Just Released - The 1.0 Beta Release of Sphinx-4

Sphinx-4 was created via a joint collaboration between the Sphinx group at />Carnegie Mellon University, Sun Microsystems Laboratories, Mitsubishi Electric Research Labs (MERL), and Hewlett Packard (HP) with contributions from the University of California at Santa Cruz (UCSC) and the Massachusetts Institute of Technology (MIT).

The 1.0 beta release offers the following new features and improvements over the 0.1 alpha release:


  • Confidence scoring
  • Grammar support
  • JSGF limitations removed
  • Filler support for JSGF Grammars
  • Out-of-grammar utterance rejection
  • Narrow bandwidth acoustic model
  • WSJ5K Language model
  • More demonstration programs
  • Microphone selection
  • Bug fixes
With the 1.0 beta release, you get the Sphinx-4 source tree along with several acoustic and language models which handle tasks ranging from digit recognition to vocabulary n-Gram recognition.


Sphinx-4 has been tested on the following platforms: the Solaris 9 Operating System on the SPARC platform, Mac OS X 10.3.5, RedHat 9.0, Fedora Core 1, Microsoft Windows XP, and Microsoft Windows 2000.


The framework and the implementations are available via open source under a BSD-style license.


To post comments or questions to the Sphinx team visit https://sourceforge.net/forum/?group_id=1904 .


The Sphinx-4 Team:  Peter Gorniak, MIT (developer)

(in alphabetical order)   


Peter Gorniak, MIT (developer)

Evandro Gouvea, CMU (developer and speech advisor)

Philip Kwok, Sun Labs (developer)

Paul Lamere, Sun Labs (design/technical lead)

Beth Logan, HP (speech advisor)

Pedro Moreno, Google (speech advisor)

Bhiksha Raj, MERL (design lead)

Mosur Ravishankar, CMU (speech advisor)

Bent Schmidt-Nielsen, MERL (speech advisor)

Rita Singh, CMU/MIT (design/speech advisor)

JM Van Thong, HP (speech advisor)

Willie Walker, Sun Labs (overall lead)

Manfred Warmuth, USCS (speech advisor)

Joe Woelfel, MERL (developer and speech advisor)

Peter Wolf, MERL (developer and speech advisor)

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