EP 3050056 B1 20180905 - TIME-FREQUENCY DIRECTIONAL PROCESSING OF AUDIO SIGNALS
Title (en)
TIME-FREQUENCY DIRECTIONAL PROCESSING OF AUDIO SIGNALS
Title (de)
DIREKTIONALE ZEITFREQUENZVERARBEITUNG VON AUDIOSIGNALEN
Title (fr)
TRAITEMENT DIRECTIONNEL TEMPS-FRÉQUENCE DE SIGNAUX AUDIO
Publication
Application
Priority
- US 201361881678 P 20130924
- US 201361881709 P 20130924
- US 201361919851 P 20131223
- US 201314138587 A 20131223
- US 201461978707 P 20140411
- US 2014057122 W 20140924
Abstract (en)
[origin: WO2015048070A1] An approach to processing of acoustic signals acquired at a user's device include one or both of acquisition of parallel signals from a set of closely spaced microphones, and use of a multi-tier computing approach in which some processing is performed at the user's device and further processing is performed at one or more server computers in communication with the user's device. The acquired signals are processed using time versus frequency estimates of both energy content as well as direction of arrival. In some examples, a non-negative matrix or tensor factorization approach is used to identify multiple sources each associated with a corresponding direction of arrival of a signal from that source. In some examples, data characterizing direction of arrival information is passed from the user's device to a server computer where direction-based processing is performed.
IPC 8 full level
G10L 21/0272 (2013.01)
CPC (source: EP)
G10L 21/0272 (2013.01)
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
DOCDB simple family (publication)
WO 2015048070 A1 20150402; CN 105580074 A 20160511; CN 105580074 B 20191018; EP 3050056 A1 20160803; EP 3050056 B1 20180905
DOCDB simple family (application)
US 2014057122 W 20140924; CN 201480052202 A 20140924; EP 14780737 A 20140924