EP1986321A3

Method for reduction of aliasing introduced by spectral envelope adjustment in real-valued filterbanks

Abstract

The present invention proposes a new method for improving the performance of a real-valued filterbank based spectral envelope adjuster. By adaptively locking the gain values for adjacent channels dependent on the sign of the channels, as defined in the application, reduced aliasing is achieved. Furthermore, the grouping of the channels during gain-calculation, gives an improved energy estimate of the real valued subband signals in the filterbank.

EP1986321A3, drawing sheet 1 — Sheet 1 of 1

Term

Term ended

Projected expiry passed 27 August 2023, 3.1 years ago.

1 sheet

Sheet 1

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Citations
Document	Relation	Office	Category	Cited during	Relevant claims
WO02080362A1	Cites	World Intellectual Property Organization (WIPO)	PX	Search report	1-15,18-20
US2003108214A1	Cites	United States of America	PA	Search report	1-24
US5732189A	Cites	United States of America	A	Search report	1-20
US6124895A	Cites	United States of America	A	Search report	1-20
WO9857436A2	Cites	World Intellectual Property Organization (WIPO)	A	Search report	1-20
BRANDENBURG K: "INTRODUCTION TO PERCEPTUAL CODING", COLLECTED PAPERS ON DIGITAL AUDIO BIT-RATE REDUCTION, XX, XX, no. 3.3, 1 January 1996 (1996-01-01), pages 23 - 30, XP002273511	Non-patent	–	–	Search report	–

147 members in 18 offices

This recordMember, by publication datePriority claim8 more offices are in the list below

Priority claims4

Priority claims
Document	Office	Kind	Date
0202770	Sweden	–	2002-09-18
0202770	Sweden	A	2002-09-18
06000181	European Patent Office (EPO)	A	2003-08-27
03750451	European Patent Office (EPO)	A	2003-08-27

Members147

Family members, oldest first
Document	Office	Kind
SE0202770D0	Sweden	D0	2002-09-18
CA2496665A1	Canada	A1	2004-04-01
CA2688871A1	Canada	A1	2004-04-01
CA2688916A1	Canada	A1	2004-04-01
CA2924913A1	Canada	A1	2004-04-01
CA2924914A1	Canada	A1	2004-04-01
CA2924915A1	Canada	A1	2004-04-01
CA3040083A1	Canada	A1	2004-04-01
WO2004027998A2	World Intellectual Property Organization (WIPO)	A2	2004-04-01
AU2003270114A1	Australia	A1	2004-04-08
WO2004027998A3	World Intellectual Property Organization (WIPO)	A3	2004-05-27
US2004117177A1	United States of America	A1	2004-06-17
NO20051861L	Norway	L	2005-04-15
NO20092676L	Norway	L	2005-04-15
NO20092677L	Norway	L	2005-04-15
NO20150250L	Norway	L	2005-04-15
NO20150891L	Norway	L	2005-04-15
NO20180074A1	Norway	A1	2005-04-15
NO20180075A1	Norway	A1	2005-04-15
NO20180076A1	Norway	A1	2005-04-15
NO20180077A1	Norway	A1	2005-04-15
NO20180078A1	Norway	A1	2005-04-15
NO20180181A1	Norway	A1	2005-04-15
NO20190931A1	Norway	A1	2005-04-15
EP1527517A2	European Patent Office (EPO)	A2	2005-05-04
KR20050054947A	Republic of Korea	A	2005-06-10
MXPA05002628A	Mexico	A	2005-09-08
CN1689226A	China	A	2005-10-26
EP1527517B1	European Patent Office (EPO)	B1	2006-01-11
HK1077413A	Hong Kong, China	A	2006-02-10
HK1077413A1	Hong Kong, China	A1	2006-02-10
AT315845T	Austria	T	2006-02-15
ATE315845T1	Austria	T1	2006-02-15
EP1635461A1	European Patent Office (EPO)	A1	2006-03-15
EP1643642A1	European Patent Office (EPO)	A1	2006-04-05
DE60303214D1	Germany	D1	2006-04-06
JP2006514314A	Japan	A	2006-04-27
ES2256773T3	Spain	T3	2006-07-16
DE60303214T2	Germany	T2	2006-09-21
KR20060111740A	Republic of Korea	A	2006-10-27
KR20060112618A	Republic of Korea	A	2006-11-01
AU2003270114B2	Australia	B2	2006-11-23
AU2006235812A1	Australia	A1	2006-11-23
AU2006235813A1	Australia	A1	2006-11-23
KR100697255B1	Republic of Korea	B1	2007-03-21
ZA200500873B	South Africa	B	2007-03-28
UA79301C2	Ukraine	C2	2007-06-11
EP1635461B1	European Patent Office (EPO)	B1	2007-11-21
DE60317722D1	Germany	D1	2008-01-03
US2008010061A1	United States of America	A1	2008-01-10
US2008015868A1	United States of America	A1	2008-01-17
ES2297600T3	Spain	T3	2008-05-01
DE60317722T2	Germany	T2	2008-09-25
EP1986321A2	European Patent Office (EPO)	A2	2008-10-29
CN100466471C	China	C	2009-03-04
AU2006235813B2	Australia	B2	2009-03-12
KR100890201B1	Republic of Korea	B1	2009-03-25
KR100890203B1	Republic of Korea	B1	2009-03-25
EP1986321A3This record	European Patent Office (EPO)	A3	2009-04-01
US7548864B2	United States of America	B2	2009-06-16
JP2009169435A	Japan	A	2009-07-30
JP2009171610A	Japan	A	2009-07-30
CN101505144A	China	A	2009-08-12
CN101505145A	China	A	2009-08-12
US7577570B2	United States of America	B2	2009-08-18
JP4328720B2	Japan	B2	2009-09-09
US7590543B2	United States of America	B2	2009-09-15
US2009234646A1	United States of America	A1	2009-09-17
AU2006235812B2	Australia	B2	2009-10-01
US2009259479A1	United States of America	A1	2009-10-15
HK1129169A	Hong Kong, China	A	2009-11-20
HK1129169A1	Hong Kong, China	A1	2009-11-20
HK1131473A	Hong Kong, China	A	2010-03-05
HK1131473A1	Hong Kong, China	A1	2010-03-05
EP1643642B1	European Patent Office (EPO)	B1	2010-08-18
AT478471T	Austria	T	2010-09-15
ATE478471T1	Austria	T1	2010-09-15
DE60333872D1	Germany	D1	2010-09-30
EP2239847A2	European Patent Office (EPO)	A2	2010-10-13
EP1986321B1	European Patent Office (EPO)	B1	2010-10-20
AT485628T	Austria	T	2010-11-15
ATE485628T1	Austria	T1	2010-11-15
DK1643642T3	Denmark	T3	2010-11-29
DE60334653D1	Germany	D1	2010-12-02
JP2011010346A	Japan	A	2011-01-13
DK1986321T3	Denmark	T3	2011-01-24
ES2350746T3	Spain	T3	2011-01-26
CA2496665C	Canada	C	2011-02-15
US2011054914A1	United States of America	A1	2011-03-03
ES2354002T3	Spain	T3	2011-03-09
US8108209B2	United States of America	B2	2012-01-31
US8145475B2	United States of America	B2	2012-03-27
EP2239847A3	European Patent Office (EPO)	A3	2012-03-28
CN101505144B	China	B	2012-05-16
CN101505145B	China	B	2012-05-23
JP2012123428A	Japan	A	2012-06-28
US2012284033A1	United States of America	A1	2012-11-08
US2012284034A1	United States of America	A1	2012-11-08
US8346566B2	United States of America	B2	2013-01-01
JP5132627B2	Japan	B2	2013-01-30

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2023-10-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
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2023-10-15	ExpiryMK07	MK07	AT
2023-10-03	Ep patent has lapsedLapsedEUG	EUG	SE
2023-09-29	Patent expired because of reaching the maximum lifetime of a patentExpiredMK	MK	BE
2023-09-20	Patent expired after termination of 20 yearsExpiredPE20	PE20	GB
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2023-08-27	Expiry of rightR071	R071	DE
2023-06-21	Opt-out of the competence of the unified patent court (upc) registeredP01	P01	EP
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2023-01-24	Change of ownershipPD	PD	BE
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2022-07-21	Fee paymentPLFP	PLFP	FR
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2016-08-25	Fee paymentPLFP	PLFP	FR
2013-10-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2013-09-30	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
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2012-05-23	Patent lapsedLapsedMM4A	MM4A	IE
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2010-05-12	Title (correction)APPARATUS FOR ASSESSING AN ENERGY OF A SIGNAL HAVING SUBBAND SIGNALS AND CORRESPONDING METHODRTI1	RTI1	EP
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Method for reduction of aliasing introduced by spectral envelope adjustment in real-valued filterbanks

Abstract

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