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<section id="complex-oscs-py-complex-spectrum-oscillators">
<h1>01-complex-oscs.py - Complex spectrum oscillators.<a class="headerlink" href="#complex-oscs-py-complex-spectrum-oscillators" title="Permalink to this heading">¶</a></h1>
<p>This tutorial presents four objects of the library which are
useful to generate complex spectrums by means of synthesis.</p>
<p>Blit:
Impulse train generator with control over the number of harmonics.</p>
<p>RCOsc:
Aproximation of a RC circuit (a capacitor and a resistor in series).</p>
<p>SineLoop:
Sine wave oscillator with feedback.</p>
<p>SuperSaw:
Roland JP-8000 Supersaw emulator.</p>
<p>Use the “voice” slider of the window “Input interpolator” to
interpolate between the four waveforms. Each one have an LFO
applied to the argument that change the tone of the sound.</p>
<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="kn">from</span> <a class="sphinx-codeautolink-a" href="../../api/alphabetical.html#module-pyo" title="pyo"><span class="nn">pyo</span></a> <span class="kn">import</span> <span class="o">*</span>
<span class="n">s</span> <span class="o">=</span> <a class="sphinx-codeautolink-a" href="../../api/classes/server.html#pyo.Server" title="pyo.lib.server.Server"><span class="n">Server</span></a><span class="p">()</span><span class="o">.</span><span class="n">boot</span><span class="p">()</span>
<span class="c1"># Sets fundamental frequency.</span>
<span class="n">freq</span> <span class="o">=</span> <span class="mf">187.5</span>
<span class="c1"># Impulse train generator.</span>
<span class="n">lfo1</span> <span class="o">=</span> <a class="sphinx-codeautolink-a" href="../../api/classes/generators.html#pyo.Sine" title="pyo.lib.generators.Sine"><span class="n">Sine</span></a><span class="p">(</span><span class="mf">0.1</span><span class="p">)</span><span class="o">.</span><span class="n">range</span><span class="p">(</span><span class="mi">1</span><span class="p">,</span> <span class="mi">50</span><span class="p">)</span>
<a class="sphinx-codeautolink-a" href="../../api/classes/generators.html#pyo.Blit" title="pyo.lib.generators.Blit"><span class="n">osc1</span></a> <span class="o">=</span> <a class="sphinx-codeautolink-a" href="../../api/classes/generators.html#pyo.Blit" title="pyo.lib.generators.Blit"><span class="n">Blit</span></a><span class="p">(</span><span class="n">freq</span><span class="o">=</span><span class="n">freq</span><span class="p">,</span> <span class="n">harms</span><span class="o">=</span><span class="n">lfo1</span><span class="p">,</span> <span class="n">mul</span><span class="o">=</span><span class="mf">0.3</span><span class="p">)</span>
<span class="c1"># RC circuit.</span>
<a class="sphinx-codeautolink-a" href="../../api/classes/generators.html#pyo.Sine" title="pyo.lib.generators.Sine"><span class="n">lfo2</span></a> <span class="o">=</span> <a class="sphinx-codeautolink-a" href="../../api/classes/generators.html#pyo.Sine" title="pyo.lib.generators.Sine"><span class="n">Sine</span></a><span class="p">(</span><span class="mf">0.1</span><span class="p">,</span> <span class="n">mul</span><span class="o">=</span><span class="mf">0.5</span><span class="p">,</span> <span class="n">add</span><span class="o">=</span><span class="mf">0.5</span><span class="p">)</span>
<a class="sphinx-codeautolink-a" href="../../api/classes/generators.html#pyo.RCOsc" title="pyo.lib.generators.RCOsc"><span class="n">osc2</span></a> <span class="o">=</span> <a class="sphinx-codeautolink-a" href="../../api/classes/generators.html#pyo.RCOsc" title="pyo.lib.generators.RCOsc"><span class="n">RCOsc</span></a><span class="p">(</span><span class="n">freq</span><span class="o">=</span><span class="n">freq</span><span class="p">,</span> <span class="n">sharp</span><span class="o">=</span><a class="sphinx-codeautolink-a" href="../../api/classes/generators.html#pyo.Sine" title="pyo.lib.generators.Sine"><span class="n">lfo2</span></a><span class="p">,</span> <span class="n">mul</span><span class="o">=</span><span class="mf">0.3</span><span class="p">)</span>
<span class="c1"># Sine wave oscillator with feedback.</span>
<span class="n">lfo3</span> <span class="o">=</span> <a class="sphinx-codeautolink-a" href="../../api/classes/generators.html#pyo.Sine" title="pyo.lib.generators.Sine"><span class="n">Sine</span></a><span class="p">(</span><span class="mf">0.1</span><span class="p">)</span><span class="o">.</span><span class="n">range</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="mf">0.18</span><span class="p">)</span>
<a class="sphinx-codeautolink-a" href="../../api/classes/generators.html#pyo.SineLoop" title="pyo.lib.generators.SineLoop"><span class="n">osc3</span></a> <span class="o">=</span> <a class="sphinx-codeautolink-a" href="../../api/classes/generators.html#pyo.SineLoop" title="pyo.lib.generators.SineLoop"><span class="n">SineLoop</span></a><span class="p">(</span><span class="n">freq</span><span class="o">=</span><span class="n">freq</span><span class="p">,</span> <span class="n">feedback</span><span class="o">=</span><span class="n">lfo3</span><span class="p">,</span> <span class="n">mul</span><span class="o">=</span><span class="mf">0.3</span><span class="p">)</span>
<span class="c1"># Roland JP-8000 Supersaw emulator.</span>
<span class="n">lfo4</span> <span class="o">=</span> <a class="sphinx-codeautolink-a" href="../../api/classes/generators.html#pyo.Sine" title="pyo.lib.generators.Sine"><span class="n">Sine</span></a><span class="p">(</span><span class="mf">0.1</span><span class="p">)</span><span class="o">.</span><span class="n">range</span><span class="p">(</span><span class="mf">0.1</span><span class="p">,</span> <span class="mf">0.75</span><span class="p">)</span>
<a class="sphinx-codeautolink-a" href="../../api/classes/generators.html#pyo.SuperSaw" title="pyo.lib.generators.SuperSaw"><span class="n">osc4</span></a> <span class="o">=</span> <a class="sphinx-codeautolink-a" href="../../api/classes/generators.html#pyo.SuperSaw" title="pyo.lib.generators.SuperSaw"><span class="n">SuperSaw</span></a><span class="p">(</span><span class="n">freq</span><span class="o">=</span><span class="n">freq</span><span class="p">,</span> <span class="n">detune</span><span class="o">=</span><span class="n">lfo4</span><span class="p">,</span> <span class="n">mul</span><span class="o">=</span><span class="mf">0.3</span><span class="p">)</span>
<span class="c1"># Interpolates between input objects to produce a single output</span>
<span class="n">sel</span> <span class="o">=</span> <a class="sphinx-codeautolink-a" href="../../api/classes/pan.html#pyo.Selector" title="pyo.lib.pan.Selector"><span class="n">Selector</span></a><span class="p">([</span><a class="sphinx-codeautolink-a" href="../../api/classes/generators.html#pyo.Blit" title="pyo.lib.generators.Blit"><span class="n">osc1</span></a><span class="p">,</span> <a class="sphinx-codeautolink-a" href="../../api/classes/generators.html#pyo.RCOsc" title="pyo.lib.generators.RCOsc"><span class="n">osc2</span></a><span class="p">,</span> <a class="sphinx-codeautolink-a" href="../../api/classes/generators.html#pyo.SineLoop" title="pyo.lib.generators.SineLoop"><span class="n">osc3</span></a><span class="p">,</span> <a class="sphinx-codeautolink-a" href="../../api/classes/generators.html#pyo.SuperSaw" title="pyo.lib.generators.SuperSaw"><span class="n">osc4</span></a><span class="p">])</span><span class="o">.</span><span class="n">out</span><span class="p">()</span>
<span class="n">sel</span><span class="o">.</span><span class="n">ctrl</span><span class="p">(</span><span class="n">title</span><span class="o">=</span><span class="s2">"Input interpolator (0=Blit, 1=RCOsc, 2=SineLoop, 3=SuperSaw)"</span><span class="p">)</span>
<span class="c1"># Displays the waveform of the chosen source</span>
<a class="sphinx-codeautolink-a" href="../../api/classes/analysis.html#pyo.Scope" title="pyo.lib.analysis.Scope"><span class="n">sc</span></a> <span class="o">=</span> <a class="sphinx-codeautolink-a" href="../../api/classes/analysis.html#pyo.Scope" title="pyo.lib.analysis.Scope"><span class="n">Scope</span></a><span class="p">(</span><span class="n">sel</span><span class="p">)</span>
<span class="c1"># Displays the spectrum contents of the chosen source</span>
<a class="sphinx-codeautolink-a" href="../../api/classes/analysis.html#pyo.Spectrum" title="pyo.lib.analysis.Spectrum"><span class="n">sp</span></a> <span class="o">=</span> <a class="sphinx-codeautolink-a" href="../../api/classes/analysis.html#pyo.Spectrum" title="pyo.lib.analysis.Spectrum"><span class="n">Spectrum</span></a><span class="p">(</span><span class="n">sel</span><span class="p">)</span>
<span class="n">s</span><span class="o">.</span><span class="n">gui</span><span class="p">(</span><span class="nb">locals</span><span class="p">())</span>
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