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<head>
<title>Sounds and GUI</title>
<!-- 2016-10-23 Κυρ 16:36 -->
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<script type="text/javascript">
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<body>
<div id="preamble" class="status">
<a name="top" id="top"></a>
</div>
<div id="content">
<h1 class="title">Sounds and GUI</h1>
<div id="table-of-contents">
<h2>Table of Contents</h2>
<div id="text-table-of-contents">
<ul>
<li><a href="#sec-1">1. Basic keyboard shortcuts</a></li>
<li><a href="#sec-2">2. Function</a></li>
<li><a href="#sec-3">3. SynthDef</a>
<ul>
<li><a href="#sec-3-1">3.1. A synth with no arguments</a></li>
<li><a href="#sec-3-2">3.2. A synth with arguments</a></li>
</ul>
</li>
<li><a href="#sec-4">4. GUI and sequencers</a>
<ul>
<li><a href="#sec-4-1">4.1. GUI and UGen</a></li>
<li><a href="#sec-4-2">4.2. GUI and SynthDef</a></li>
<li><a href="#sec-4-3">4.3. GUI, Buffers and Routine</a>
<ul>
<li><a href="#sec-4-3-1">4.3.1. Grid sequencer and sliders</a></li>
</ul>
</li>
</ul>
</li>
<li><a href="#sec-5">5. Sequencing using patterns</a></li>
<li><a href="#sec-6">6. Demand rate UGens</a></li>
<li><a href="#sec-7">7. How to make a recording</a>
<ul>
<li><a href="#sec-7-1">7.1. The hard way</a></li>
<li><a href="#sec-7-2">7.2. An easy way</a></li>
</ul>
</li>
</ul>
</div>
</div>
<div id="outline-container-sec-1" class="outline-2">
<h2 id="sec-1"><span class="section-number-2">1</span> Basic keyboard shortcuts</h2>
<div class="outline-text-2" id="text-1">
<ul class="org-ul">
<li><b>Evaluate region</b>: <code>Ctrl + RET</code> (Control and Return)
<ul class="org-ul">
<li>Evaluates a code chunk within brackets <code>( )</code>
</li>
</ul>
</li>
<li><b>Evaluate line</b>: <code>Shift + RET</code>
</li>
<li><b>Stop sound forcefully</b>: <code>Ctrl + .</code> (Control and period)
</li>
<li><b>Boot Server</b>: <code>Ctrl + B</code>
</li>
<li><b>Recompile Library</b>: <code>Ctrl + Shift + L</code>
</li>
<li><b>Open help file</b>: Highlight keyword and press <code>Ctrl + D</code>
</li>
<li><b>Open source code</b>: Highlight keyword and press <code>Ctrl + I</code>
</li>
</ul>
<p>
On MacOS instead of <code>Ctrl</code> use <code>Cmd</code>.
</p>
</div>
</div>
<div id="outline-container-sec-2" class="outline-2">
<h2 id="sec-2"><span class="section-number-2">2</span> Function</h2>
<div class="outline-text-2" id="text-2">
<p>
A function is enclosed within curly brackets <code>{ }</code> and is <b>evaluated</b> when using the method <code>value</code>.
</p>
<p>
See the example below from <a href="http://doc.sccode.org/Classes/Function.html">Function</a> SC3 help file.
</p>
<div class="org-src-container">
<pre class="src src-sclang">(
<span class="org-keyword">var</span> a, b, c;
a = { [100, 200, 300].choose }; <span class="org-comment-delimiter">// </span><span class="org-comment">a function is enclosed within curly brackets</span>
b = { 10.rand + 1 }; <span class="org-comment-delimiter">// </span><span class="org-comment">another Function</span>
c = a + b; <span class="org-comment-delimiter">// </span><span class="org-comment">c is a Function.</span>
c.value.postln; <span class="org-comment-delimiter">// </span><span class="org-comment">evaluate c and print the result</span>
)
</pre>
</div>
<p>
A function with <b>arguments</b>:
</p>
<div class="org-src-container">
<pre class="src src-sclang">f = { |a, b| (a * b).postln }; <span class="org-comment-delimiter">// </span><span class="org-comment">|a, b| are the arguments</span>
f.value(3, 10);
</pre>
</div>
</div>
</div>
<div id="outline-container-sec-3" class="outline-2">
<h2 id="sec-3"><span class="section-number-2">3</span> SynthDef</h2>
<div class="outline-text-2" id="text-3">
<p>
A <a href="http://doc.sccode.org/Classes/SynthDef.html">SynthDef</a> is a language side representation of a synth definition on the server. This is the proper way to go in order to define sounds and call them in the language. They are more efficient than UGens.
</p>
</div>
<div id="outline-container-sec-3-1" class="outline-3">
<h3 id="sec-3-1"><span class="section-number-3">3.1</span> A synth with no arguments</h3>
<div class="outline-text-3" id="text-3-1">
<p>
A synth with no arguments (no external control of it).
</p>
<div class="org-src-container">
<pre class="src src-sclang"><span class="org-type">SynthDef</span>(<span class="org-constant">\def_noArgs</span>, { <span class="org-type">Out</span>.<span class="org-function-name">ar</span>(0, <span class="org-type">LPF</span>.<span class="org-function-name">ar</span>(<span class="org-type">PinkNoise</span>.<span class="org-function-name">ar</span>(1), 550))}).add;
a = <span class="org-type">Synth</span>(<span class="org-constant">\def_noArgs</span>); <span class="org-comment-delimiter">// </span><span class="org-comment">play the sound</span>
a.free; <span class="org-comment-delimiter">// </span><span class="org-comment">stop the sound and release the Synth</span>
<span class="org-comment-delimiter">// </span><span class="org-comment">(check the incremental values on the Post Window)</span>
</pre>
</div>
</div>
</div>
<div id="outline-container-sec-3-2" class="outline-3">
<h3 id="sec-3-2"><span class="section-number-3">3.2</span> A synth with arguments</h3>
<div class="outline-text-3" id="text-3-2">
<div class="org-src-container">
<pre class="src src-sclang">(
<span class="org-type">SynthDef</span>(<span class="org-constant">\def_args</span>, { | freq = 440 |
<span class="org-type">Out</span>.<span class="org-function-name">ar</span>(0,
<span class="org-type">Pan2</span>.<span class="org-function-name">ar</span>(
<span class="org-type">SinOsc</span>.<span class="org-function-name">ar</span>(freq, 0, 0.2) * <span class="org-type">Line</span>.<span class="org-function-name">kr</span>(1, 0, 1, <span class="org-variable-name">doneAction:</span> 2) <span class="org-comment-delimiter">// </span><span class="org-comment">Line releases the Synth</span>
)
)
}).add;
)
a = <span class="org-type">Synth</span>(<span class="org-constant">\def_args</span>); <span class="org-comment-delimiter">// </span><span class="org-comment">you don't have to free the Synth doneAction: 2 does that for you</span>
a = <span class="org-type">Synth</span>(<span class="org-constant">\def_args</span>, [<span class="org-constant">\freq</span>, 330]); <span class="org-comment-delimiter">// </span><span class="org-comment">change the frequency</span>
</pre>
</div>
</div>
</div>
</div>
<div id="outline-container-sec-4" class="outline-2">
<h2 id="sec-4"><span class="section-number-2">4</span> GUI and sequencers</h2>
<div class="outline-text-2" id="text-4">
<p>
An <a href="http://doc.sccode.org/Guides/GUI-Introduction.html">Introduction to GUI</a> and a <a href="http://doc.sccode.org/Overviews/GUI-Classes.html">List of GUI Classes</a> are available from on <a href="http://sccode.org/">sccode.org</a>.
</p>
</div>
<div id="outline-container-sec-4-1" class="outline-3">
<h3 id="sec-4-1"><span class="section-number-3">4.1</span> GUI and UGen</h3>
<div class="outline-text-3" id="text-4-1">
<div class="org-src-container">
<pre class="src src-sclang">(
s.waitForBoot({
w = <span class="org-type">Window</span>.new;
b = <span class="org-type">Button</span>(w, <span class="org-type">Rect</span>(20, 20, 80, 26))
.states_([[<span class="org-string">"play"</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.rand]])
.mouseDownAction_({
a = {<span class="org-type">EnvGen</span>.<span class="org-function-name">kr</span>(<span class="org-type">Env</span>.adsr, <span class="org-variable-name">doneAction:</span>2) * <span class="org-type">SinOsc</span>.<span class="org-function-name">ar</span>(440, 0, 0.4)}.play;
})
.action_({ <span class="org-comment-delimiter">// </span><span class="org-comment">an action sets the value to the View when something happens (ie. a button pressed)</span>
a.release(0.3); <span class="org-comment-delimiter">// </span><span class="org-comment">set the action to release the sound</span>
});
w.front;
})
)
</pre>
</div>
</div>
</div>
<div id="outline-container-sec-4-2" class="outline-3">
<h3 id="sec-4-2"><span class="section-number-3">4.2</span> GUI and SynthDef</h3>
<div class="outline-text-3" id="text-4-2">
<p>
The code below defines a synth and you can listen the sound using a button.
</p>
<div class="org-src-container">
<pre class="src src-sclang"><span class="org-type">SynthDef</span>(<span class="org-constant">\noise</span>, { | amp = 0.2 | <span class="org-type">Out</span>.<span class="org-function-name">ar</span>(0, <span class="org-type">PinkNoise</span>.<span class="org-function-name">ar</span>(amp)); }).add;
a = <span class="org-type">Synth</span>(<span class="org-constant">\noise</span>);
a.set(<span class="org-constant">\amp</span>, 0.3); <span class="org-comment-delimiter">// </span><span class="org-comment">set the argument while the Synth is playing</span>
a.free;
(
<span class="org-keyword">var</span> w, butt, sound; <span class="org-comment-delimiter">// </span><span class="org-comment">w is not an interpreter's var -- it's a local var</span>
<span class="org-comment-delimiter">// </span><span class="org-comment">define a window</span>
w = <span class="org-type">Window</span>.new(<span class="org-string">"first piece"</span>, <span class="org-type">Rect</span>(0, 0, 200, 200));
w.front; <span class="org-comment-delimiter">// </span><span class="org-comment">make the window</span>
w.onClose = { sound.free };
<span class="org-comment-delimiter">// </span><span class="org-comment">make the button</span>
butt = <span class="org-type">Button</span>(w, <span class="org-type">Rect</span>(0, 0, 100, 100));
<span class="org-comment-delimiter">//</span><span class="org-comment">define the states of the button</span>
butt.states = [[<span class="org-string">"start"</span>], [<span class="org-string">"stop"</span>]];
butt.action = { | v |
<span class="org-function-name">if</span> (v.value == 1) {
sound = <span class="org-type">Synth</span>(<span class="org-constant">'noise2'</span>);
w.onClose({
{ butt.value = 0 }.defer;
});
}{
sound.free;
}
};
)
</pre>
</div>
</div>
</div>
<div id="outline-container-sec-4-3" class="outline-3">
<h3 id="sec-4-3"><span class="section-number-3">4.3</span> GUI, Buffers and Routine</h3>
<div class="outline-text-3" id="text-4-3">
<p>
A sequencer that uses buffers to load samples.
</p>
<p>
Load the buffers and define the synth.
</p>
<div class="org-src-container">
<pre class="src src-sclang"><span class="org-comment-delimiter">// </span><span class="org-comment">you can use the following sound files from freesound.org</span>
<span class="org-comment-delimiter">/*</span>
<span class="org-comment">http://www.freesound.org/people/datasoundsample/sounds/41947/</span>
<span class="org-comment">http://www.freesound.org/people/datasoundsample/sounds/41948/</span>
<span class="org-comment">http://www.freesound.org/people/datasoundsample/sounds/41942/</span>
<span class="org-comment">http://www.freesound.org/people/datasoundsample/sounds/41944/</span>
<span class="org-comment">*/</span>
(
<span class="org-comment-delimiter">// </span><span class="org-comment">make sure to boot the server before loading the samples</span>
s.waitForBoot {
<span class="org-comment-delimiter">// </span><span class="org-comment">load samples from relative path (make a subfolder in the working directory with name 'samples')</span>
p = (<span class="org-keyword">thisProcess</span>.nowExecutingPath.dirname++<span class="org-string">"/samples/*"</span>).pathMatch;
<span class="org-comment-delimiter">// </span><span class="org-comment">collect samples to buffers</span>
c = p.collect{|item| <span class="org-type">Buffer</span>.read(s, item) };
}
)
<span class="org-comment-delimiter">// </span><span class="org-comment">define the SynthDef (synth definition)</span>
(
<span class="org-comment-delimiter">// </span><span class="org-comment">buffdrums</span>
<span class="org-type">SynthDef</span>(<span class="org-constant">\buffdrums</span>, { |bufnum=0, pan=0.0, amp=0.5|
<span class="org-type">Out</span>.<span class="org-function-name">ar</span>(0, <span class="org-type">Pan2</span>.<span class="org-function-name">ar</span>(<span class="org-type">PlayBuf</span>.<span class="org-function-name">ar</span>(1, bufnum, <span class="org-variable-name">doneAction:</span> 2), pan, amp))
}).add;
)
<span class="org-comment-delimiter">// </span><span class="org-comment">play drum hits</span>
<span class="org-type">Synth</span>(<span class="org-constant">\buffdrums</span>, [<span class="org-constant">\bufnum</span>, c[0]]);
<span class="org-type">Synth</span>(<span class="org-constant">\buffdrums</span>, [<span class="org-constant">\bufnum</span>, c[1]]);
<span class="org-type">Synth</span>(<span class="org-constant">\buffdrums</span>, [<span class="org-constant">\bufnum</span>, c[2]]);
<span class="org-type">Synth</span>(<span class="org-constant">\buffdrums</span>, [<span class="org-constant">\bufnum</span>, c[3]]);
</pre>
</div>
<p>
Make the GUI and play the routine.
</p>
<div class="org-src-container">
<pre class="src src-sclang">(
w = <span class="org-type">Window</span>.new(<span class="org-string">"Grid"</span>);
a = [
<span class="org-type">Button</span>(w)
.states_([[<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.green], [<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.yellow]])
.action_({ | butt | butt.value }),
<span class="org-type">Button</span>(w)
.states_([[<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.green], [<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.yellow]])
.action_({ | butt | butt.value }),
<span class="org-type">Button</span>(w)
.states_([[<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.green], [<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.yellow]])
.action_({ | butt | butt.value }),
<span class="org-type">Button</span>(w)
.states_([[<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.green], [<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.yellow]])
.action_({ | butt | butt.value })
];
b = [
<span class="org-type">Button</span>(w)
.states_([[<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.white], [<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.red]])
.action_({ | butt | butt.value }),
<span class="org-type">Button</span>(w)
.states_([[<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.white], [<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.red]])
.action_({ | butt | butt.value }),
<span class="org-type">Button</span>(w)
.states_([[<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.white], [<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.red]])
.action_({ | butt | butt.value }),
<span class="org-type">Button</span>(w)
.states_([[<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.white], [<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.red]])
.action_({ | butt | butt.value }),
<span class="org-type">Button</span>(w)
.states_([[<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.white], [<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.red]])
.action_({ | butt | butt.value }),
<span class="org-type">Button</span>(w)
.states_([[<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.white], [<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.red]])
.action_({ | butt | butt.value }),
<span class="org-type">Button</span>(w)
.states_([[<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.white], [<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.red]])
.action_({ | butt | butt.value }),
<span class="org-type">Button</span>(w)
.states_([[<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.white], [<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.red]])
.action_({ | butt | butt.value }),
<span class="org-type">Button</span>(w)
.states_([[<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.white], [<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.red]])
.action_({ | butt | butt.value }),
<span class="org-type">Button</span>(w)
.states_([[<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.white], [<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.red]])
.action_({ | butt | butt.value }),
<span class="org-type">Button</span>(w)
.states_([[<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.white], [<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.red]])
.action_({ | butt | butt.value }),
<span class="org-type">Button</span>(w)
.states_([[<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.white], [<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.red]])
.action_({ | butt | butt.value }),
<span class="org-type">Button</span>(w)
.states_([[<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.white], [<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.red]])
.action_({ | butt | butt.value }),
<span class="org-type">Button</span>(w)
.states_([[<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.white], [<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.red]])
.action_({ | butt | butt.value }),
<span class="org-type">Button</span>(w)
.states_([[<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.white], [<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.red]])
.action_({ | butt | butt.value }),
<span class="org-type">Button</span>(w)
.states_([[<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.white], [<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.red]])
.action_({ | butt | butt.value })
];
w.layout_( <span class="org-type">GridLayout</span>.rows(
[ a[0], a[1], a[2], a[3] ],
[ b[0], b[1], b[2], b[3] ],
[ b[4], b[5], b[6], b[7] ],
[ b[8], b[9], b[10], b[11] ],
[ b[12], b[13], b[14], b[15] ]
)).front;
)
<span class="org-comment-delimiter">//</span><span class="org-comment">a[0].valueAction = 1;</span>
<span class="org-comment-delimiter">//</span><span class="org-comment">b[0].value;</span>
(
t = 0.3;
r = <span class="org-type">Routine</span> {
<span class="org-function-name">loop</span> {
4 <span class="org-variable-name">do:</span> { |i|
a[i].valueAction = 1; <span class="org-comment-delimiter">// </span><span class="org-comment">switch on the current beat</span>
a[(i+1)%4].valueAction = 0; <span class="org-comment-delimiter">// </span><span class="org-comment">switch off all other beats</span>
a[(i+2)%4].valueAction = 0;
a[(i+3)%4].valueAction = 0;
<span class="org-comment-delimiter">// </span><span class="org-comment">play the sounds</span>
4 <span class="org-variable-name">do:</span> { |j|
<span class="org-function-name">if</span>( (b[j].value==1) && (i%4==j) ){
<span class="org-type">Synth</span>(<span class="org-constant">\buffdrums</span>, [<span class="org-constant">\bufnum</span>, c[3]]);
};
<span class="org-function-name">if</span>( (b[j+4].value==1) && (i%4==j) ){
<span class="org-type">Synth</span>(<span class="org-constant">\buffdrums</span>, [<span class="org-constant">\bufnum</span>, c[2]]);
};
<span class="org-function-name">if</span>( (b[j+8].value==1) && (i%4==j) ){
<span class="org-type">Synth</span>(<span class="org-constant">\buffdrums</span>, [<span class="org-constant">\bufnum</span>, c[1]]);
};
<span class="org-function-name">if</span>( (b[j+12].value==1) && (i%4==j) ){
<span class="org-type">Synth</span>(<span class="org-constant">\buffdrums</span>, [<span class="org-constant">\bufnum</span>, c[0]]);
};
};
t.wait; <span class="org-comment-delimiter">// </span><span class="org-comment">t values below ~0.04 will not produce accurate sequencing</span>
};
};
};
<span class="org-comment-delimiter">// </span><span class="org-comment">start the routine</span>
r.play(<span class="org-type">AppClock</span>); <span class="org-comment-delimiter">// </span><span class="org-comment">AppClock is used with GUI</span>
)
<span class="org-comment-delimiter">// </span><span class="org-comment">stop the routine</span>
r.stop;
</pre>
</div>
</div>
<div id="outline-container-sec-4-3-1" class="outline-4">
<h4 id="sec-4-3-1"><span class="section-number-4">4.3.1</span> Grid sequencer and sliders</h4>
<div class="outline-text-4" id="text-4-3-1">
<div class="org-src-container">
<pre class="src src-sclang">(
w = <span class="org-type">Window</span>.new(<span class="org-string">"Grid"</span>); <span class="org-comment-delimiter">// </span><span class="org-comment">a, b, w are interpreter's vars</span>
a = [
<span class="org-type">Button</span>(w)
.states_([[<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.green], [<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.yellow]])
.action_({ | butt | butt.value }),
<span class="org-type">Button</span>(w)
.states_([[<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.green], [<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.yellow]])
.action_({ | butt | butt.value }),
<span class="org-type">Button</span>(w)
.states_([[<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.green], [<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.yellow]])
.action_({ | butt | butt.value }),
<span class="org-type">Button</span>(w)
.states_([[<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.green], [<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.yellow]])
.action_({ | butt | butt.value })
];
b = [
<span class="org-type">Button</span>(w)
.states_([[<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.white], [<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.red]])
.action_({ | butt | butt.value }),
<span class="org-type">Button</span>(w)
.states_([[<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.white], [<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.red]])
.action_({ | butt | butt.value }),
<span class="org-type">Button</span>(w)
.states_([[<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.white], [<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.red]])
.action_({ | butt | butt.value }),
<span class="org-type">Button</span>(w)
.states_([[<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.white], [<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.red]])
.action_({ | butt | butt.value }),
<span class="org-type">Button</span>(w)
.states_([[<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.white], [<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.red]])
.action_({ | butt | butt.value }),
<span class="org-type">Button</span>(w)
.states_([[<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.white], [<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.red]])
.action_({ | butt | butt.value }),
<span class="org-type">Button</span>(w)
.states_([[<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.white], [<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.red]])
.action_({ | butt | butt.value }),
<span class="org-type">Button</span>(w)
.states_([[<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.white], [<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.red]])
.action_({ | butt | butt.value }),
<span class="org-type">Button</span>(w)
.states_([[<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.white], [<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.red]])
.action_({ | butt | butt.value }),
<span class="org-type">Button</span>(w)
.states_([[<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.white], [<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.red]])
.action_({ | butt | butt.value }),
<span class="org-type">Button</span>(w)
.states_([[<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.white], [<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.red]])
.action_({ | butt | butt.value }),
<span class="org-type">Button</span>(w)
.states_([[<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.white], [<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.red]])
.action_({ | butt | butt.value }),
<span class="org-type">Button</span>(w)
.states_([[<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.white], [<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.red]])
.action_({ | butt | butt.value }),
<span class="org-type">Button</span>(w)
.states_([[<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.white], [<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.red]])
.action_({ | butt | butt.value }),
<span class="org-type">Button</span>(w)
.states_([[<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.white], [<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.red]])
.action_({ | butt | butt.value }),
<span class="org-type">Button</span>(w)
.states_([[<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.white], [<span class="org-string">""</span>, <span class="org-type">Color</span>.black, <span class="org-type">Color</span>.red]])
.action_({ | butt | butt.value })
];
w.layout_( <span class="org-type">GridLayout</span>.rows(
[ a[0], a[1], a[2], a[3] ],
[ b[0], b[1], b[2], b[3], [ p = <span class="org-type">Slider</span>(w), <span class="org-variable-name">rows:</span>4] ], <span class="org-comment-delimiter">// </span><span class="org-comment">control amp with p</span>
[ b[4], b[5], b[6], b[7] ],
[ b[8], b[9], b[10], b[11] ],
[ b[12], b[13], b[14], b[15] ],
[
[
k = <span class="org-type">Slider</span>(w) <span class="org-comment-delimiter">// </span><span class="org-comment">bufnum = 3</span>
.orientation_(<span class="org-constant">\horizontal</span>)
.value_(0.5),
<span class="org-variable-name">columns:</span>4
]
],
[
[
l = <span class="org-type">Slider</span>(w) <span class="org-comment-delimiter">// </span><span class="org-comment">bufnum = 2</span>
.orientation_(<span class="org-constant">\horizontal</span>)
.value_(0.5),
<span class="org-variable-name">columns:</span>4
]
],
[
[
m = <span class="org-type">Slider</span>(w) <span class="org-comment-delimiter">// </span><span class="org-comment">bufnum = 1</span>
.orientation_(<span class="org-constant">\horizontal</span>)
.value_(0.5),
<span class="org-variable-name">columns:</span>4
]
],
[
[
n = <span class="org-type">Slider</span>(w) <span class="org-comment-delimiter">// </span><span class="org-comment">bufnum = 0</span>
.orientation_(<span class="org-constant">\horizontal</span>)
.value_(0.5),
<span class="org-variable-name">columns:</span>4
]
]
)).front;
)
<span class="org-comment-delimiter">//</span><span class="org-comment">a[0].valueAction = 1;</span>
<span class="org-comment-delimiter">//</span><span class="org-comment">b[0].value;</span>
(
t = 0.3;
r = <span class="org-type">Routine</span> {
<span class="org-function-name">loop</span> {
4 <span class="org-variable-name">do:</span> { |i|
a[i].valueAction = 1; <span class="org-comment-delimiter">// </span><span class="org-comment">switch on the current beat</span>
a[(i+1)%4].valueAction = 0; <span class="org-comment-delimiter">// </span><span class="org-comment">switch off all other beats</span>
a[(i+2)%4].valueAction = 0;
a[(i+3)%4].valueAction = 0;
<span class="org-comment-delimiter">// </span><span class="org-comment">play the sounds</span>
4 <span class="org-variable-name">do:</span> { |j|
<span class="org-comment-delimiter">// </span><span class="org-comment">control panning</span>
<span class="org-function-name">if</span>( (b[j].value==1) && (i%4==j) ){
<span class="org-type">Synth</span>(<span class="org-constant">\buffdrums</span>, [<span class="org-constant">\bufnum</span>, c[3], <span class="org-constant">\pan</span>, (k.value * 2 - 1)]);
};
<span class="org-function-name">if</span>( (b[j+4].value==1) && (i%4==j) ){
<span class="org-type">Synth</span>(<span class="org-constant">\buffdrums</span>, [<span class="org-constant">\bufnum</span>, c[2], <span class="org-constant">\pan</span>, (l.value * 2 - 1)]);
};
<span class="org-function-name">if</span>( (b[j+8].value==1) && (i%4==j) ){
<span class="org-type">Synth</span>(<span class="org-constant">\buffdrums</span>, [<span class="org-constant">\bufnum</span>, c[1], <span class="org-constant">\pan</span>, (m.value * 2 - 1)]);
};
<span class="org-function-name">if</span>( (b[j+12].value==1) && (i%4==j) ){
<span class="org-type">Synth</span>(<span class="org-constant">\buffdrums</span>, [<span class="org-constant">\bufnum</span>, c[0], <span class="org-constant">\pan</span>, (n.value * 2 - 1)]);
};
};
t.wait; <span class="org-comment-delimiter">// </span><span class="org-comment">t values below ~0.04 will not produce accurate sequencing</span>
};
};
};
<span class="org-comment-delimiter">// </span><span class="org-comment">start the routine</span>
r.play(<span class="org-type">AppClock</span>); <span class="org-comment-delimiter">// </span><span class="org-comment">AppClock is used with GUI</span>
)
<span class="org-comment-delimiter">// </span><span class="org-comment">stop the routine</span>
r.stop;
</pre>
</div>
</div>
</div>
</div>
</div>
<div id="outline-container-sec-5" class="outline-2">
<h2 id="sec-5"><span class="section-number-2">5</span> Sequencing using patterns</h2>
<div class="outline-text-2" id="text-5">
<p>
See <a href="http://doc.sccode.org/Classes/Pattern.html">Pattern</a> help file. Some popular pattern classes are <code>Pbind</code>, <code>Pseq</code>, <code>Pwhite</code>, <code>Prand</code>, <code>Ppar</code>, <code>Prout</code>, <code>Pn</code>.
</p>
<div class="org-src-container">
<pre class="src src-sclang">(
s.waitForBoot{
<span class="org-comment-delimiter">// </span><span class="org-comment">all sounds (buffers) are loaded from the same synthdef</span>
<span class="org-type">SynthDef</span>(<span class="org-constant">\buff_pat</span>, { |bufnum=0| <span class="org-type">Out</span>.<span class="org-function-name">ar</span>(0, <span class="org-type">PlayBuf</span>.<span class="org-function-name">ar</span>(1, bufnum, <span class="org-variable-name">doneAction:</span> 2)) }).add;
<span class="org-comment-delimiter">// </span><span class="org-comment">path to samples</span>
p = (<span class="org-keyword">thisProcess</span>.nowExecutingPath.dirname++<span class="org-string">"/samples/*"</span>).pathMatch;
<span class="org-comment-delimiter">// </span><span class="org-comment">collect samples to buffers</span>
c = p.collect{|item| <span class="org-type">Buffer</span>.read(s, item) };
s.sync; <span class="org-comment-delimiter">// </span><span class="org-comment">to wait for asynchronous things to complete</span>
p = <span class="org-type">Ppar</span>([
<span class="org-type">Pbind</span>(<span class="org-constant">\instrument</span>, <span class="org-constant">\buff_pat</span>, <span class="org-constant">\dur</span>, 0.25, <span class="org-constant">\bufnum</span>, <span class="org-type">Prand</span>(c.collect(_.bufnum)))
], <span class="org-builtin">inf</span> <span class="org-comment-delimiter">// </span><span class="org-comment">repeat for ever</span>
).play;
};
)
</pre>
</div>
<p>
A handy way to play with patterns is performed using method <code>asStream</code>. The example below is from <a href="http://doc.sccode.org/Classes/Pn.html">Pn</a> help file.
</p>
<div class="org-src-container">
<pre class="src src-sclang"><span class="org-comment-delimiter">// </span><span class="org-comment">sound example</span>
(
<span class="org-type">SynthDef</span>(<span class="org-constant">\help_sinegrain</span>,
{ <span class="org-keyword">arg</span> out=0, freq=440, sustain=0.05;
<span class="org-keyword">var</span> env;
env = <span class="org-type">EnvGen</span>.<span class="org-function-name">kr</span>(<span class="org-type">Env</span>.perc(0.01, sustain, 0.2), <span class="org-variable-name">doneAction:</span>2);
<span class="org-type">Out</span>.<span class="org-function-name">ar</span>(out, <span class="org-type">SinOsc</span>.<span class="org-function-name">ar</span>(freq, 0, env))
}).add;
)
(
<span class="org-keyword">var</span> a;
a = <span class="org-type">Pn</span>(<span class="org-type">Pshuf</span>([1, 2, 2, 3, 3, 3], 4)).asStream; <span class="org-comment-delimiter">// </span><span class="org-comment">repeat pattern four times</span>
{
<span class="org-function-name">loop</span> {
<span class="org-type">Synth</span>(<span class="org-constant">\help_sinegrain</span>, [<span class="org-constant">\freq</span>, a.next * 600 + 300]); <span class="org-comment-delimiter">// </span><span class="org-comment">sets the next value of the pattern</span>
0.2.wait;
}
}.fork; <span class="org-comment-delimiter">// </span><span class="org-comment">fork is alternative syntax for Routine</span>
)
</pre>
</div>
</div>
</div>
<div id="outline-container-sec-6" class="outline-2">
<h2 id="sec-6"><span class="section-number-2">6</span> Demand rate UGens</h2>
<div class="outline-text-2" id="text-6">
<p>
See <a href="http://doc.sccode.org/Classes/Demand.html">Demand</a>, <a href="http://doc.sccode.org/Classes/Duty.html">Duty</a> help files.
</p>
<div class="org-src-container">
<pre class="src src-sclang">(
    {
        <span class="org-keyword">var</span> freq;
        freq = <span class="org-type">Duty</span>.<span class="org-function-name">kr</span>(
                <span class="org-type">Drand</span>([0.01, 0.2, 0.4], <span class="org-builtin">inf</span>), <span class="org-comment-delimiter">// </span><span class="org-comment">demand ugen as durations</span>
                0,
                <span class="org-type">Dseq</span>([204, 400, 201, 502, 300, 200], <span class="org-builtin">inf</span>)
            );
        <span class="org-type">SinOsc</span>.<span class="org-function-name">ar</span>(freq * [1, 1.01]) * 0.1
    }.play;
)
</pre>
</div>
</div>
</div>
<div id="outline-container-sec-7" class="outline-2">
<h2 id="sec-7"><span class="section-number-2">7</span> How to make a recording</h2>
<div class="outline-text-2" id="text-7">
</div><div id="outline-container-sec-7-1" class="outline-3">
<h3 id="sec-7-1"><span class="section-number-3">7.1</span> The hard way</h3>
<div class="outline-text-3" id="text-7-1">
<p>
Defining a class to record the output of SC3.
</p>
<div class="org-src-container">
<pre class="src src-sclang"><span class="org-type">Record</span> {
*<span class="org-function-name">start</span> {
{
<span class="org-type">Server</span>.default.prepareForRecord;
0.1.wait;
<span class="org-type">Server</span>.default.record;
}.fork;
}
*<span class="org-function-name">stop</span> { <span class="org-type">Server</span>.default.stopRecording; }
}
</pre>
</div>
<p>
Save the class as a file <code>Record.sc</code> in your <code>Platform.userExtensionDir</code>, and recompile the class library.
</p>
<div class="org-src-container">
<pre class="src src-sclang"><span class="org-type">Platform</span>.userExtensionDir; <span class="org-comment-delimiter">// </span><span class="org-comment">Extensions available only to your user account</span>
<span class="org-type">Platform</span>.systemExtensionDir; <span class="org-comment-delimiter">// </span><span class="org-comment">Extensions available to all users on the machine</span>
</pre>
</div>
<p>
When you have recompile the library execute <code>Record.start</code> to record and <code>Record.stop</code> to stop the recording.
</p>
</div>
</div>
<div id="outline-container-sec-7-2" class="outline-3">
<h3 id="sec-7-2"><span class="section-number-3">7.2</span> An easy way</h3>
<div class="outline-text-3" id="text-7-2">
<p>
You can open the server's GUI with the command <code>s.makeGui</code>, press the record button and record.
</p>
</div>
</div>
</div>
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