EP 3987822 A1 20220427 - SOUND PICKUP DEVICE WITH IMPROVED MICROPHONE NETWORK
Title (en)
SOUND PICKUP DEVICE WITH IMPROVED MICROPHONE NETWORK
Title (de)
TONAUFNAHMEVORRICHTUNG MIT VERBESSERTEM MIKROFONNETZWERK
Title (fr)
DISPOSITIF DE CAPTATION SONORE A RÉSEAU DE MICROPHONES PERFECTIONNÉ
Publication
Application
Priority
- FR 2020050852 W 20200520
- FR 1906840 A 20190624
Abstract (en)
[origin: WO2020260780A1] The invention relates to a sound pickup device, comprising at least: - a plurality of microphone capsules distributed over a portion P of a sphere S, the sphere portion being circumscribed between two or three planes that are perpendicular to each other, the three planes intersecting at a point corresponding to the centre of the sphere S, and the two planes intersecting at a straight line passing through the centre of the sphere S, and the sphere portion P being such that P = n S/8, where n = 1.2, - a processing unit connected to the capsules to receive the signals picked up by the capsules, the processing unit being designed to: *matrix the signals in an ambisonic representation which retains only the ambisonic components associated with spherical harmonics which are symmetrical in relation to at least two of the aforementioned planes, and * process a matrix produced in this way in order to identify at least one sound source in a space surrounding the sphere portion and interpret a sound signal originating from said source.
IPC 8 full level
H04R 1/40 (2006.01); H04R 3/00 (2006.01); H04S 7/00 (2006.01)
CPC (source: EP US)
H04R 1/403 (2013.01 - EP); H04R 1/406 (2013.01 - US); H04R 3/005 (2013.01 - EP US); H04S 3/02 (2013.01 - US); H04R 2201/401 (2013.01 - EP US); H04S 7/30 (2013.01 - EP); H04S 2400/01 (2013.01 - US); H04S 2400/15 (2013.01 - EP US); H04S 2420/11 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
FR 3096550 A1 20201127; FR 3096550 B1 20210604; EP 3987822 A1 20220427; EP 3987822 B1 20230705; US 11895478 B2 20240206; US 2022256302 A1 20220811; WO 2020260780 A1 20201230
DOCDB simple family (application)
FR 1906840 A 20190624; EP 20739743 A 20200520; FR 2020050852 W 20200520; US 202017622679 A 20200520