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Production System (v0.0):
A research environment that includes
a generalized hierarchical Viterbi search-based decoder.
Recommended for serious speech and signal processing
Prototype System (v5.11):
A cross-word context-dependent
LVCSR system. Recommended for
speech technologists and application developers.
Prototype System v5.10: In this release, we have added the
capability to read HTK binary features. We have also added the
capability to compute the delta and acceleration coefficients
on the fly at run-time.
Prototype System v5.9: In this release, we have added support
hub/server architecture. More details on this can be found at the
web site for our
project. An more sophisticated version of this interface will be
Prototype System v5.8.1: The principal features of this
release are that we now support probabilistic networks in a way
that is backward compatible with releases prior to v5.8.
We also fixed an interesting bug in our state-tying process
that untied the tied state in the silence and sp models.
We also fixed bugs including some memory bugs (finally, our new
version of Purify arrived!) in the state-tying process. These bug
fixes will not impact overall decoding performance, however.
Finally, for those having trouble with compilation on Linux under
gcc 2.96.X or later, this version should compile and run properly.
IFC isip_r00_n08 (gandalf) :
This is the long-awaited release of the Algorithm classes,
a GUI tool to configure front ends without the need to write
code, and an enhanced version of the production decoder.
In short, it is now possible to run signal processing and decoding
experiments with this software. This release does not include
training, but the prototype system can be used for that.
An off-line version of the
is available as well.
Prototype System v5.8: In this release we have incorporated
support for probabilistic grammars in the grammar_compiler utility.
We have also vastly improved the speed and memory performance of
our N-gram language model decoding modes. Relatively minor efficiency
improvements have been made to all decoding modes, and
many minor bug fixes have been introduced.
IFC isip_r00_n07 (frodo) :
This release adds the statistic library (stat) to the n06
release. This library is used to implement the state-level
observation distribution model in our acoustic model.
This release also includes a preview release of the production
including audio and parameter files (TIDIGITS) is available.
Finally, we have made available a version of the
that can be viewed off-line.
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