Invention Grant
- Patent Title: Robust speech recognition in the presence of echo and noise using multiple signals for discrimination
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Application No.: US14835588Application Date: 2015-08-25
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Publication No.: US09672821B2Publication Date: 2017-06-06
- Inventor: Arvindh Krishnaswamy , Charles P. Clark , Sarmad Malik
- Applicant: APPLE INC.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Blakely, Sokoloff, Taylor & Zafman LLP
- Main IPC: G10L15/00
- IPC: G10L15/00 ; G10L15/20 ; G10L15/16 ; G10L21/0208

Abstract:
Systems and methods for speech recognition system having a speech processor that is trained to recognize speech by considering (1) a raw microphone signal that includes an echo signal and (2) different types of echo information signals from an echo cancellation system (and optionally different types of ambient noise suppression signals from a noise suppressor). The different types of echo information signals may include those used for echo cancelation and those having echo information. The speech recognition system may convert the raw microphone signal and different types of echo information signals (and optional noise suppression signals) into spectral features in the form of a vector, and a concatenator to combine the feature vectors into a total vector (for a period of time) that is used to train the speech processor, and during use of the speech processor to recognize speech.
Public/Granted literature
- US20160358602A1 ROBUST SPEECH RECOGNITION IN THE PRESENCE OF ECHO AND NOISE USING MULTIPLE SIGNALS FOR DISCRIMINATION Public/Granted day:2016-12-08
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