CA3026283A1 - Reconstructing audio signals with multiple decorrelation techniques - Google Patents

Reconstructing audio signals with multiple decorrelation techniques

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Publication number
CA3026283A1
CA3026283A1 CA3026283A CA3026283A CA3026283A1 CA 3026283 A1 CA3026283 A1 CA 3026283A1 CA 3026283 A CA3026283 A CA 3026283A CA 3026283 A CA3026283 A CA 3026283A CA 3026283 A1 CA3026283 A1 CA 3026283A1
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Prior art keywords
audio channels
audio signals
audio
decorrelation techniques
multiple decorrelation
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
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CA3026283A
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French (fr)
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CA3026283C (en
Inventor
Mark Franklin Davis
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Dolby Laboratories Licensing Corp
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Dolby Laboratories Licensing Corp
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Priority claimed from CA2992051A external-priority patent/CA2992051C/en
Publication of CA3026283A1 publication Critical patent/CA3026283A1/en
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Publication of CA3026283C publication Critical patent/CA3026283C/en
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Abstract

Systems and methods of audio signal processing are provided that relate to improved upmixing, whereby N audio channels are derived from M audio channels, a decorrelated version of the M audio channels and a set of spatial parameters.
The set of spatial parameters includes an amplitude parameter, a correlation parameter and a phase parameter. The M audio channels are decorrelated using multiple decorrelation techniques to obtain the decorrelated version of the M audio channels. This can be used, for example, for generating an N audio channel upmix.
CA3026283A 2001-06-14 2005-02-28 Reconstructing audio signals with multiple decorrelation techniques Active CA3026283C (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US57997401P 2001-06-14 2001-06-14
US54936804P 2004-03-01 2004-03-01
US60/549368 2004-03-01
US60/579974 2004-06-14
US58825604P 2004-07-14 2004-07-14
US60/588256 2004-07-14
CA2992051A CA2992051C (en) 2004-03-01 2005-02-28 Reconstructing audio signals with multiple decorrelation techniques and differentially coded parameters

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA2992051A Division CA2992051C (en) 2001-06-14 2005-02-28 Reconstructing audio signals with multiple decorrelation techniques and differentially coded parameters

Publications (2)

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CA3026283A1 true CA3026283A1 (en) 2005-09-15
CA3026283C CA3026283C (en) 2019-04-09

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CA3026283A Active CA3026283C (en) 2001-06-14 2005-02-28 Reconstructing audio signals with multiple decorrelation techniques

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CA (1) CA3026283C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110619882A (en) * 2013-07-29 2019-12-27 杜比实验室特许公司 System and method for reducing temporal artifacts of transient signals in decorrelator circuits
CN111179956A (en) * 2013-10-21 2020-05-19 杜比国际公司 Parametric reconstruction of audio signals
CN112967729A (en) * 2021-02-24 2021-06-15 辽宁省视讯技术研究有限公司 Vehicle-mounted local audio fuzzy processing method and device
CN117476026A (en) * 2023-12-26 2024-01-30 芯瞳半导体技术(山东)有限公司 Method, system, device and storage medium for mixing multipath audio data

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110619882A (en) * 2013-07-29 2019-12-27 杜比实验室特许公司 System and method for reducing temporal artifacts of transient signals in decorrelator circuits
CN110619882B (en) * 2013-07-29 2023-04-04 杜比实验室特许公司 System and method for reducing temporal artifacts of transient signals in decorrelator circuits
CN111179956A (en) * 2013-10-21 2020-05-19 杜比国际公司 Parametric reconstruction of audio signals
CN111179956B (en) * 2013-10-21 2023-08-11 杜比国际公司 Parametric reconstruction of audio signals
US11769516B2 (en) 2013-10-21 2023-09-26 Dolby International Ab Parametric reconstruction of audio signals
CN112967729A (en) * 2021-02-24 2021-06-15 辽宁省视讯技术研究有限公司 Vehicle-mounted local audio fuzzy processing method and device
CN117476026A (en) * 2023-12-26 2024-01-30 芯瞳半导体技术(山东)有限公司 Method, system, device and storage medium for mixing multipath audio data

Also Published As

Publication number Publication date
CA3026283C (en) 2019-04-09

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