svn commit: r195283 - head/sys/tools/sound
Ariff Abdullah
ariff at FreeBSD.org
Thu Jul 2 10:02:11 UTC 2009
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";
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