Re: [chuck-users] Help.

It's just the formula to calculate semitones within the equal temperatment tuning: http://en.wikipedia.org/w/index.php?title=Equal_temperament#Twelve-tone_equa... Math.pow(...) is simply the exponent .... On 08.06.2015 14:38, Casper Schipper wrote:

Hi, I think you meant to put the frequency generation inside of the loop? Also, why don't you add some more steps to your 'scale' array ?

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...

You could just do: 69 => Std.mtof => sit.freq

You may want to read the ChucK manual, which covers the basics much better then I could explain in a single email !

Happy chucking, Casper

// Sitar

Sitar sit => JCRev r => Echo a => dac;

// gain

.56 => r.gain;

// reverb mix

1.12 => r.mix;

// max delay for echo

1120::ms => a.max;

// set delay for echo

112::ms => a.delay;

// initial effect mix

0.0 => a.mix;

// scale

[ 1,5,6,7,15 ] @=> int scale[];

// loop

while( true ){ // freq

scale[Math.random2(0,scale.cap()-1)] => int freq;

220.0 * Math.pow( 1.05946, (Math.random2(0,2)*12) + freq ) => sit.freq;

//pluck

Math.random2f( 0.1, 0.9 ) => sit.noteOn;

//time

Math.random2f( .01, 1000 )::ms => now;

}

...

On 8 jun. 2015, at 06:26, J Alexander Diaz mailto:jalexander@diazsounds.com> wrote:

*// freq*

*scale[Math.random2(0,scale.cap()-1)]=>intfreq;*

* 220.0*Math.pow(1.05946,(Math.random2(0,2)*12)+freq)=>sit.freq;*

_______________________________________________ chuck-users mailing list chuck-users@lists.cs.princeton.edu https://lists.cs.princeton.edu/mailman/listinfo/chuck-users