Mercurial > hg > svcore
view base/Pitch.h @ 264:260032c26c4f
* don't store fft values scaled by fftsize/2; that's a special requirement
for the spectrogram, and other applications will not expect it -- make the
spectrogram do that scaling itself
* add a higher-resolution memory cache (still polar, though) as an alternative
to the 16-bit compact cache
* don't use the memory cache if we want rectangular coords (unless the disc
cache is totally infeasible) as conversion slows it down anyway
* avoid redundant rectangular -> polar -> rectangular conversion when storing
values in a rectangular-mode disc cache
author | Chris Cannam |
---|---|
date | Fri, 01 Jun 2007 13:56:35 +0000 |
parents | 4f26f623a8bc |
children | e412f65884ee |
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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */ /* Sonic Visualiser An audio file viewer and annotation editor. Centre for Digital Music, Queen Mary, University of London. This file copyright 2006 Chris Cannam. 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. See the file COPYING included with this distribution for more information. */ #ifndef _PITCH_H_ #define _PITCH_H_ #include <QString> class Pitch { public: /* If concertA <= 0, it will be taken from current preferences */ static float getFrequencyForPitch(int midiPitch, float centsOffset = 0, float concertA = 0.0); static int getPitchForFrequency(float frequency, float *centsOffsetReturn = 0, float concertA = 0.0); static QString getPitchLabel(int midiPitch, float centsOffset = 0, bool useFlats = false); static QString getPitchLabelForFrequency(float frequency, float concertA = 0.0, bool useFlats = false); }; #endif