replaced sum[1-4].awk with serial and columnar versions;

minor merge updates between fir_window scripts;

1 files changed, 3 insertions, 3 deletions

diff --git a/fir_window.awk b/fir_window.awk
index 076e5df..d5ad86c 100644
--- a/fir_window.awk
+++ b/fir_window.awk
@@ -1,7 +1,7 @@
 #!/usr/bin/awk -f

 

-### hamming.awk

-# generate a Hamming window

+### fir_window.awk

+# generate a FIR window

 # R.W. Hamming, 'Digital Filters': H = '0.23 0.54 0.23'

 # https://en.wikipedia.org/wiki/Window_function provides a few values for the

 # 'a0' and 'a1' parameters of the raised cosine.

@@ -43,7 +43,7 @@ BEGIN {
 

     # window interval goes from -M to M

     M = 0.5*(N - 1)

-    pi = 4*atan2(1,1)

+    pi = 4.0*atan2(1.0, 1.0)

 

     for (n=-M; n<=M; n++) {

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