不韋 呂 / Mbed 2 deprecated F746_SpectralAnalysis_Example

Spectrum analyzer using DISCO-F746NG. Spectrum is calculated by FFT or linear prediction. The vowel data is in "vowel_data.hpp"

Dependencies:   BSP_DISCO_F746NG LCD_DISCO_F746NG TS_DISCO_F746NG UIT_FFT_Real mbed BUTTON_GROUP

SpactrumAnalysisClasses/LinearPrediction.hpp

Committer:
MikamiUitOpen
Date:
2018-10-09
Revision:
6:f385940fbdb1
Parent:
0:c35b8a23a863

File content as of revision 6:f385940fbdb1:

//-----------------------------------------------------
// Class for linear prediction (Header)
// Copyright (c) 2014 MIKAMI, Naoki,  2014/12/30
//-----------------------------------------------------

#ifndef LINEAR_PREDICTION_HPP
#define LINEAR_PREDICTION_HPP

#include "mbed.h"

namespace Mikami
{
    class LinearPred
    {
    public:
        LinearPred(int nData, int order);
        ~LinearPred();
        bool Execute(const float x[], float a[], float &em);
    public:
        const uint16_t N_DATA_;
        const uint16_t ORDER_;

        float* r_;
        float* k_;
        float* am_;

        void AutoCorr(const float x[]);
        bool Durbin(float a[], float &em);
    };
}
#endif  // LINEAR_PREDICTION_HPP