不韋 呂 / Mbed 2 deprecated UIT2_VariableFIR_LPF

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Dependencies:   UIT_ACM1602NI UIT_ADDA mbed

Files at this revision

API Documentation at this revision

Revision 6:ccd700fb3f3a, committed 2014-12-08

Comitter:
MikamiUitOpen
Date:
Mon Dec 08 05:47:04 2014 +0000
Parent:
5:9dd178ff6239
Commit message:
7

Changed in this revision

WindowingDesignLpfHpf/WindowingDesignLH.cpp Show annotated file Show diff for this revision Revisions of this file
main.cpp Show annotated file Show diff for this revision Revisions of this file 
--- a/WindowingDesignLpfHpf/WindowingDesignLH.cpp	Sun Dec 07 08:55:48 2014 +0000
+++ b/WindowingDesignLpfHpf/WindowingDesignLH.cpp	Mon Dec 08 05:47:04 2014 +0000
@@ -1,7 +1,7 @@
 //------------------------------------------------------------------------------
 //  Design of FIR filter of LPF and HPF using window method
 //
-//  2014/11/09, Copyright (c) 2014 MIKAMI, Naoki
+//  2014/12/08, Copyright (c) 2014 MIKAMI, Naoki
 //------------------------------------------------------------------------------
 
 #include "WindowingDesignLH.hpp"
@@ -46,23 +46,6 @@
         
         for (int k=0; k<=order/2; k++)
             hk[k] = hm_[order/2-k];
-
-        // For compensation of gain
-        float sum = hk[order_/2];
-        if (pb == LPF)
-            for (int k=0; k<order_/2; k++)
-                sum = sum + 2.0f*hk[k];
-        if (pb == HPF)
-        {
-            float sign = -1.0;
-            for (int k=order_/2-1; k>=0; k--)
-            {
-                sum = sum + sign*2.0f*hk[k];
-                sign = -sign;
-            }
-        }
-        for (int k=0; k<=order_/2; k++)
-            hk[k] = hk[k]/sum;
     }
 
     // Calculation of coefficients for LPF

--- a/main.cpp	Sun Dec 07 08:55:48 2014 +0000
+++ b/main.cpp	Mon Dec 08 05:47:04 2014 +0000
@@ -3,7 +3,7 @@
 //      A0: Signal to be filtered
 //      A2: Value which controls cutoff frequency
 //
-// 2014/12/07, Copyright (c) 2014 MIKAMI, Naoki
+// 2014/12/08, Copyright (c) 2014 MIKAMI, Naoki
 //------------------------------------------------------------------
 
 #include "mbed.h"
@@ -104,3 +104,4 @@
         wait(0.1f);
     }
 }
+