fftutils.h

/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
#pragma once
 
// Local Includes
#include "fftbuffer.h"
 
// External Includes
#include <utility/dllexport.h>
 
namespace nap
{
    namespace utility
    {
        float NAPAPI interval(uint binCount, float nyqist);
 
        float NAPAPI freq(uint bin, uint binCount, float nyqist);
 
        void NAPAPI cutoff(const FFTBuffer::AmplitudeSpectrum& inAmps, FFTBuffer::AmplitudeSpectrum& outAmps, uint minBin, uint maxBin);
 
        float NAPAPI average(const FFTBuffer::AmplitudeSpectrum& amps, uint minBin = 0, uint maxBin = 0);
 
        float NAPAPI centroid(const FFTBuffer::AmplitudeSpectrum& amps);
 
        float NAPAPI flux(const FFTBuffer::AmplitudeSpectrum& current, const FFTBuffer::AmplitudeSpectrum& previous, uint minBin, uint maxBin);
    }
}