CQpub0 Mikami / Mbed 2 deprecated IIR_LPF

The experiment using this program is introduced on "Interface" No.2, CQ publishing Co.,Ltd, 2015. 本プログラムを使った実験は，CQ出版社のインターフェース 2015年2月号で紹介しています．

Dependencies:   DSProcessingIO mbed

IIR_Coefficients.hpp@0:398107c96b1b, 2014-07-15 (annotated)

Committer:
CQpub0Mikami
Date:
Tue Jul 15 08:58:36 2014 +0000
Revision:
0:398107c96b1b
1

Who changed what in which revision?

UserRevisionLine numberNew contents of line
CQpub0Mikami 0:398107c96b1b 1 //--------------------------------------------------------------
CQpub0Mikami 0:398107c96b1b 2 // Coefficients for IIR filter, Order = 6
CQpub0Mikami 0:398107c96b1b 3 //--------------------------------------------------------------
CQpub0Mikami 0:398107c96b1b 4 // Lowpass filter
CQpub0Mikami 0:398107c96b1b 5 // Elliptic character
CQpub0Mikami 0:398107c96b1b 6 // Sampling frequency: 10.00 kHz
CQpub0Mikami 0:398107c96b1b 7 // Cutoff frequency: 0.50 kHz
CQpub0Mikami 0:398107c96b1b 8 // Ripples in passband: 0.50 dB
CQpub0Mikami 0:398107c96b1b 9 // Attenuation in stopband: 40.00 dB
CQpub0Mikami 0:398107c96b1b 10
CQpub0Mikami 0:398107c96b1b 11 #include "Biquad.hpp"
CQpub0Mikami 0:398107c96b1b 12
CQpub0Mikami 0:398107c96b1b 13 using namespace Mikami;
CQpub0Mikami 0:398107c96b1b 14
CQpub0Mikami 0:398107c96b1b 15 const int ORDER_ = 6;
CQpub0Mikami 0:398107c96b1b 16
CQpub0Mikami 0:398107c96b1b 17 const Biquad::Coefs ck_[ORDER_/2] = {
CQpub0Mikami 0:398107c96b1b 18 { 1.755914E+00f, -7.841154E-01f, -1.200026E+00f, 1.0f},
CQpub0Mikami 0:398107c96b1b 19 { 1.834544E+00f, -9.093489E-01f, -1.822074E+00f, 1.0f},
CQpub0Mikami 0:398107c96b1b 20 { 1.881858E+00f, -9.801108E-01f, -1.872779E+00f, 1.0f}};
CQpub0Mikami 0:398107c96b1b 21
CQpub0Mikami 0:398107c96b1b 22 const float g0_ = 1.080597E-02f;