Yoichi Nagashima / Mbed 2 deprecated CQ_nagasm_08_notch_test

add 60Hz/50Hz notch filter

Dependencies:   mbed

Diff: notch.hpp

Revision:
1:8fa2f521009a
Parent:
0:5ec74240d7f1
--- a/notch.hpp	Tue Dec 16 08:28:20 2014 +0000
+++ b/notch.hpp	Tue Dec 16 23:41:53 2014 +0000
@@ -34,6 +34,7 @@
 const float _50Hz_a1 = 1.937188, _50Hz_a2 = -0.939101, _50Hz_b1 = -1.999013, _50Hz_c0 = 1.938304;
 float a1, a2, b1, c0;
 float y1[3], y2[3];
+int notch_1, notch_2;
 
 void coef_set(int herz){
     if(herz < 55){