NEAT TRICK: Want to create a pitch wheel? Lets say you want to - TopicsExpress



          

NEAT TRICK: Want to create a pitch wheel? Lets say you want to bend a base tone up or down by N semitones. Make an [hsl] with range -12 to +12. Send this to first inlet of an [expr]. Second inlet is the base frequency, e.g., [440] (This A4, sent via a message box, number atom, etc.). Then use [expr $f2 * pow (1.059462, $f1)] YOU WILL SEE that when your pitch wheel is -12, the output is 220 (A3), and when it is +12, output is 880 (A4) exactly what you want. PS: that funny constant is really the 12th root of 2. [pow (2, 1/12)] .... I just needed to figure this out, so I hope this helps someone else!
Posted on: Mon, 12 Jan 2015 05:08:02 +0000

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