不韋 呂 / Mbed 2 deprecated F746_RealtimeSpectrumAnalyzer_MEMS_Mic

Version using MEMS microphone and CODEC for the program "F746_RealtimeSpectrumAnalyzer". "F746_RealtimeSpectrumAnalyzer" の入力を MEMS のマイクと CODEC に変更．このプログラムは Tomona Nanase さんが作成し DISCO-F746NG_Oscilloscope の名前で登録しているプログラムで， CODEC を使って入力する部分を参考にして作成．このプログラムの説明は，CQ出版社のインターフェース誌，2016年4月号に掲載．

Dependencies:   BSP_DISCO_F746NG BUTTON_GROUP LCD_DISCO_F746NG TS_DISCO_F746NG UIT_FFT_Real mbed

MyClasses_Functions/AnalysisBase.cpp@8:e7dc8658c5cd, 2016-04-19 (annotated)

Committer:
MikamiUitOpen
Date:
Tue Apr 19 09:35:24 2016 +0000
Revision:
8:e7dc8658c5cd
Parent:
0:0e5131366580 
9

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MikamiUitOpen 0:0e5131366580 1 //-------------------------------------------------------
MikamiUitOpen 0:0e5131366580 2 // Base class for spectrum analysis
MikamiUitOpen 0:0e5131366580 3 //
MikamiUitOpen 0:0e5131366580 4 // 2015/12/15, Copyright (c) 2015 MIKAMI, Naoki
MikamiUitOpen 0:0e5131366580 5 //-------------------------------------------------------
MikamiUitOpen 0:0e5131366580 6
MikamiUitOpen 0:0e5131366580 7 #include "AnalysisBase.hpp"
MikamiUitOpen 0:0e5131366580 8
MikamiUitOpen 0:0e5131366580 9 namespace Mikami
MikamiUitOpen 0:0e5131366580 10 {
MikamiUitOpen 0:0e5131366580 11 AnalyzerBase::AnalyzerBase(int nData, int nFft, int nUse)
MikamiUitOpen 0:0e5131366580 12 : N_DATA_(nData), N_FFT_(nFft),
MikamiUitOpen 0:0e5131366580 13 fft_(nFft), wHm_(nData-1, nUse),
MikamiUitOpen 0:0e5131366580 14 xData_(new float[nUse]), wData_(new float[nUse]) {}
MikamiUitOpen 0:0e5131366580 15
MikamiUitOpen 0:0e5131366580 16 AnalyzerBase::~AnalyzerBase()
MikamiUitOpen 0:0e5131366580 17 {
MikamiUitOpen 0:0e5131366580 18 delete[] xData_;
MikamiUitOpen 0:0e5131366580 19 }
MikamiUitOpen 0:0e5131366580 20
MikamiUitOpen 0:0e5131366580 21 void AnalyzerBase::Execute(const float xn[], float db[])
MikamiUitOpen 0:0e5131366580 22 {
MikamiUitOpen 0:0e5131366580 23 // Differencing
MikamiUitOpen 0:0e5131366580 24 for (int n=0; n<N_DATA_-1; n++)
MikamiUitOpen 0:0e5131366580 25 xData_[n] = xn[n+1] - xn[n];
MikamiUitOpen 0:0e5131366580 26
MikamiUitOpen 0:0e5131366580 27 // Windowing (FFT, cepstrum: + zero-padding)
MikamiUitOpen 0:0e5131366580 28 wHm_.Execute(xData_, wData_);
MikamiUitOpen 0:0e5131366580 29
MikamiUitOpen 0:0e5131366580 30 // Pure virtual function for analyzing
MikamiUitOpen 0:0e5131366580 31 Analyze(wData_, db);
MikamiUitOpen 0:0e5131366580 32 }
MikamiUitOpen 0:0e5131366580 33 }
MikamiUitOpen 0:0e5131366580 34