The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 04, 2018
Filed:
Oct. 30, 2015
Dialog Semiconductor (Uk) Limited, London, GB;
Paul Shields, Dunblane, GB;
Ashley Hughes, Edinburgh, GB;
Dialog Semiconductor (UK) Limited, London, GB;
Abstract
The proposed invention implements real-time sensitivity estimation, using a microphone path, and variable gain. When a multi-microphone system is configured to perform in its target use case, and the microphone gain is estimated, and the system output is corrected for performance degradation, sensitivity compensation is performed. A classification system is implemented to enable or disable subsequent gain estimation, and hence power consumption required when enabled or disabled, on a frame-by-frame basis. An acoustic environment is used to trigger a classification system, with electrical power consumption analysis performed to detect audio segments. The approach to the microphone sensitivity mismatch problem is to estimate the mismatch at runtime and provide gain compensation, and provide runtime compensation for the difference in sensitivity to sound pressure level between transducer elements in an array of 2 or more microphones.