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von raredesign | Dez 3, 2019 | Allgemein | 0 Kommentare
Cokiee Shell
| Current Path : /usr/include/CLAM/ |
| Current File : //usr/include/CLAM/SpectralAnalysisConfig.hxx |
/*
* Copyright (c) 2001-2004 MUSIC TECHNOLOGY GROUP (MTG)
* UNIVERSITAT POMPEU FABRA
*
*
* 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 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
*
*/
#ifndef _SpectralAnalysis_
#define _SpectralAnalysis_
#include "DataTypes.hxx"
#include "ProcessingConfig.hxx"
#include "WindowGeneratorConfig.hxx"
#include "CircularShiftConfig.hxx"
#include "FFTConfig.hxx"
namespace CLAM {
/** Configuration class for Spectral Analysis class
* It includes specific parameters: HopSize,
* ZeroPadding, Sampling Rate and FFTSize. Further
* setter/getters are also offered for WindowSize and WindowType.
* It also includes complete configurations for child processings:
* WindowGenerator, Circular Shift and FFT. These configurations
* should only be modified by advanced users
*/
class SpectralAnalysisConfig:public ProcessingConfig
{
friend class SpectralAnalysis;
DYNAMIC_TYPE_USING_INTERFACE (SpectralAnalysisConfig,9,ProcessingConfig);
/** Configuration for children Processing Objects*/
DYN_ATTRIBUTE(0,public,WindowGeneratorConfig, WindowGenerator);
DYN_ATTRIBUTE(1,public,CircularShiftConfig,CircularShift);
DYN_ATTRIBUTE(2,public,FFTConfig, FFT);
DYN_ATTRIBUTE(3,public,int, prHopSize);
DYN_ATTRIBUTE(4,public,int, prZeroPadding);
DYN_ATTRIBUTE(5,public,int, prSamplingRate);
DYN_ATTRIBUTE(6,public,int, prFFTSize);
//xamat: added these so they can be accessible from a configurator
DYN_ATTRIBUTE(7,public,int, prWindowSize);
DYN_ATTRIBUTE(8,public,EWindowType, prWindowType);
public:
//Config shortcuts
/** Sets Analysis Window size in num. of samples.
* This setter actually changes window size in the window generator,
* size of the FFT, and amount of circular shift. If new window size
* is smaller than twice the hop size plus one, hop size is also
* modified to that value.
* Note1: for best results, window size should be set to odd number.
* Note2: this setter should be called after the hop size has already
* been set.
*/
void SetWindowSize(TSize w);
/** Getter for window size. Actually returns size of the window generator. */
TSize GetWindowSize() const;
/** Sets Analysis Window type, modifying configuration of child Window Generator
* configuration.
* @see EWindowType
*/
void SetWindowType(const EWindowType& t);
/** Getter for window type, returns window type in Window Generator */
const EWindowType& GetWindowType() const;
/** Sets Zero padding factor. It changes FFTSize and Circular shift accordingly.
* If factor is 0, FFTSize is set to WindowSize-1 next power of two (assumes window
* size is odd!)
* Assuming a WindowSize of 513, see following table to understand how the factor
* works:
* ZeroPaddingFactor FFTSize
* -1 256
* 0 512
* 1 1024
* 2 2048
* @see PowerOfTwo
*/
void SetZeroPadding(int z);
/** returns ZeroPaddingFactor being used.*/
int GetZeroPadding() const;
/** Sets Analysis Hop size in number of samples. This setter only changes attribute but
* does not change configurations accordingly! VIP: It assumes that a SetWindowSize is
* called afterwards.
*/
void SetHopSize(TSize h);
/** returns HopSize in number of samples.*/
TSize GetHopSize() const;
/** Sets Sampling rate of the input audio. It calls SetWindowSize for synchronizing existing
configurations.*/
void SetSamplingRate(TData sr);
/** returns SamplingRate */
TData GetSamplingRate() const;
/** synchronize configuration values just in case they had been modified directly **/
void Sync();
private:
/** Default Init adds all Dynamic Attributes */
void DefaultInit();
/** Sets default values: SamplingRate=44100, ZeroPaddingFactor=0, WindowSize=513,
* WindowType=Hamming, HopSize=256, and CircularShift's amount= 256*/
void DefaultValues();
/** Ad-hoc routine for finding FFT Size*/
TInt32 PowerOfTwo(TInt32 size);
};
}
#endif
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