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:
Dec. 28, 2004
Filed:
Jul. 10, 2003
Matti Kajala, Tampere, FI;
Matti Hāmäläinen, Kanavatie, FI;
Nokia Corporation, Espoo, FI;
Abstract
The invention relates to a system and method for processing a signal being emitted from a target signal source into a noisy environment, wherein said target signal source is located in a target signal source direction &phgr; with regard to the position of a transducer array , the method comprising the following steps: receiving, transforming and filtering said signal according to filter coefficients of a beamformer I, II in order to generate at least one beamformer output signal y′ (n), i=1 . . . N, the filter coefficients defining a desired predetermined filter characteristic of the beamformer; and generating a control signal t(n) representing said target signal source direction &phgr; . It is the object of the invention to improve such a system and method in the way that clear signal reception is achieved for any target signal source direction &phgr; with only a minimum of computational effort and memory capacity. That object is achieved by providing adjustable filter coefficients which are generated in response to said control signal t(n) such that the beamformer I, II has a predetermined filtering characteristic for said target signal source at said target signal source direction &phgr; .