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:
Oct. 25, 2022
Filed:
Oct. 01, 2019
Nokia Technologies Oy, Espoo, FI;
Anssi Rämö, Tampere, FI;
Arto Lehtiniemi, Lempäälä, FI;
Antti Eronen, Tampere, FI;
Lasse Laaksonen, Tampere, FI;
Joonas Nikunen, Tampere, FI;
Nokia Technologies Oy, Espoo, FI;
Abstract
An apparatus, method and computer program is described comprising: receiving a near-field audio source signal from a near-field microphone (); receiving a far-field audio signal from an array comprising one or more far-field microphones (); determining a filter length of a first portion of a room impulse response filter for the near-field microphone, wherein said filter length of said first portion is the same at each of a plurality of frequency bands of the filter and wherein said filter length of said first portion includes a direct acoustic propagation delay; and determining a filter length of a second portion of the room impulse response filter at each of the plurality of frequency bands, wherein the filter length of said second portion is frequency-dependent.