Nucleo-F446 によるグラフィック・イコライザ.DA変換器にデータを送る際は 4 倍にアップ・サンプリング.
Dependencies: mbed SerialTxRxIntr F446_AD_DA_Multirate
Revision 6:7dd696fe86c8, committed 2019-01-31
- Comitter:
- MikamiUitOpen
- Date:
- Thu Jan 31 12:40:34 2019 +0000
- Parent:
- 5:a4f15be9afb7
- Commit message:
- 7
Changed in this revision
diff -r a4f15be9afb7 -r 7dd696fe86c8 F446_AD_DA_Multirate.lib --- a/F446_AD_DA_Multirate.lib Sun Oct 07 04:31:25 2018 +0000 +++ b/F446_AD_DA_Multirate.lib Thu Jan 31 12:40:34 2019 +0000 @@ -1,1 +1,1 @@ -http://os.mbed.com/users/MikamiUitOpen/code/F446_AD_DA_Multirate/#a14d7f0bc3f5 +https://os.mbed.com/users/MikamiUitOpen/code/F446_AD_DA_Multirate/#9429fb179c38
diff -r a4f15be9afb7 -r 7dd696fe86c8 SerialTxRxIntr.lib --- a/SerialTxRxIntr.lib Sun Oct 07 04:31:25 2018 +0000 +++ b/SerialTxRxIntr.lib Thu Jan 31 12:40:34 2019 +0000 @@ -1,1 +1,1 @@ -http://os.mbed.com/users/MikamiUitOpen/code/SerialTxRxIntr/#190d94fba10d +https://os.mbed.com/users/MikamiUitOpen/code/SerialTxRxIntr/#8f6e9351f313
diff -r a4f15be9afb7 -r 7dd696fe86c8 main.cpp --- a/main.cpp Sun Oct 07 04:31:25 2018 +0000 +++ b/main.cpp Thu Jan 31 12:40:34 2019 +0000 @@ -3,7 +3,7 @@ // // PC 側のプログラム: F446_GraphicEqualizer // -// 2018/10/07, Copyright (c) 2018 MIKAMI, Naoki +// 2019/01/31, Copyright (c) 2019 MIKAMI, Naoki //---------------------------------------------------------------------- #include "main.hpp" @@ -76,4 +76,3 @@ //------------------------------------------------------------ } } -
diff -r a4f15be9afb7 -r 7dd696fe86c8 main.hpp --- a/main.hpp Sun Oct 07 04:31:25 2018 +0000 +++ b/main.hpp Thu Jan 31 12:40:34 2019 +0000 @@ -3,27 +3,27 @@ // 使いたい場合,ここでフィルタの係数を定義し,それを F446_Multirate のオブ // ジェクトを実体化する際に,引数として渡す. // -// 2018/06/11, Copyright (c) 2018 MIKAMI, Naoki +// 2019/01/31, Copyright (c) 2019 MIKAMI, Naoki //---------------------------------------------------------------------- #include "F446_Multirate.hpp" #include "SerialRxTxIntr.hpp" #include "GrEqParamsCalculator.hpp" +using namespace Mikami; // マルチレート処理用の補間フィルタの係数 // 低域通過フィルタ // 連立チェビシェフ特性 // 次数 : 8 次 -// 標本化周波数:176.00 kHz +// 標本化周波数:176.40 kHz // 遮断周波数 : 20.00 kHz // 通過域のリップル: 0.50 dB // 阻止域の減衰量 :40.00 dB -const Biquad::Coefs HK_SM_[] = { - {1.459046E+00f, -5.819992E-01f, 2.333893E-01f, 1.0f}, // 1段目 - {1.481588E+00f, -8.172556E-01f, -1.240760E+00f, 1.0f}, // 2段目 - {1.494779E+00f, -9.473534E-01f, -1.442644E+00f, 1.0f}, // 3段目 - {1.502186E+00f, -9.896300E-01f, -1.482309E+00f, 1.0f}}; // 4段目 -const float G0_SM_ = 4*1.756776E-02f; // 利得定数 +const Biquad HK_SM_[] = { + Biquad(1.460326E+00f, -5.827534E-01f, 2.285060E-01f, 1.0f), // 1段目 + Biquad(1.483366E+00f, -8.175905E-01f, -1.243800E+00f, 1.0f), // 2段目 + Biquad(1.496830E+00f, -9.474507E-01f, -1.445014E+00f, 1.0f), // 3段目 + Biquad(1.504313E+00f, -9.896493E-01f, -1.484535E+00f, 1.0f)}; // 4段目 +const float G0_SM_ = 4*1.752428E-02f; // 利得定数 const int ORDER_SM_ = 8; // 次数 - -const int FS_ = 44100; // 入力の標本化周波数: 44.1 kHz +const int FS_ = 44100; // 入力の標本化周波数: 44.1 kHz
diff -r a4f15be9afb7 -r 7dd696fe86c8 mbed.bld --- a/mbed.bld Sun Oct 07 04:31:25 2018 +0000 +++ b/mbed.bld Thu Jan 31 12:40:34 2019 +0000 @@ -1,1 +1,1 @@ -http://mbed.org/users/mbed_official/code/mbed/builds/a7c7b631e539 \ No newline at end of file +https://os.mbed.com/users/mbed_official/code/mbed/builds/3a7713b1edbc \ No newline at end of file