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- #ifndef _Spectrum_extensions_h_
- #define _Spectrum_extensions_h_
- /* Spectrum_extensions.h
- *
- * Copyright (C) 1993-2011, 2015 David Weenink
- *
- * This code 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 code 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
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this work. If not, see <http://www.gnu.org/licenses/>.
- */
- /*
- djmw 20010114
- djmw 20020813 GPL header
- djmw 20121022 Latest modification
- */
- #include "Spectrum.h"
- #include "Sound.h"
- #include "Graphics.h"
- autoSpectrum Spectrum_resample (Spectrum me, integer numberOfFrequencies);
- autoSpectrum Spectrum_compressFrequencyDomain (Spectrum me, double fmax, integer interpolationDepth, int freqscale, int method);
- autoSpectrum Spectrum_shiftFrequencies (Spectrum me, double shiftBy, double newMaximumFrequency, integer interpolationDepth);
- // Shift will be plusminus dx/2
- autoMatrix Spectrum_unwrap (Spectrum me);
- /*
- Unwrap the phases of the spectrum according to an algorithm by
- Tribolet as published in:
- Tribolet, J.M. & Quatieri, T.F. (1979), Computation of the Complex
- Spectrum, in: Programs for Digital Signal Processing,
- Digital Signal Processing Commitee (eds), IEEE Press,
- chapter 7.1.
- First row of returned matrix contains the amplitudes-squared,
- second row contains the unwrapped phases.
- */
- void Spectrum_drawPhases (Spectrum me, Graphics g, double fmin, double fmax,
- double phase_min, double phase_max, int unwrap, int garnish);
- autoSpectrum Spectra_multiply (Spectrum me, Spectrum thee);
- void Spectrum_conjugate (Spectrum me);
- #endif /* _Spectrum_extensions_h_ */
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