不韋 呂 / Mbed 2 deprecated DSP_GraphicEqualizerB

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Dependencies:   mbed SerialTxRxIntr DSP_MultirateLinearphase

GraphicEqualizer/GraphicEqualizer.cpp@0:b3c94b253ae5, 2022-02-25 (annotated)

Committer:
MikamiUitOpen
Date:
Fri Feb 25 02:18:16 2022 +0000
Revision:
0:b3c94b253ae5
1

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MikamiUitOpen 0:b3c94b253ae5 1 //--------------------------------------------------------------
MikamiUitOpen 0:b3c94b253ae5 2 // グラフィックイコライザのクラス
MikamiUitOpen 0:b3c94b253ae5 3 // フィルらの係数を設定しない場合は，出力は出ない
MikamiUitOpen 0:b3c94b253ae5 4 //
MikamiUitOpen 0:b3c94b253ae5 5 // 2022/02/19, Copyright (c) 2022 MIKAMI, Naoki
MikamiUitOpen 0:b3c94b253ae5 6 //--------------------------------------------------------------
MikamiUitOpen 0:b3c94b253ae5 7
MikamiUitOpen 0:b3c94b253ae5 8 #include "GraphicEqualizer.hpp"
MikamiUitOpen 0:b3c94b253ae5 9
MikamiUitOpen 0:b3c94b253ae5 10 namespace Mikami
MikamiUitOpen 0:b3c94b253ae5 11 {
MikamiUitOpen 0:b3c94b253ae5 12 // コンストラクタ
MikamiUitOpen 0:b3c94b253ae5 13 GrEqualizer::GrEqualizer(int bands, float fs, float qVal)
MikamiUitOpen 0:b3c94b253ae5 14 : BANDS_(bands), Q_VAL_(qVal),
MikamiUitOpen 0:b3c94b253ae5 15 biquad_(bands), f0_(bands)
MikamiUitOpen 0:b3c94b253ae5 16 {
MikamiUitOpen 0:b3c94b253ae5 17 for (int n=0; n<BANDS_; n++) f0_[n] = 62.5f*powf(2, n);
MikamiUitOpen 0:b3c94b253ae5 18 SetOff();
MikamiUitOpen 0:b3c94b253ae5 19 Validate();
MikamiUitOpen 0:b3c94b253ae5 20 }
MikamiUitOpen 0:b3c94b253ae5 21
MikamiUitOpen 0:b3c94b253ae5 22 // グラフィック･イコライザの実行
MikamiUitOpen 0:b3c94b253ae5 23 float GrEqualizer::Filtering(float xn)
MikamiUitOpen 0:b3c94b253ae5 24 {
MikamiUitOpen 0:b3c94b253ae5 25 float yn = xn;
MikamiUitOpen 0:b3c94b253ae5 26 for (int n=0; n<BANDS_; n++)
MikamiUitOpen 0:b3c94b253ae5 27 yn = biquad_[n].Execute(yn);
MikamiUitOpen 0:b3c94b253ae5 28 return yn;
MikamiUitOpen 0:b3c94b253ae5 29 }
MikamiUitOpen 0:b3c94b253ae5 30 }