55. A speech recognition circuit according to claim 47 , wherein said control processor instructs a said processor to process a lexical tree by passing a lexical tree identifier for the lexical tree and history data for a recognition path associated with the lexical tree to said processor.
55. A speech recognition circuit according to claim 47 , wherein said control processor instructs a said processor to process a lexical tree by passing a lexical tree identifier for the lexical tree and history data for a recognition path associated with the lexical tree to said processor. 56. A speech recognition circuit according to claim 55 , wherein said history data includes an accumulated score for the recognition path.