svn commit: r195283 - head/sys/tools/sound

[Ariff Abdullah]

Author: ariff
Date: Thu Jul  2 10:02:10 2009
New Revision: 195283
URL: http://svn.freebsd.org/changeset/base/195283

Log:
  Slightly increase amount of bandwidth of resampling filter for
  feeder_rate_quality=3. This have the benefit of reducing aliasing
  artifacts due to alias masking.
  
  Spectrogram analysis:
  
   o Old preset (100:36:0.90)
  	http://people.freebsd.org/~ariff/z_comparison/z_q3_old.png
  
   o New preset (100:36:0.92):
  	http://people.freebsd.org/~ariff/z_comparison/z_q3_new.png
  
  Approved by:	re (kib)

Modified:
  head/sys/tools/sound/feeder_rate_mkfilter.awk

Modified: head/sys/tools/sound/feeder_rate_mkfilter.awk
==============================================================================
--- head/sys/tools/sound/feeder_rate_mkfilter.awk	Thu Jul  2 09:50:13 2009	(r195282)
+++ head/sys/tools/sound/feeder_rate_mkfilter.awk	Thu Jul  2 10:02:10 2009	(r195283)
@@ -592,7 +592,7 @@ BEGIN {
 	if (ARGC < 2) {
 		ARGC = 1;
 		ARGV[ARGC++] = "100:8:0.85";
-		ARGV[ARGC++] = "100:36:0.90";
+		ARGV[ARGC++] = "100:36:0.92";
 		ARGV[ARGC++] = "100:164:0.97";
 		#ARGV[ARGC++] = "100:8";
 		#ARGV[ARGC++] = "100:16";