Midi note number to frequency conversion - Node.js HTML

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Description

Midi note number to frequency conversion

Demo Code



/* ---------------------------------------------------------------------------------------
This jsaSound Code is distributed under LGPL 3
Copyright (C) 2012 National University of Singapore
Inquiries: director@anclab.org//from ww  w.ja  v  a 2  s  .  com

This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 3 of the License, or any later version.
This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNULesser General Public License for more details.
You should have received a copy of the GNU General Public License and GNU Lesser General Public License along with this program.  If not, see <http://www.gnu.org/licenses/>
------------------------------------------------------------------------------------------*/
/*
Author: Lonce Wyse
Date: July 2012
*/

// midi note number to frequency conversion 
function mtof(m) {
  return Math.pow(2, (m - 69) / 12) * 440;
}

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