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<h1 id="spatslib">spats.lib</h1>
<p>This library contains a collection of tools for sound spatialization.
Its official prefix is <code>sp</code>.</p>
<h4 id="references">References</h4>
<ul>
<li><a href="https://github.com/grame-cncm/faustlibraries/blob/master/spats.lib">https://github.com/grame-cncm/faustlibraries/blob/master/spats.lib</a></li>
</ul>
<hr />
<h3 id="sppanner"><code>(sp.)panner</code></h3>
<p>A simple linear stereo panner.
<code>panner</code> is a standard Faust function.</p>
<h4 id="usage">Usage</h4>
<pre><code>_ : panner(g) : _,_
</code></pre>
<p>Where:</p>
<ul>
<li><code>g</code>: the panning (0-1)</li>
</ul>
<hr />
<h3 id="spconstantpowerpan"><code>(sp.)constantPowerPan</code></h3>
<p>Apply the constant power pan rule to a stereo signal.
The channels are not respatialized. Their gains are simply
adjusted. A pan of 0 preserves the left channel and silences
the right channel. A pan of 1 has the opposite effect.
A pan value of 0.5 applies a gain of 0.5 to both channels. </p>
<h4 id="usage_1">Usage</h4>
<pre><code>_,_ : constantPowerPan(p) : _,_
</code></pre>
<p>Where:</p>
<ul>
<li><code>p</code>: the panning (0-1)</li>
</ul>
<hr />
<h3 id="spspat"><code>(sp.)spat</code></h3>
<p>GMEM SPAT: n-outputs spatializer.
<code>spat</code> is a standard Faust function.</p>
<h4 id="usage_2">Usage</h4>
<pre><code>_ : spat(N,r,d) : si.bus(N)
</code></pre>
<p>Where:</p>
<ul>
<li><code>N</code>: number of outputs (a constant numerical expression)</li>
<li><code>r</code>: rotation (between 0 et 1)</li>
<li><code>d</code>: distance of the source (between 0 et 1)</li>
</ul>
<hr />
<h3 id="spwfs"><code>(sp.)wfs</code></h3>
<p>Wave Field Synthesis algorithm for multiple sound sources.
Implementation generalized starting from Pierre Lecomte version. </p>
<h4 id="usage_3">Usage</h4>
<pre><code>wfs(xref, yref, zref, speakersDist, nSources, nSpeakers, inGain, xs, ys, zs) : si.bus(nSpeakers)
</code></pre>
<p>Where:</p>
<ul>
<li><code>xref</code>: x-coordinate of the reference listening point</li>
<li><code>yref</code>: y-coordinate of the reference listening point</li>
<li><code>zref</code>: z-coordinate of the reference listening point</li>
<li><code>speakersDist</code>: distance between speakers</li>
<li><code>nSources</code>: number of sound sources</li>
<li><code>nSpeakers</code>: number of speakers</li>
<li><code>inGain</code>: input gain (0-1) as a function of the source index</li>
<li><code>xs</code>: x-coordinate of the sound source as a function of the source index</li>
<li><code>ys</code>: y-coordinate of the sound source as a function of the source index</li>
<li><code>zs</code>: z-coordinate of the sound source as a function of the source index</li>
</ul>
<hr />
<h3 id="spwfs_ui"><code>(sp.)wfs_ui</code></h3>
<p>Wave Field Synthesis algorithm for multiple sound sources with a built-in UI.</p>
<h4 id="usage_4">Usage</h4>
<pre><code>wfs_ui(xref, yref, zref, speakersDist, nSources, nSpeaker) : si.bus(nSpeakers)
</code></pre>
<p>Where:</p>
<ul>
<li><code>xref</code>: x-coordinate of the reference listening point</li>
<li><code>yref</code>: y-coordinate of the reference listening point</li>
<li><code>zref</code>: z-coordinate of the reference listening point</li>
<li><code>speakersDist</code>: distance between speakers</li>
<li><code>nSources</code>: number of sound sources</li>
<li><code>nSpeakers</code>: number of speakers</li>
</ul>
<h4 id="example-test-program">Example test program</h4>
<pre><code>// Distance between speakers in meters
speakersDist = 0.0783;
// Reference listening point (central position for WFS)
xref = 0;
yref = 1;
zref = 0;
Spatialize 4 sound sources on 16 speakers
process = wfs_ui(xref,yref,zref,speakersDist,4,16);
</code></pre>
<hr />
<h3 id="spstereoize"><code>(sp.)stereoize</code></h3>
<p>Transform an arbitrary processor <code>p</code> into a stereo processor with 2 inputs
and 2 outputs.</p>
<h4 id="usage_5">Usage</h4>
<pre><code>_,_ : stereoize(p) : _,_
</code></pre>
<p>Where:</p>
<ul>
<li><code>p</code>: the arbitrary processor</li>
</ul></div>
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