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Audacity是一款用於錄音和編輯聲音的、免費的開放源碼軟體。它可以執行於Mac OS X、Microsoft Windows、GNU/Linux和其它作業系統

Version 1.0.11 (2004-11-15)
  * Add support for SD2 files.
  * Add read support for loop info in WAV and AIFF files.
  * Add more tests.
  * Improve type safety.
  * Minor optimisations and bug fixes.

Version 1.0.10 (2004-06-15)
  * Fix AIFF read/write mode bugs.
  * Add support for compiling Win32 DLLS using MinGW.
  * Fix problems resulting in failed compiles with gcc-2.95.
  * Improve test suite.
  * Minor bug fixes.

Version 1.0.9 (2004-03-30)
  * Add handling of AVR (Audio Visual Research) files.
  * Improve handling of WAVEFORMATEXTENSIBLE WAV files.
  * Fix for using pipes on Win32.

Version 1.0.8 (2004-03-14)
  * Correct peak chunk handing for files with > 16 tracks.
  * Fix for WAV files with huge number of CUE chunks.

Version 1.0.7 (2004-02-25)
  * Fix clip mode detection on ia64, MIPS and other CPUs.
  * Fix two MacOSX build problems.

Version 1.0.6 (2004-02-08)
  * Added support for native Win32 file access API (Ross Bencina).
  * New mode to add clippling then a converting from float/double to integer
    would otherwise wrap around.
  * Fixed a bug in reading/writing files > 2Gig on Linux, Solaris and others.
  * Many minor bug fixes.
  * Other random fixes for Win32.

Version 1.0.5 (2003-05-03)
  * Added support for HTK files.
  * Added new function sf_open_fd() to allow for secure opening of temporary
    files as well as reading/writing sound files embedded within larger
    container files.
  * Added string support for AIFF files.
  * Minor bug fixes and code cleanups.

Version 1.0.4 (2003-02-02)
  * Added suport of PVF and XI files.
  * Added functionality for setting and retreiving strings from sound files.
  * Minor code cleanups and bug fixes.

Version 1.0.3 (2002-12-09)
  * Minor bug fixes.

Version 1.0.2 (2002-11-24)
  * Added support for VOX ADPCM.
  * Improved error reporting.
  * Added version scripting on Linux and Solaris.
  * Minor bug fixes.

Version 1.0.1 (2002-09-14)
  * Added MAT and MAT5 file formats.
  * Minor bug fixes.

Version 1.0.0 (2002-08-16)
  * Final release for 1.0.0.

Version 1.0.0rc6 (2002-08-14)
  * Release candidate 6 for the 1.0.0 series.
  * MacOS9 fixes.

Version 1.0.0rc5 (2002-08-10)
  * Release candidate 5 for the 1.0.0 series.
  * Changed the definition of sf_count_t which was causing problems when
    libsndfile was compiled with other libraries (ie WxWindows).
  * Minor bug fixes.
  * Documentation cleanup.

Version 1.0.0rc4 (2002-08-03)
  * Release candidate 4 for the 1.0.0 series.
  * Minor bug fixes.
  * Fix broken Win32 "make check".

Version 1.0.0rc3 (2002-08-02)
  * Release candidate 3 for the 1.0.0 series.
  * Fix bug where libsndfile was reading beyond the end of the data chunk.
  * Added on-the-fly header updates on write.
  * Fix a couple of documentation issues.

Version 1.0.0rc2 (2002-06-24)
  * Release candidate 2 for the 1.0.0 series.
  * Fix compile problem for Win32.

Version 1.0.0rc1 (2002-06-24)
  * Release candidate 1 for the 1.0.0 series.

Version 0.0.28 (2002-04-27)
  * Last offical release of 0.0.X series of the library.

Version 0.0.8 (1999-02-16)
  * First offical release.