topical media & game development
actionscript-omr-lib-Pitch.ax
actionscript-omr-lib-Pitch.ax
[swf]
flex
package
{
public class @ax-actionscript-omr-lib-Pitch
{
private var octave:int;
private var tone:int;
public function @ax-actionscript-omr-lib-Pitch(octave:int, tone:int)
{
this.octave = octave;
if (octave==4){
//treble clef
//0-23, 5 = c5, 4 =a4
//0 is F6
}
this.tone=tone;
}
public function getnoteName():String{
F6 = 23
//done with switch, not very elegant but it does the job, tables of 12 are just as bad
switch (tone) {
case 23:
return "F6"
break;
case 22:
return "E6"
break;
case 21:
return "DS6"
break;
case 20:
return "D6"
break;
case 19:
return "CS6"
break;
case 18:
return "C6"
break;
case 17:
return "B5"
break;
case 16:
return "AS5"
break;
case 15:
return "A5"
break;
case 14:
return "GS5"
break;
case 13:
return "G5"
break;
case 12:
return "FS5"
break;
case 11:
return "F5"
break;
case 10:
return "E5"
break;
case 9:
return "DS5"
break;
case 8:
return "D5"
break;
case 7:
return "CS5"
break;
case 6:
return "C5"
break;
case 5:
return "B4"
break;
case 4:
return "AS4"
break;
case 3:
return "A4"
break;
case 2:
return "GS4"
break;
case 1:
return "G4"
break;
case 0:
return "AS4"
break;
default:
return "";
trace ( " no case tested true " )
}
}
public function getFrequency():Number{
//returns frequency in Hertz
//notes separated by facor 2^12
//octave value is the value used for clef indication
//Go from 0 = octave+2
//F6 = 1396.9hz, 23 in 0-23 scale
var f6:Number = 1396.9;
var noteFrequency:Number = f6 * (2^(-tone/12));
return noteFrequency;
}
}
}
(C) Æliens
27/08/2009
You may not copy or print any of this material without explicit permission of the author or the publisher.
In case of other copyright issues, contact the author.
