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It's just the formula to calculate semitones within the equal
temperatment tuning:<br>
<br>
<a class="moz-txt-link-freetext" href="http://en.wikipedia.org/w/index.php?title=Equal_temperament#Twelve-tone_equal_temperament">http://en.wikipedia.org/w/index.php?title=Equal_temperament#Twelve-tone_equal_temperament</a><br>
<br>
Math.pow(...) is simply the exponent .... <br>
<br>
<div class="moz-cite-prefix">On 08.06.2015 14:38, Casper Schipper
wrote:<br>
</div>
<blockquote
cite="mid:817A1872-2E3A-4717-89A6-3BB37102F993@gmail.com"
type="cite">
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Hi, I think you meant to put the frequency generation inside of
the loop?
<div class="">Also, why don't you add some more steps to your
'scale' array ?</div>
<div class=""><br class="">
</div>
<div class="">For converting pitches: Std.mtof converts
midi-values (ranged 0-128, 69 being A4) to standard tempered
scale frequencies, bypassing your need to use Math.pow etc...</div>
<div class=""><br class="">
</div>
<div class="">You could just do: 69 => Std.mtof => sit.freq</div>
<div class=""><br class="">
</div>
<div class="">You may want to read the ChucK manual, which covers
the basics much better then I could explain in a single email !</div>
<div class=""><br class="">
</div>
<div class="">Happy chucking,</div>
<div class="">Casper</div>
<div class=""><br class="">
</div>
<div class="">
<div class=""><br class="">
</div>
<div class=""><br class="">
</div>
<div class=""><br class="">
</div>
<div class="">// Sitar<br class="">
<br class="">
Sitar sit => JCRev r => Echo a => dac;<br class="">
<br class="">
// gain<br class="">
<br class="">
.56 => r.gain;<br class="">
<br class="">
// reverb mix<br class="">
<br class="">
1.12 => r.mix;<br class="">
<br class="">
// max delay for echo<br class="">
<br class="">
1120::ms => a.max;<br class="">
<br class="">
// set delay for echo<br class="">
<br class="">
112::ms => a.delay;<br class="">
<br class="">
// initial effect mix<br class="">
<br class="">
0.0 => a.mix;<br class="">
<br class="">
<br class="">
<br class="">
<br class="">
<br class="">
// scale<br class="">
<br class="">
[ 1,5,6,7,15 ] @=> int scale[];<br class="">
<br class="">
<br class="">
<br class="">
// loop<br class="">
<br class="">
while( true ){<br class="">
// freq<br class="">
<br class="">
<br class="">
scale[Math.random2(0,scale.cap()-1)] => int freq;<br
class="">
<br class="">
220.0 * Math.pow( 1.05946, (Math.random2(0,2)*12) + freq )
=> sit.freq;<br class="">
<br class="">
//pluck<br class="">
<br class="">
Math.random2f( 0.1, 0.9 ) => sit.noteOn;<br class="">
<br class="">
<br class="">
<br class="">
//time<br class="">
<br class="">
Math.random2f( .01, 1000 )::ms => now;<br class="">
<br class="">
<br class="">
<br class="">
}<br class="">
<br class="">
<br class="">
</div>
<div class="">
<br class="">
<div>
<blockquote type="cite" class="">
<div class="">On 8 jun. 2015, at 06:26, J Alexander Diaz
<<a moz-do-not-send="true"
href="mailto:jalexander@diazsounds.com" class="">jalexander@diazsounds.com</a>>
wrote:</div>
<br class="Apple-interchange-newline">
<div class="">
<p class="" style="font-family: Helvetica; font-size:
12px; font-style: normal; font-variant: normal;
font-weight: normal; letter-spacing: normal;
line-height: normal; orphans: auto; text-align: start;
text-indent: 0px; text-transform: none; white-space:
normal; widows: auto; word-spacing: 0px;
-webkit-text-stroke-width: 0px;"><span class=""> <span
class="Apple-converted-space"> </span></span><b
class="">// freq</b></p>
<p class="" style="font-family: Helvetica; font-size:
12px; font-style: normal; font-variant: normal;
font-weight: normal; letter-spacing: normal;
line-height: normal; orphans: auto; text-align: start;
text-indent: 0px; text-transform: none; white-space:
normal; widows: auto; word-spacing: 0px;
-webkit-text-stroke-width: 0px;"><b class=""><span
class=""> <span class="Apple-converted-space"> </span></span>scale[<span
class="">Math</span>.random2(<span class="">0</span>,scale.cap()-<span
class="">1</span>)]<span class=""><span
class="Apple-converted-space"> </span></span>=><span
class=""><span class="Apple-converted-space"> </span></span><span
class="">int</span><span class=""><span
class="Apple-converted-space"> </span></span>freq;</b></p>
<p class="" style="font-family: Helvetica; font-size:
12px; font-style: normal; font-variant: normal;
font-weight: normal; letter-spacing: normal;
line-height: normal; orphans: auto; text-align: start;
text-indent: 0px; text-transform: none; white-space:
normal; widows: auto; word-spacing: 0px;
-webkit-text-stroke-width: 0px;"><b class=""><span
class=""> 220</span>.<span class="">0<span
class="Apple-converted-space"> </span></span>*<span
class=""><span class="Apple-converted-space"> </span></span><span
class="">Math</span>.pow(<span class=""><span
class="Apple-converted-space"> </span>1</span>.<span
class="">05946</span>,<span class=""><span
class="Apple-converted-space"> </span></span>(<span
class="">Math</span>.random2(<span class="">0</span>,<span
class="">2</span>)*<span class="">12</span>)<span
class=""><span class="Apple-converted-space"> </span></span>+<span
class=""><span class="Apple-converted-space"> </span></span>freq<span
class=""><span class="Apple-converted-space"> </span></span>)<span
class=""><span class="Apple-converted-space"> </span></span>=><span
class=""><span class="Apple-converted-space"> </span></span>sit.freq;</b></p>
</div>
</blockquote>
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