AT&T FSM Library

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The AT&T FSM Library is a collection of Unix software tools for creating and manipulating finite state machines, specifically weighted finite-state acceptors and transducers. While completely general, the library was designed for and is being used in speech processing applications, such as speech recognition and speech synthesis. It is available under non-commercial (binary only) and commercial licenses from AT&T Labs.

The Library consists of three sets of components:

User program level components that are stand-alone programs and read/write data from files or pipes.
A hierarchy of C/C++ library functions that can be used from the user's code.
A set of definitions that specify labels, weights and kinds of fsm representations.