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:
Feb. 14, 2017
Filed:
Jun. 18, 2013
Motorola Mobility Llc, Libertyville, IL (US);
Jonathan A Gibbs, Hampshire, GB;
Google Inc., Mountain View, CA (US);
Abstract
An encoding apparatus comprises a frame processor () which receives a multi channel audio signal comprising at least a first audio signal from a first microphone () and a second audio signal from a second microphone (). An ITD processorthen determines an inter time difference between the first audio signal and the second audio signal and a set of delays () generates a compensated multi channel audio signal from the multi channel audio signal by delaying at least one of the first and second audio signals in response to the inter time difference signal. A combiner () then generates a mono signal by combining channels of the compensated multi channel audio signal and a mono signal encoder () encodes the mono signal. The inter time difference may specifically be determined by an algorithm based on determining cross correlations between the first and second audio signals.