Utils.cc

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//-----------------------------------------------------------------------------
//
//  $Id: Utils.cc 874 2014-09-08 02:21:29Z weegreenblobbie $
//
//  Nsound is a C++ library and Python module for audio synthesis featuring
//  dynamic digital filters. Nsound lets you easily shape waveforms and write
//  to disk or plot them. Nsound aims to be as powerful as Csound but easy to
//  use.
//
//  Copyright (c) 2005-Present Nick Hilton
//
//  weegreenblobbie_yahoo_com (replace '_' with '@' and '.')
//
//-----------------------------------------------------------------------------

//-----------------------------------------------------------------------------
//
//  This program is free software; you can redistribute it and/or modify
//  it under the terms of the GNU General Public License as published by
//  the Free Software Foundation; either version 2 of the License, or
//  (at your option) any later version.
//
//  This program 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
//  GNU Library General Public License for more details.
//
//  You should have received a copy of the GNU General Public License
//  along with this program; if not, write to the Free Software
//  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//
//-----------------------------------------------------------------------------
#include <Nsound/Utils.h>

#include <math.h> // for pow

using namespace Nsound;

namespace Nsound
{

//-----------------------------------------------------------------------------
// ! Calculates a new frequency that is a number of octaves and cents away.
float64
getFrequencyOffset(
    const float64 & f1,
    const float64 & octaves,
    const float64 & cents)
{
    return f1 * pow(2.0, octaves + cents / 1200.0);
}

}; // Nsound

// :mode=c++: jEdit modeline