Help/Collections/Harmonics.html

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  28 <p class="p1"><b>Harmonics</b></p>
  29 <p class="p2"><br></p>
  30 <p class="p3">Harmonics objects are convenient factories for creating Arrays that are used to fill buffers using the b_gen sine fill commands on the server.</p>
  31 <p class="p2"><br></p>
  32 <p class="p4"><b>Class Methods</b></p>
  33 <p class="p2"><br></p>
  34 <p class="p3"><b>*new(size)</b></p>
  35 <p class="p2"><br></p>
  36 <p class="p3">Create a new Harmonics array of size. Nothing is filled in for you, until instance methods are applied.</p>
  37 <p class="p2"><br></p>
  38 <p class="p5"><span class="s1">a = </span><span class="s2">Harmonics</span><span class="s1">.new(16); </span>// just returns an instance of Harmonics with size</p>
  39 <p class="p6"><br></p>
  40 <p class="p4"><b>Instance Methods</b></p>
  41 <p class="p2"><br></p>
  42 <p class="p3"><b>ramp(start, step)</b></p>
  43 <p class="p2"><br></p>
  44 <p class="p5"><span class="s1">a.ramp(1.0, 1.0); </span>// returns a harmonic series</p>
  45 <p class="p7"><br></p>
  46 <p class="p8">b = <span class="s2">Buffer</span>.alloc(s, 512, 1);</p>
  47 <p class="p5">// harmonic series for freqs, ramp down for amps</p>
  48 <p class="p8">b.sine2(a.ramp(1.0, 1.0).postln, a.ramp(0.5, -0.025).postln, <span class="s2">true</span>, <span class="s2">true</span>, <span class="s2">true</span>);</p>
  49 <p class="p7"><br></p>
  50 <p class="p8">z = <span class="s2">SynthDef</span>(<span class="s3">"help-Osc"</span>,{ <span class="s2">arg</span> out=0,bufnum=0;</p>
  51 <p class="p8"><span class="Apple-tab-span">     </span><span class="s2">Out</span>.ar(out,</p>
  52 <p class="p8"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="s2">Osc</span>.ar(bufnum, 200, 0, 0.5)</p>
  53 <p class="p8"><span class="Apple-tab-span">     </span>)</p>
  54 <p class="p8">});</p>
  55 <p class="p7"><br></p>
  56 <p class="p8">y = z.play(s,[<span class="s4">\out</span>, 0, <span class="s4">\bufnum</span>, b]);<span class="Apple-converted-space"> </span></p>
  57 <p class="p7"><br></p>
  58 <p class="p8">y.free;</p>
  59 <p class="p2"><br></p>
  60 <p class="p3"><b>decay(k) - 1 / ((i+1 ** k)</b></p>
  61 <p class="p2"><br></p>
  62 <p class="p9">a.decay(1.0);<span class="Apple-converted-space"> </span></p>
  63 <p class="p10"><br></p>
  64 <p class="p9">b.sine2(a.ramp(1.0, 1.0).postln, a.decay(1.0).postln, <span class="s2">true</span>, <span class="s2">true</span>, <span class="s2">true</span>);</p>
  65 <p class="p10"><br></p>
  66 <p class="p9">y = z.play(s,[<span class="s4">\out</span>, 0, <span class="s4">\bufnum</span>, b]);<span class="Apple-converted-space"> </span></p>
  67 <p class="p10"><br></p>
  68 <p class="p9">y.free;</p>
  69 <p class="p10"><br></p>
  70 <p class="p3"><b>geom(k) - 1 / (i ** k)</b></p>
  71 <p class="p2"><br></p>
  72 <p class="p9">a.geom(1.2);<span class="Apple-converted-space"> </span></p>
  73 <p class="p10"><br></p>
  74 <p class="p9">b.sine2(a.ramp(1.0, 1.0).postln, a.geom(1.2).postln, <span class="s2">true</span>, <span class="s2">true</span>, <span class="s2">true</span>);</p>
  75 <p class="p10"><br></p>
  76 <p class="p9">y = z.play(s,[<span class="s4">\out</span>, 0, <span class="s4">\bufnum</span>, b]);<span class="Apple-converted-space"> </span></p>
  77 <p class="p10"><br></p>
  78 <p class="p9">y.free;</p>
  79 <p class="p10"><br></p>
  80 <p class="p3"><b>formant(center, width) - create a formant like structure</b></p>
  81 <p class="p2"><br></p>
  82 <p class="p9">a.formant(6, 3);<span class="Apple-converted-space"> </span></p>
  83 <p class="p10"><br></p>
  84 <p class="p9">b.sine2(a.formant(12, 3).postln, a.geom(1.2), <span class="s2">true</span>, <span class="s2">true</span>, <span class="s2">true</span>);</p>
  85 <p class="p10"><br></p>
  86 <p class="p9">y = z.play(s,[<span class="s4">\out</span>, 0, <span class="s4">\bufnum</span>, b]);<span class="Apple-converted-space"> </span></p>
  87 <p class="p10"><br></p>
  88 <p class="p9">y.free;</p>
  89 <p class="p10"><br></p>
  90 <p class="p3"><b>teeth(spacing, start)</b></p>
  91 <p class="p2"><br></p>
  92 <p class="p9">a.teeth(6, 3);<span class="Apple-converted-space"> </span></p>
  93 <p class="p10"><br></p>
  94 <p class="p9">b.sine2(a.teeth(2, 3).postln, a.geom(1.2), <span class="s2">true</span>, <span class="s2">true</span>, <span class="s2">true</span>);</p>
  95 <p class="p10"><br></p>
  96 <p class="p9">y = z.play(s,[<span class="s4">\out</span>, 0, <span class="s4">\bufnum</span>, b]);<span class="Apple-converted-space"> </span></p>
  97 <p class="p10"><br></p>
  98 <p class="p9">b.sine2(a.teeth(4, 1).postln, a.geom(1.2), <span class="s2">true</span>, <span class="s2">true</span>, <span class="s2">true</span>);</p>
  99 <p class="p9">b.sine2(a.teeth(1, 3).postln, a.geom(1.2), <span class="s2">true</span>, <span class="s2">true</span>, <span class="s2">true</span>);</p>
 100 <p class="p9">b.sine2(a.teeth(2, 3).postln, a.geom(1.2), <span class="s2">true</span>, <span class="s2">true</span>, <span class="s2">true</span>);</p>
 101 <p class="p10"><br></p>
 102 <p class="p9">y.free;</p>
 103 <p class="p10"><br></p>
 104 <p class="p3"><b>cutoff(n) - </b>returns 1.0 to the nth place, fills the rest with 0.0</p>
 105 <p class="p2"><br></p>
 106 <p class="p9">a.cutoff(3);<span class="Apple-converted-space"> </span></p>
 107 <p class="p10"><br></p>
 108 <p class="p9">b.sine2(a.ramp(1.0, 1.0), a.cutoff(3), <span class="s2">true</span>, <span class="s2">true</span>, <span class="s2">true</span>);</p>
 109 <p class="p10"><br></p>
 110 <p class="p9">y = z.play(s,[<span class="s4">\out</span>, 0, <span class="s4">\bufnum</span>, b]);<span class="Apple-converted-space"> </span></p>
 111 <p class="p10"><br></p>
 112 <p class="p9">b.sine2(a.ramp(1.0, 1.0), a.cutoff(3), <span class="s2">true</span>, <span class="s2">true</span>, <span class="s2">true</span>);</p>
 113 <p class="p9">b.sine2(a.ramp(1.0, 1.0), a.cutoff(5), <span class="s2">true</span>, <span class="s2">true</span>, <span class="s2">true</span>);</p>
 114 <p class="p9">b.sine2(a.ramp(1.0, 1.0), a.cutoff(1), <span class="s2">true</span>, <span class="s2">true</span>, <span class="s2">true</span>);</p>
 115 <p class="p10"><br></p>
 116 <p class="p9">y.free;</p>
 117 <p class="p10"><br></p>
 118 <p class="p3"><b>shelf(start, end, startLevel, endLevel)<span class="Apple-converted-space"> </span></b></p>
 119 <p class="p2"><br></p>
 120 <p class="p9">a.shelf(0, 6, 1, 0);<span class="Apple-converted-space"> </span></p>
 121 <p class="p10"><br></p>
 122 <p class="p9">b.sine2(a.ramp(1.0, 1.0), a.shelf(0, 6, 1, 0).postln , <span class="s2">true</span>, <span class="s2">true</span>, <span class="s2">true</span>);</p>
 123 <p class="p10"><br></p>
 124 <p class="p9">y = z.play(s,[<span class="s4">\out</span>, 0, <span class="s4">\bufnum</span>, b]);<span class="Apple-converted-space"> </span></p>
 125 <p class="p10"><br></p>
 126 <p class="p9">b.sine2(a.ramp(1.0, 1.0), a.shelf(0, 11, 1, 0).postln , <span class="s2">true</span>, <span class="s2">true</span>, <span class="s2">true</span>);</p>
 127 <p class="p9">b.sine2(a.ramp(1.0, 1.0), a.shelf(2, 6, 1, 0).postln , <span class="s2">true</span>, <span class="s2">true</span>, <span class="s2">true</span>);</p>
 128 <p class="p9">b.sine2(a.ramp(1.0, 1.0), a.shelf(6, 8, 1, 0).postln , <span class="s2">true</span>, <span class="s2">true</span>, <span class="s2">true</span>);</p>
 129 <p class="p10"><br></p>
 130 <p class="p9">y.free;</p>
 131 <p class="p10"><br></p>
 132 <p class="p3"><b>sine(wavelength, iphase, mul, add)<span class="Apple-converted-space"> </span></b></p>
 133 <p class="p2"><br></p>
 134 <p class="p9">a.sine(8, 0, 1, 0);<span class="Apple-converted-space"> </span></p>
 135 <p class="p10"><br></p>
 136 <p class="p9">b.sine2(a.ramp(1.0, 1.0), a.sine(8, 0, 1, 0).postln , <span class="s2">true</span>, <span class="s2">true</span>, <span class="s2">true</span>);</p>
 137 <p class="p10"><br></p>
 138 <p class="p9">y = z.play(s,[<span class="s4">\out</span>, 0, <span class="s4">\bufnum</span>, b]);<span class="Apple-converted-space"> </span></p>
 139 <p class="p10"><br></p>
 140 <p class="p9">b.sine2(a.ramp(1.0, 1.0), a.sine(4, 0, 1, 0).postln , <span class="s2">true</span>, <span class="s2">true</span>, <span class="s2">true</span>);</p>
 141 <p class="p9">b.sine2(a.ramp(1.0, 1.0), a.sine(2.2, 0.5pi, 0.4, 0.2).postln , <span class="s2">true</span>, <span class="s2">true</span>, <span class="s2">true</span>);</p>
 142 <p class="p9">b.sine2(a.ramp(1.0, 1.0), a.sine(pi, 0.25pi, 0.5, 0).postln , <span class="s2">true</span>, <span class="s2">true</span>, <span class="s2">true</span>);</p>
 143 <p class="p10"><br></p>
 144 <p class="p9">y.free;</p>
 145 <p class="p10"><br></p>
 146 <p class="p3"><b>pulse(wavelength, iphase, duty, mul, add)<span class="Apple-converted-space"> </span></b></p>
 147 <p class="p2"><br></p>
 148 <p class="p9">a.pulse(8, 0, 2, 1, 0);<span class="Apple-converted-space"> </span></p>
 149 <p class="p10"><br></p>
 150 <p class="p9">b.sine2(a.ramp(1.0, 1.0), a.pulse(8, 0, 2, 1, 0).postln , <span class="s2">true</span>, <span class="s2">true</span>, <span class="s2">true</span>);</p>
 151 <p class="p10"><br></p>
 152 <p class="p9">y = z.play(s,[<span class="s4">\out</span>, 0, <span class="s4">\bufnum</span>, b]);<span class="Apple-converted-space"> </span></p>
 153 <p class="p10"><br></p>
 154 <p class="p9">b.sine2(a.ramp(1.0, 1.0), a.pulse(8, 0, 2, 1, 0).postln , <span class="s2">true</span>, <span class="s2">true</span>, <span class="s2">true</span>);</p>
 155 <p class="p9">b.sine2(a.ramp(1.0, 1.0), a.pulse(4, 0, 2, 0.4, 0.2).postln , <span class="s2">true</span>, <span class="s2">true</span>, <span class="s2">true</span>);</p>
 156 <p class="p9">b.sine2(a.ramp(1.0, 1.0), a.pulse(7, 0.5pi, 3, 0.5, 0.1).postln , <span class="s2">true</span>, <span class="s2">true</span>, <span class="s2">true</span>);</p>
 157 <p class="p10"><br></p>
 158 <p class="p9">y.free;</p>
 159 <p class="p10"><br></p>
 160 <p class="p3"><b>random methods:</b></p>
 161 <p class="p2"><b></b><br></p>
 162 <p class="p3"><b>rand(lo, hi)</b></p>
 163 <p class="p3"><b>exprand(lo, hi)</b></p>
 164 <p class="p3"><b>linrand(lo, hi)</b></p>
 165 <p class="p3"><b>rand2(val)</b></p>
 166 <p class="p3"><b>coin(prob)</b></p>
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