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. 28, 2017
Filed:
Sep. 05, 2013
Orange, Paris, FR;
Romain Deprez, Paris, FR;
Rozenn Nicol, La Roche Derrien, FR;
ORANGE, Paris, FR;
Abstract
A method of calibrating a sound restitution assembly for a multichannel sound signal, which includes a plurality of loudspeakers. The method includes: obtaining multidirectional impulse responses of the loudspeakers to reproduction of a predetermined audio signal; analyzing the multidirectional impulse responses obtained, in a domain of spatio-temporal representation, over at least one time window encompassing the instants of arrival of the first reflections of the audio signal reproduced to determine a set of characteristics of the first reflections; comparing the amplitude of each of the reflections with a predetermined perceptibility threshold and identifying imperceptible reflections for which the amplitude is below the predetermined threshold; modifying the impulse responses obtained to obtain perceptive impulse responses, by deleting the reflections identified as imperceptible; and determining a filtering matrix on the basis of the perceptive impulse responses for an application of this filtering matrix to the multichannel audio signal before sound restitution.