takanaka kouzou
AM中波放送用SDR．CICフィルタと通常のFIRフィルタを組み合わせて使用．CQ出版社「トランジスタ技術」誌に掲載予定
Diff: CoefficientsLpf.hpp
- Revision:
- 0:9c28f5905a1a
diff -r 000000000000 -r 9c28f5905a1a CoefficientsLpf.hpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/CoefficientsLpf.hpp Sat Aug 29 11:25:01 2020 +0000
@@ -0,0 +1,24 @@
+//------------------------------------------------------------------------
+// Decimation 用フィルタ，2 段目
+//
+// 2020/07/23, Copyright (c) 2020 MIKAMI, Naoki
+//------------------------------------------------------------------------
+
+// 標本化周波数 (kHz) 100.000000
+// 次数 50
+// 帯域 1 帯域 2
+// 下側帯域端周波数 (kHz) 0.000000 12.500000
+// 上側帯域端周波数 (kHz) 7.500000 50.000000
+// 利得 1.000000 0.000000
+// 重み 1.000000 10.000000
+// 偏差 0.013299 0.001330
+// 偏差 [dB] 0.114754 -57.523511
+const int ORDER_FIR_ = 50;
+const float HN_[ORDER_FIR_/2+1] = {
+ 1.414112E-03f, 1.777859E-03f, 1.955856E-03f, 1.163382E-03f,
+ -8.047561E-04f, -3.639701E-03f, -6.438639E-03f, -7.901061E-03f,
+ -6.803443E-03f, -2.615442E-03f, 3.991907E-03f, 1.102213E-02f,
+ 1.558870E-02f, 1.488489E-02f, 7.415483E-03f, -5.952321E-03f,
+ -2.159831E-02f, -3.371720E-02f, -3.583729E-02f, -2.289379E-02f,
+ 6.796584E-03f, 5.037598E-02f, 1.006114E-01f, 1.474710E-01f,
+ 1.807161E-01f, 1.927341E-01f};
\ No newline at end of file