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 * based on libvorbis 1.2.0
 * The noise control of the Impulse block was expanded. 
   This is effective with the outstanding sample of the pre-echo.
 * The pre-echo reduction code came to work at a lower bit rate.
 * Noise Normalization was reviewed. As a result, the bug is revised.
 * The detailed tuning was done again.


svn path=/branches/vorbis-aotuv/; revision=14647

svn path=/branches/vorbis-aotuv/; revision=12034

 # The action of noise normalization has been improved.  This has an effect in the sound roughness and tremor problem etc. in the low bitrate.
 # The threshold of a stereo mode change was calculated dynamically.  Some of problems which originate in channel coupling by this will improve. 
 # Noise control of an impulse block was changed (quality 0-10 / 32-48kHz). And pre-echo decreased slightly. 
 # Tuning of each part was redone according to above-mentioned changed part and additional part.
 

svn path=/branches/vorbis-aotuv/; revision=12033

 # This is the stable version. The contents are almost the same as beta4.51. 


svn path=/branches/vorbis-aotuv/; revision=12032

svn path=/branches/vorbis-aotuv/; revision=12031

 # This is a bug fix release.  There is no encode quality-difference fundamentally. 

- aoTuV Beta4.5
 # Reexamination of a low bit rate region, the addition of the code accompanying it, and tuning. Influence has this change below quality3.  Probably, in the especially low bit rate, it will be effective. 


svn path=/branches/vorbis-aotuv/; revision=12030

 # An addition and change of the code of a channel coupling processing portion. Thereby, disorder of the sound energy on hearing becomes small.  And a part of additional code of beta3 which is not required has already been deleted now.
 # Tuning of Masking relation and Noise Normalization. These mainly influence balance and the quantity of distortion which can be heard.
 # The bit allocation by the low bit rate was devised. This is generally effective.
 # Bug fix of beta3


svn path=/branches/vorbis-aotuv/; revision=12029

svn path=/branches/vorbis-aotuv/; revision=12028

svn path=/branches/vorbis-aotuv/; revision=12027

< <Since beta2 was adopted as official 1.1, beta3 uses 1.1 as a base. >>
#  bitrate management mode operates normally now. It not only became new, it offers new rate control. (changed part of Vorbis 1.1 by Monty) 

# Pre-echo was decreased in the mode of q0-q10. 
# Since some codes of beta2 were not working normally, correction and re-tuning were carried out. 
# In the mode below q3, the problem to which a part of sound becomes unstable is improved. (e.g. piano/strings)
# Distortion resulting from channel coupling was reduced. (e.g. brass/drumus/guitar)
# The q-2 new mode.


svn path=/branches/vorbis-aotuv/; revision=12026

svn path=/branches/vorbis-aotuv/; revision=12025

The problem to which the sound of a specific range becomes large was reduced. 
Tuning was improved in all bit rate regions. 


svn path=/branches/vorbis-aotuv/; revision=12024

 The problem produced in q0 - q-1 is corrected. 
 Due to the above-mentioned problem, Slightly, q0 - q-2 is readjusted. 

- Beta1
  q1 - q5 are adjusted slightly. 
  q-2 - q0 is readjusted. 
  Arrangement of a source code. 


svn path=/branches/vorbis-aotuv/; revision=12023

svn path=/branches/vorbis-aotuv/; revision=12022