Bibliographic data

Document EP000001845699A1 (Pages: 39)

Bibliographic data Document EP000001845699A1 (Pages: 39)
INID Criterion Field Contents
54 Title TI [DE] Audiosignaldekorrelator
[EN] Audio signal decorrelator
[FR] Décorrelateur de signaux audio
71/73 Applicant/owner PA FRAUNHOFER GES FORSCHUNG, DE
72 Inventor IN BUCHNER HERBERT, DE ; HERRE JUERGEN, DE
22/96 Application date AD Jun 14, 2006
21 Application number AN 06012271
Country of application AC EP
Publication date PUB Oct 17, 2007
33
31
32		 Priority data PRC
PRN
PRD		 EP
06007833
20060413
51 IPC main class ICM H04M 9/08 (2006.01)
51 IPC secondary class ICS G10L 19/00 (2006.01)
IPC additional class ICA
IPC index class ICI
Cooperative patent classification CPC G10L 19/008
G10L 2021/02082
G10L 21/0208
H04M 9/08
H04M 9/082
MCD main class MCM H04M 9/08 (2006.01)
MCD secondary class MCS G10L 19/008 (2013.01)
G10L 19/00 (2006.01)
G10L 21/02 (2006.01)
MCD additional class MCA G10L 21/0208 (2013.01)
57 Abstract AB [EN] An audio signal decorrelator (100) for deriving an output audio signal (170) from an input audio signal (112) comprises a frequency analyzer (110) for extracting a first partial signal (120) and a second partial signal (122) from the input audio signal, the first partial signal being descriptive of an audio content in a first audio frequency range, the second partial signal being descriptive of an audio content in a second audio frequency range, the first audio frequency range having higher frequencies compared to the second audio frequency range. The audio signal decorrelator further comprises a partial signal modifier (140) for modifying the first partial signal, to obtain a first processed partial signal (150), and the second partial signal, to obtain a second processed partial signal (152), so that a modulation amplitude of a time variant phase shift or time variant delay applied to the first partial signal is higher than a modulation amplitude of a time variant phase shift or a time variant delay applied to the second partial signal, or for modifying only the first partial signal, so that a time variant phase shift or a time variant delay is applied to the first partial signal.
56 Cited documents identified in the search CT EP000000984609A2
US000006895093B1
56 Cited documents indicated by the applicant CT
56 Cited non-patent literature identified in the search CTNP BENESTY J ET AL: "A better understanding and an improved solution to the problems of stereophonic acoustic echo cancellation", ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, 1997. ICASSP-97., 1997 IEEE INTERNATIONAL CONFERENCE ON MUNICH, GERMANY 21-24 APRIL 1997, LOS ALAMITOS, CA, USA,IEEE COMPUT. SOC, US, vol. 1, 21 April 1997 (1997-04-21), pages 303 - 306, XP010226195, ISBN: 0-8186-7919-0 0
56 Cited non-patent literature indicated by the applicant CTNP
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Search file IPC ICP G10L 19/00
H04M 9/08