Sun Microsystems, Inc.

Atr Interpreting Telecommunications

Andrew J Hunt

William D Walker

Stuart J Adams

Nick Campbell

Johan Wouters

A system and method for referencing object instances of an application program, and invoking methods on those object instances from within a recognition grammar. A mapping is maintained between at least one string formed using characters in the character set of the recognition grammar and instances of objects in the application program. During operation of the disclosed system, when either the application program or script within a recognition grammar creates an application object instance, a reference to the object instance is added to the mapping table, together with an associated unique string. The unique string may then be used within scripting language in tags of the rule grammar, in order to refer to the object instance that has been &ldquo;registered&rdquo; by the application program in this way. A tags parser program may be used to interpret such object instance names while interpreting the scripting language contained in tags included in a recognition result object. The tags parser program calls the methods on such object instances directly, eliminating the need for logic in the application program to make such calls in response to the result tag information.

System and method for referencing object instances and invoking methods on those object instances from within a speech recognition grammar

A system for incorporating speech recognition into a computer program, including a number of speech controller modules corresponding to program components within the computer program. Each speech controller module supports a speech recognition grammar having at least one rule, where the speech recognition grammar provides an interface to operations on the corresponding program component. The rules of the speech recognition grammar associate spoken commands with data stored in the corresponding program component. A rule may include a reference to another local rule, or to a rule in a different speech recognition grammar, in which case a &ldquo;link&rdquo; to the other rule is formed. In this way, the disclosed system allows rules from the same or different grammars to be combined together, in order to build complex grammars. Each speech controller module operates to dynamically enable one or more rules it contains within a speech recognizer, in response to detecting the occurrence of an associated enabling condition. The speech controller module receives a recognition result from the speech recognizer indicating that the speech recognizer has detected one or more tokens associated with an enabled rule. In response to receipt of the recognition result, a speech controller module operates to invoke a method on data within the corresponding program component, and passes the result on to other speech controller modules that are linked to the recognition rule corresponding to the result.

System and method for interfacing speech recognition grammars to individual components of a computer program

In a speech synthesizer apparatus, a weighting coefficient training controller calculates acoustic distances in second acoustic feature parameters between one target phoneme from the same phoneme and the phoneme candidates other than the target phoneme based on first acoustic feature parameters and prosodic feature parameters, and determines weighting coefficient vectors for respective target phonemes defining degrees of contribution to the second acoustic feature parameters for respective phoneme candidates by executing a predetermined statistical analysis therefor. Then, a speech unit selector searches for a combination of phoneme candidates which correspond to a phoneme sequence of an input sentence and which minimizes a cost including a target cost representing approximate costs between a target phoneme and the phoneme candidates and a concatenation cost representing approximate costs between two phoneme candidates to be adjacently concatenated, and outputs index information on the searched out combination of phoneme candidates. Further, a speech synthesizer synthesizes a speech signal corresponding to the input phoneme sequence by sequentially reading out speech segments of speech waveform signals corresponding to the index information and concatenating the read speech segments of the speech waveform signals.

Growing community of inventors

Medford, MA, United States of America

Andrew J Hunt