Bibliografische Daten

Dokument EP000001845699A1 (Seiten: 39)

Bibliografische Daten Dokument EP000001845699A1 (Seiten: 39)
INID Kriterium Feld Inhalt
54 Titel TI [DE] Audiosignaldekorrelator
[EN] Audio signal decorrelator
[FR] Décorrelateur de signaux audio
71/73 Anmelder/Inhaber PA FRAUNHOFER GES FORSCHUNG, DE
72 Erfinder IN BUCHNER HERBERT, DE ; HERRE JUERGEN, DE
22/96 Anmeldedatum AD 14.06.2006
21 Anmeldenummer AN 06012271
Anmeldeland AC EP
Veröffentlichungsdatum PUB 17.10.2007
33
31
32		 Priorität PRC
PRN
PRD		 EP
06007833
20060413
51 IPC-Hauptklasse ICM H04M 9/08 (2006.01)
51 IPC-Nebenklasse ICS G10L 19/00 (2006.01)
IPC-Zusatzklasse ICA
IPC-Indexklasse ICI
Gemeinsame Patentklassifikation CPC G10L 19/008
G10L 2021/02082
G10L 21/0208
H04M 9/08
H04M 9/082
MCD-Hauptklasse MCM H04M 9/08 (2006.01)
MCD-Nebenklasse MCS G10L 19/008 (2013.01)
G10L 19/00 (2006.01)
G10L 21/02 (2006.01)
MCD-Zusatzklasse MCA G10L 21/0208 (2013.01)
57 Zusammenfassung 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 Entgegengehaltene Patentdokumente/Zitate,
in Recherche ermittelt		 CT EP000000984609A2
US000006895093B1
56 Entgegengehaltene Patentdokumente/Zitate,
vom Anmelder genannt		 CT
56 Entgegengehaltene Nichtpatentliteratur/Zitate,
in Recherche ermittelt		 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 Entgegengehaltene Nichtpatentliteratur/Zitate,
vom Anmelder genannt		 CTNP
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Prüfstoff-IPC ICP G10L 19/00
H04M 9/08