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:
Aug. 13, 2024
Filed:
Jan. 07, 2022
Analog Devices International Unlimited Company, Limerick, IE;
Dietmar Ruwisch, Berlin, DE;
Analog Devices International Unlimited Company, Limerick, IE;
Abstract
A method and apparatus are provided for generating a directional output signal from sound received by at least two microphones arranged as microphone array. The directional output signal has one or more Beam Focus Directions. The method includes transforming sound received by each microphone into a corresponding complex valued frequency-domain microphone. For any Beam Focus Direction a Beam Focus Spectrum is calculated, consisting, for each of the plurality of frequency components, of time-dependent, real-valued attenuation factors being calculated based on the plurality of microphone signals. For each of the plurality of frequency components, the maximum amongst those attenuation factors of different Beam Focus Spectra is selected and multiplied with the frequency component of the complex-valued frequency-domain signal of one microphone, forming a frequency-domain multi-focus directional output signal, from which by means of inverse transformation a time-domain signal can be synthesized.