Marsyas  0.6.0-alpha
/usr/src/RPM/BUILD/marsyas-0.6.0/src/marsyas/Conversions.h
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00001 /*
00002 ** Copyright (C) 1998-2010 George Tzanetakis <gtzan@cs.uvic.ca>
00003 **
00004 ** This program is free software; you can redistribute it and/or modify
00005 ** it under the terms of the GNU General Public License as published by
00006 ** the Free Software Foundation; either version 2 of the License, or
00007 ** (at your option) any later version.
00008 **
00009 ** This program is distributed in the hope that it will be useful,
00010 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
00011 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00012 ** GNU General Public License for more details.
00013 **
00014 ** You should have received a copy of the GNU General Public License
00015 ** along with this program; if not, write to the Free Software
00016 ** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
00017 */
00018 
00019 #ifndef MARSYAS_CONVERSIONS_H
00020 #define MARSYAS_CONVERSIONS_H
00021 
00022 #include <marsyas/common_header.h>
00023 
00024 #include <cmath>
00025 #include <string>
00026 
00027 namespace Marsyas
00028 {
00035 marsyas_EXPORT mrs_real pitch2hertz(mrs_real pitch);
00036 marsyas_EXPORT mrs_real hertz2pitch(mrs_real hz);
00037 
00038 marsyas_EXPORT mrs_natural hertz2samples(mrs_real hz, mrs_real srate);
00039 
00040 marsyas_EXPORT mrs_real samples2hertz(mrs_real samples, mrs_real srate);
00041 marsyas_EXPORT mrs_real samples2hertz(mrs_natural samples, mrs_real srate);
00042 
00043 marsyas_EXPORT mrs_natural time2samples(std::string time, mrs_real srate);
00044 marsyas_EXPORT mrs_natural time2usecs(std::string time);
00045 
00046 marsyas_EXPORT mrs_real amplitude2dB(mrs_real a);
00047 marsyas_EXPORT mrs_real dB2amplitude(mrs_real a);
00048 
00049 marsyas_EXPORT mrs_real hertz2octs(mrs_real f, mrs_real middleAfreq = 440.0);
00050 
00051 marsyas_EXPORT mrs_real hertz2bark(mrs_real f, mrs_natural mode = 0);
00052 marsyas_EXPORT mrs_real bark2hertz(mrs_real f, mrs_natural mode = 0);
00053 
00054 marsyas_EXPORT mrs_real hertz2erb(mrs_real f);
00055 marsyas_EXPORT mrs_real erb2hertz(mrs_real e);
00056 
00057 marsyas_EXPORT mrs_real hertz2mel(mrs_real f, bool htk = false);
00058 marsyas_EXPORT mrs_real mel2hertz(mrs_real z, bool htk = false);
00059 
00060 marsyas_EXPORT mrs_real bin2hertz(mrs_natural bin, mrs_real nyquistFreq,
00061                                   mrs_real framerate);
00062 
00063 marsyas_EXPORT mrs_natural powerOfTwo(mrs_real v);
00064 
00065 marsyas_EXPORT void string2parameters(std::string s, realvec &v, char d);
00066 
00067 }//namespace Marsyas
00068 
00069 #endif