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. 27, 2024
Filed:
Jan. 09, 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 adaptively generating a directional output signal from sound received by at least two microphones arranged as microphone array. The method includes transforming the sound received by each of the microphones and represented by analog-to-digital converted time-domain signals into corresponding complex-valued frequency-domain microphone signals each having a frequency component value for each of a plurality of frequency components, calculating from the complex-valued frequency-domain microphone signals a Beam Focus Spectrum by means of an Adaptive Spectrum that is calculated as quotient of conditionally updated moving temporal averages of complex-valued products of frequency-domain microphone signals, multiplying, for each of the plurality of frequency components, the attenuation factor with the frequency component value of the complex-valued frequency-domain microphone signal to obtain a directional frequency component value, and forming a frequency-domain directional output signal.