36 lines
929 B
C++
36 lines
929 B
C++
/**
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* @file Mfcc.cpp
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*
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* Calculation of MFCC signal features.
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*
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* This file is part of the Aquila DSP library.
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* Aquila is free software, licensed under the MIT/X11 License. A copy of
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* the license is provided with the library in the LICENSE file.
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*
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* @package Aquila
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* @version 3.0.0-dev
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* @author Zbigniew Siciarz
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* @date 2007-2014
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* @license http://www.opensource.org/licenses/mit-license.php MIT
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* @since 3.0.0
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*/
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#include "mfcc.h"
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#include "aquila/transform/Dct.h"
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#include "aquila/filter/MelFilterBank.h"
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namespace Aquila
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{
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std::vector<double> Mfcc::calculate(SpectrumType spectrum,
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std::size_t numFeatures)
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{
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//auto spectrum = m_fft->fft(source);
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Aquila::MelFilterBank bank(m_sampleRate, m_inputSize);
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auto filterOutput = bank.applyAll(spectrum);
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Aquila::Dct dct;
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return dct.dct(filterOutput, numFeatures);
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}
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}
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