MULTI-MICROPHONE SPEECH RECOGNITION SYSTEMS AND RELATED TECHNIQUES

• US 20180137864A1
• Filed: 01/15/2018
• Published: 05/17/2018
• Est. Priority Date: 06/06/2015
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Apple Inc.
• Inventors: Ramprashad, Sean A., Thornburg, Harvey D., Krishnaswamy, Arvindh, Lindahl, Aram M.
• Granted Patent: US 10,304,462 B2
• Time in Patent Office: Days
• CPC Class Codes: G10L 15/20 Speech recognition techniques specially adapted for robustness in adverse environments, e.g. in noise, of stress induced speech G10L21/02 takes precedence
• CPC Class Codes: G10L 15/32 Multiple recognisers used in sequence or in parallel; Score combination systems therefor, e.g. voting systems

Abstract

A speech recognition system for resolving impaired utterances can have a speech recognition engine configured to receive a plurality of representations of an utterance and concurrently to determine a plurality of highest-likelihood transcription candidates corresponding to each respective representation of the utterance. The recognition system can also have a selector configured to determine a most-likely accurate transcription from among the transcription candidates. As but one example, the plurality of representations of the utterance can be acquired by a microphone array, and beamforming techniques can generate independent streams of the utterance across various look directions using output from the microphone array.

Claims

1. A speech recognition system for resolving impaired utterances, comprising:

a speech recognition engine configured to receive a plurality of representations of an utterance and concurrently to determine a plurality of highest-likelihood transcription candidates corresponding to each respective representation of the utterance; and

a selector configured to determine a most-likely accurate transcription from among the plurality of highest-probability transcription.

2-26. -26. (canceled)