OptimFROG DualStream Audio Compressor, version 4.509 [2003.04.13]
Copyright (C) 1996-2004 Florin Ghido, all rights reserved.
Visit http://LosslessAudioCompression.com for updates


What's new
==========

4.509 [2004.04.13]
~~~~~~~~~~~~~~~~~~
  - around 10% faster encoding in average bitrate mode at bit identical
    results
  - enhanced the WAV file parser to automatically detect uneven size
    chunks without the required alignment byte (non-conforming files)
  - slight general speed enhancement with around 2%
  - added the --headersize option to specify the starting header size
    for raw files, also useful for raw data alignment
  - enhanced the raw file parser to add the last few bytes to the tail
    instead of rejecting the file for having a non-divisible data size
  - enhanced automatic generation of file extension at decoding (using
    the header data to detect if the file is WAV or raw)
  - added full support for the data types SINT8, UINT16, UINT24, UINT32
  - fixed a very rare encoder bug where an invalid compressed block was
    created for some silence-like data. Thanks to Olivier for reporting

4.507 [2003.09.28]
~~~~~~~~~~~~~~~~~~
  - fixed wildcards support, where files not in the current directory
    were not expanded correctly with their path
  - fixed some small memory allocation problems
  - small fixes and improvements

4.507b1 [2003.07.24]
~~~~~~~~~~~~~~~~~~~~
  - corrected a very rare problem with 24 bit mono files when using
    --ans which could make the encoder crash (only ofs.exe updated)

4.507b [2003.07.20]
~~~~~~~~~~~~~~~~~~~
  - stable format, not anymore alpha stage
  - new correction file format, works now with the --ans option
  - corrected the --ans (advanced noise shaping) option, which
    previously used suboptimal formulas, and works better now
  - no longer creates pure lossless files, use OFR instead
  - default (no command line switches) encodes at --quality 3
  - corrected some small decoder problems with high amplitude signals
  - the --check option works with --correction to check MD5 hash
  - new input plug-ins (compiled also for dBpowerAMP and Winamp3)
  - decoding compatible with the alpha versions (4.507a and 4.507a2),
    but not with their correction files
  - removed raw file support, which was not implemented
  - small fixes and improvements

4.507a2 [2003.06.25]
~~~~~~~~~~~~~~~~~~~~
  - added advanced noise shaping at encoding (--ans), improving
    transparency, especially at middle bitrates

4.505a1 [2003.06.23]
~~~~~~~~~~~~~~~~~~~~
  - 210% faster encoding in quality mode at bit identical results
  - 220%-270% faster encoding in average bitrate mode at bit identical
    results
  - not publicly released

4.507a [2003.06.21]
~~~~~~~~~~~~~~~~~~~
  - created this file
  - first DualStream version
