EP 0559530 B1 19970806 - Method and system for artificial spatial processing of digital audio signals
Title (en)
Method and system for artificial spatial processing of digital audio signals
Title (de)
Verfahren und Vorrichtung für künstliche Raumklangeffekte von digitalen Audiosignalen
Title (fr)
Procédé et système de spatialisation artificielle de signaux audio-numériques
Publication
Application
Priority
FR 9202528 A 19920303
Abstract (en)
[origin: EP0559530A1] The invention relates to a method and a system for artificial spatial processing of digital audio signals x(k). They consist in or make it possible to effect on elementary signals xi(k), replicas of the digital audio signal, the different delays producing delayed elementary signals (seri) which, after weighting, are summed with the signal x(k) to produce the spatially processed digital audio signal y(k). A plurality of linear combinations of the signals (seri) as combined delayed elementary signals (serci) is summed with the elementary signals xi(k). In order to simulate a sluggish reverberation, the linear combinations are effected through unit looping, and an attenuation hi( omega ), a decreasing monotonic function of the reverberation time Tr( omega ) to be simulated and proportional to the delay, is effected with each delay. A spectral correction prior to weighted summation is effected satisfying the relation: <IMAGE> tau i denoting the value of each delay increased by the phase delay due to the attenuation. <IMAGE>
IPC 1-7
IPC 8 full level
G10K 15/12 (2006.01); G10K 15/00 (2006.01); H03H 17/00 (2006.01); H04S 1/00 (2006.01)
CPC (source: EP US)
H04S 7/305 (2013.01 - EP US); H04S 1/007 (2013.01 - EP US)
Designated contracting state (EPC)
DE GB
DOCDB simple family (publication)
EP 0559530 A1 19930908; EP 0559530 B1 19970806; DE 69312765 D1 19970911; DE 69312765 T2 19980219; FR 2688371 A1 19930910; FR 2688371 B1 19970523; JP 3496953 B2 20040216; JP H0643890 A 19940218; US 5491754 A 19960213
DOCDB simple family (application)
EP 93400503 A 19930226; DE 69312765 T 19930226; FR 9202528 A 19920303; JP 4304693 A 19930303; US 1984693 A 19930219