[xiph-commits] r12027 - branches/vorbis-aotuv

[j at svn.xiph.org]

Author: j
Date: 2006-11-05 07:03:25 -0800 (Sun, 05 Nov 2006)
New Revision: 12027

Added:
   branches/vorbis-aotuv/aoTuV_README.txt
   branches/vorbis-aotuv/aoTuV_technical.txt
Log:
add aoTuV info files



Added: branches/vorbis-aotuv/aoTuV_README.txt
===================================================================
--- branches/vorbis-aotuv/aoTuV_README.txt	2006-11-05 14:47:59 UTC (rev 12026)
+++ branches/vorbis-aotuv/aoTuV_README.txt	2006-11-05 15:03:25 UTC (rev 12027)
@@ -0,0 +1,26 @@
+aoTuV beta3 release note
+
+"aoTuV" tunes up Xiph.Org's libvorbis uniquely. 
+A license is taken as "BSD-style license" as well as original libvorbis. 
+
+
+# NOTICE #
+
+  A part of Nominal bitrate has changed. 
+
+  Manuke's patch is used for improvement in the speed of sort processing. 
+  When "#define OPT_SORT" of "lib/psy.h" is deleted, the conventional 
+  processing method is used.
+
+
+
+Thanks! Manuke.
+
+
+aoTuV based on <Xiph.Org libvorbis>
+
+Copyright (c) 2002,2003,2004 Xiph.Org Foundation
+Copyright (c) 2003,2004 Aoyumi
+
+
+AUTHOR : aoyumi <aoyumi at inter7.jp>
\ No newline at end of file

Added: branches/vorbis-aotuv/aoTuV_technical.txt
===================================================================
--- branches/vorbis-aotuv/aoTuV_technical.txt	2006-11-05 14:47:59 UTC (rev 12026)
+++ branches/vorbis-aotuv/aoTuV_technical.txt	2006-11-05 15:03:25 UTC (rev 12027)
@@ -0,0 +1,38 @@
+aoTuV beta3 technical information
+
+The differences from the aoTuV beta 2 and Vorbis 1.1...
+
+
+
+  1. Dynamic impulse block noise control(q0-10). [32/44.1/48kHz only] 
+  Conspicuous pre-echo is reduced.
+
+  2. New ATH curve. 
+
+  3. In order to cancel that a small sound becomes unstable, the noise level
+  of low frequency is lowered under specific conditions. (Only below q3) 
+  There is a greatest effect on a piano etc. [32/44.1/48kHz only]
+
+  4. The rate of lossless stereo is increased in specific conditions. This
+  improves many of conspicuous problems which a point stereo causes. (e.g 
+  drumus's hiss/voice, guitar and brass's distortion) [32/44.1/48kHz only]
+
+  5. The action of the noise normalization of point stereo is corrected. It
+  was set to one of the causes of distortion in a long tone (e.g 
+  strings/oboe/high tone voice). 
+
+  6. The HF reduction code was not working normally. This is corrected and
+  it retuned up according to the present condition. [32/44.1/48kHz only]
+
+  7. The q-2 mode was added in all sampling frequencies. And nominal bitrate
+  of q-1 are changed into a more nearly average value. Although nominal 
+  bitrate is more large at a low sampling frequency, average bitrate hardly
+  differs from the former version. 
+
+
+...and I mainly tune up tone/noise masking parameters. 
+
+
+
+2004/11/21
+Aoyumi
\ No newline at end of file