ibands</em></span> of 1).
</p>
</div>
<div class="refsect1" title="See also">
<a id="idp13927664"></a>
<h2>See also</h2>
<p><a class="link" href="ATSread.html" title="ATSread"><em class="citetitle">ATSread</em></a>,
<a class="link" href="ATSreadnz.html" title="ATSreadnz"><em class="citetitle">ATSreadnz</em></a>,
<a class="link" href="ATSinfo.html" title="ATSinfo"><em class="citetitle">ATSinfo</em></a>,
<a class="link" href="ATSbufread.html" title="ATSbufread"><em class="citetitle">ATSbufread</em></a>,
<a class="link" href="ATScross.html" title="ATScross"><em class="citetitle">ATScross</em></a>,
<a class="link" href="ATSinterpread.html" title="ATSinterpread"><em class="citetitle">ATSinterpread</em></a>,
<a class="link" href="ATSpartialtap.html" title="ATSpartialtap"><em class="citetitle">ATSpartialtap</em></a>,
<a class="link" href="ATSaddnz.html" title="ATSaddnz"><em class="citetitle">ATSaddnz</em></a>,
<a class="link" href="ATSsinnoi.html" title="ATSsinnoi"><em class="citetitle">ATSsinnoi</em></a></p>
</div>
<div class="refsect1" title="Credits">
<a id="idp13932544"></a>
<h2>Credits</h2>
<p>
</p>
<table border="0" summary="Simple list" class="simplelist">
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<td>Author: Alex Norman</td>
</tr>
<tr>
<td>Seattle,Washington</td>
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<td>2004</td>
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