Diff: FrequencyConverter/FrequencyConverter.hpp

Revision:

0:f69d3c64978d

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/FrequencyConverter/FrequencyConverter.hpp	Mon Jul 28 07:30:22 2014 +0000
@@ -0,0 +1,40 @@
+//--------------------------------------------------------------
+// Frequency converter system class
+// Copyright (c) 2014 MIKAMI, Naoki,  2014/07/20
+//--------------------------------------------------------------
+
+#ifndef FREQUENCYCONVERTER_HPP
+#define FREQUENCYCONVERTER_HPP
+
+#include "mbed.h"
+#include "HilbertTransform.hpp"
+#include "coefsHilbert94.hpp"
+#include "DC_Cut_Coefficients.hpp"
+#include "TwoPhaseGenerator.hpp"
+
+namespace Mikami
+{
+    class FrqConvSystem
+    {
+    private:
+        Hilbert<ORDER_> ht_;
+        Biquad DcCut_;      // DC cut filter
+        TwoPhaseGenerator sinCos_; // 100.0 Hz
+    public:
+        FrqConvSystem(float fC, float fS)
+            : ht_(hm_), DcCut_(cDccut_), sinCos_(fC, fS) {}
+        float Execute(float x)
+        {
+            float yI, yQ, cosx, sinx;
+
+            float xn = x;
+            xn = DcCut_.Execute(gDccut_*x); // DC cut
+            ht_.Execute(xn, yI, yQ);        // Hilbert transform
+            sinCos_.Generate(cosx, sinx);   // cos and sin generator
+            float yn = yI*cosx - yQ*sinx;   // conversion
+            return yn;
+       };
+    };
+}
+#endif  //  FREQUENCYCONVERTER_HPP
+