# license notes

The canonical python-soundfile repository is located [here](https://github.com/bastibe/python-soundfile).

While python-soundfile itself is licensed under the
[BSD-3-Clause](https://opensource.org/license/bsd-3-clause) license, it links
against media libraries that are licensed under a mixture of LGPL and BSD
licenses within [libsndfile](https://github.com/libsndfile/libsndfile). To help
ensure compliance for each of these libraries, copyrights and links to the
corresponding source code are included below.

## libflac

Copyright: 1994-2013, Free Software Foundation, Inc
  2000-2009, Josh Coalson
  2011-2025, Xiph.Org Foundation http://www.xiph.org/

License: BSD-3-Clause

Source: [here](https://github.com/xiph/flac)

Note: FLAC is GFDL-1.3, GPL-2.0, LGPL-2.1, and BSD-3-Clause licensed for
different components. We are only using the libFLAC component, which is
BSD-3-Clause.

## libmp3lame

Copyright: 1998, Michael Cheng
           1999-2001, Mark Taylor
           1999-2002, Albert L. Faber
           1999-2005, Takehiro Tominaga
           1999-2007, The LAME Project
           2000-2005, Alexander Leidinger
           2000-2005, Elecard Ltd.
           2000-2005, Gabriel Bouvigne
           2000-2005, Marie Orlova
           2000-2005, Peter Gubanov
           2000-2005, Vitaly Ivanov
           2000-2008, Gabriel Bouvigne
           2000-2008, Robert Hegemann
           2000, Don Melton
           2000, Frank Klemm
           2001-2002, Naoki Shibata
           2001, John Dahlstrom
           2001, Jonathan Dee
           2001, Ralf Kempkens
           2002, Per Bolmstedt
           2003, Olcios

License: LGPL-2+

Source: [here](https://sourceforge.net/p/lame/svn/HEAD/tree/)

## libmpg123

Copyright:
  1995-2025 by the mpg123 project
  2008 Christian Weisgerber <naddy@openbsd.org>
  2006-2007 by Zuxy Meng
  2000-2002 David Olofson
  1998 Fabrice Bellard
  1997 Mikko Tommila

License: LGPL-2.1

Source: [here](https://www.mpg123.de/trunk/)

## libogg

Copyright: 1994-2025, the Xiph.Org Foundation http://www.xiph.org/

License: BSD-3-Clause

Source: [here](https://github.com/xiph/ogg)

## libopus

Copyright: 1994-2025, the Xiph.Org Foundation http://www.xiph.org/
 2001-2018, Skype Limited
 2001-2018, Octasic
 2001-2018, Jean-Marc Valin
 2001-2018, Timothy B. Terriberry
 2001-2018, CSIRO
 2001-2018, Gregory Maxwell
 2001-2018, Mark Borgerding
 2001-2018, Erik de Castro Lopo

License: BSD-3-Clause

Source: [here](https://github.com/xiph/opus)

## libvorbis

Copyright (C) 2002-2025 Xiph.Org Foundation

License: BSD-3-Clause

Source: [here](https://github.com/xiph/vorbis)