Load-adjusted speech recogintion

• US 6,629,075 B1
• Filed: 06/09/2000
• Issued: 09/30/2003
• Est. Priority Date: 06/09/2000
• Status: Expired due to Term

• Current Assignee: SpeechWorks International, Inc. (Microsoft Corporation)
• Original Assignee: SpeechWorks International, Inc. (Microsoft Corporation)
• Inventors: Schalkwyk, Johan
• Primary Examiner(s): To, Doris H.
• Assistant Examiner(s): Opsasnick, Michael N.
• Application Number:
  US09/591,161
• Time in Patent Office: 1,208 Days
• Field of Search: 704/270, 704/275
• US Class Current: 704/270
• CPC Class Codes: G10L 15/285 Memory allocation or algorithm optimisation to reduce hardware requirements

Abstract

A speech recognition system includes a user interface configured to provide signals indicative of a user'"'"'s speech. A speech recognizer of the system includes a processor configured to use the signals from the user interface to perform speech recognition operations to attempt to recognize speech indicated by the signals. A control mechanism is coupled to the voice recognizer and is configured to affect processor usage for speech recognition operations in accordance with a loading of the processor.

Claims

1. A speech recognition system comprising:

user interface logic configured to provide speech signals indicative of user speech;

speech recognition logic, responsive to processing parameters, wherein the processing parameters have an associated induced computational loading of a processor and an associated accuracy of speech recognition;

computational load-adjusting logic, responsive to a processor load variable representative of the computational loading of the processor, to adjust said processing parameters and thereby adjust computational loading of the processor and the accuracy of speech recognition,

wherein the speech recognition logic includes logic to generate one or more sets of hypotheses that represent potential matches to speech signals and the computational load-adjusting logic includes logic to identify via the processing parameters the hypotheses to be used by the speech recognition logic.

2. The system of claim 1, wherein the speech recognition logic includes logic to select one or more sets of hypotheses and each set of hypotheses has an associated computational loading of the processor and associated accuracy of speech recognition.