added optional precision argv to other scripts;

1 files changed, 7 insertions, 5 deletions

diff --git a/hamming.awk b/hamming.awk
index fd6d89c..f7ff9f7 100644
--- a/hamming.awk
+++ b/hamming.awk
@@ -7,14 +7,16 @@
 

 BEGIN {

 

-    ### R.W. Hamming, "Digital Filters"

-    # H = "0.23 0.54 0.23"

+    ARGV[1] ? N = ARGV[1] : N = 0

+    ARGV[2] ? OFMT = "%." ARGV[2] "g" : OFMT = "%g"

 

-    N = ARGV[1]

     # window interval goes from -M to M

     M = 0.5*(N - 1)

     pi = 4*atan2(1,1)

 

+    ### R.W. Hamming, "Digital Filters"

+    # H = "0.23 0.54 0.23"

+

     a0 = (25.0/46.0)

     a1 = (21.0/46.0)

 

@@ -29,10 +31,10 @@ BEGIN {
     for (n=-M; n<=M; n++) {

         if (N > 1 && M > 0) {

             w[n] = a0 + a1*cos((pi*n)/M)

-            print n, w[n]/M

+            print n + M, w[n]/M

         }

         else {

-            print n, 1.0

+            print n + M, 1.0

         }

     }