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    Methods and apparatus for adjusting a level of an audio signal
    21.
    发明授权
    Methods and apparatus for adjusting a level of an audio signal 有权

    公开(公告)号：US10403297B2

    公开(公告)日：2019-09-03

    申请号：US16226289

    申请日：2018-12-19

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Mark F. Davis

    IPC: G01L19/00 ,  G10L19/06 ,  G10L19/025 ,  G10L19/005 ,  G10L19/008 ,  G10L19/02 ,  G10L19/018 ,  G10L19/26 ,  H04S3/00

    Abstract: A method performed in an audio decoder for decoding M encoded audio channels representing N audio channels is disclosed. The method includes receiving a bitstream containing the M encoded audio channels and a set of spatial parameters, decoding the M encoded audio channels, and extracting the set of spatial parameters from the bitstream. The method also includes analyzing the M audio channels to detect a location of a transient, decorrelating the M audio channels, and deriving N audio channels from the M audio channels and the set of spatial parameters. A first decorrelation technique is applied to a first subset of each audio channel and a second decorrelation technique is applied to a second subset of each audio channel. The first decorrelation technique represents a first mode of operation of a decorrelator, and the second decorrelation technique represents a second mode of operation of the decorrelator.

    Reconstructing Audio Signals with Multiple Decorrelation Techniques
    23.
    发明申请
    Reconstructing Audio Signals with Multiple Decorrelation Techniques 有权

    公开(公告)号：US20170178652A1

    公开(公告)日：2017-06-22

    申请号：US15446693

    申请日：2017-03-01

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Mark F. Davis

    IPC: G10L19/06 ,  G10L19/008 ,  G10L19/26 ,  G10L19/025

    CPC classification number: G10L19/06 ,  G10L19/005 ,  G10L19/008 ,  G10L19/018 ,  G10L19/02 ,  G10L19/0204 ,  G10L19/025 ,  G10L19/26 ,  H04S3/00 ,  H04S3/008

    Abstract: A method performed in an audio decoder for decoding M encoded audio channels representing N audio channels is disclosed. The method includes receiving a bitstream containing the M encoded audio channels and a set of spatial parameters, decoding the M encoded audio channels, and extracting the set of spatial parameters from the bitstream. The method also includes analyzing the M audio channels to detect a location of a transient, decorrelating the M audio channels, and deriving N audio channels from the M audio channels and the set of spatial parameters. A first decorrelation technique is applied to a first subset of each audio channel and a second decorrelation technique is applied to a second subset of each audio channel. The first decorrelation technique represents a first mode of operation of a decorrelator, and the second decorrelation technique represents a second mode of operation of the decorrelator.

    Reconstructing Audio Signals with Multiple Decorrelation Techniques
    24.
    发明申请
    Reconstructing Audio Signals with Multiple Decorrelation Techniques 有权

    公开(公告)号：US20170178651A1

    公开(公告)日：2017-06-22

    申请号：US15446678

    申请日：2017-03-01

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Mark F. Davis

    IPC: G10L19/06 ,  G10L19/008 ,  G10L19/26 ,  G10L19/025

    CPC classification number: G10L19/06 ,  G10L19/005 ,  G10L19/008 ,  G10L19/018 ,  G10L19/02 ,  G10L19/0204 ,  G10L19/025 ,  G10L19/26 ,  H04S3/00 ,  H04S3/008

    Abstract: A method performed in an audio decoder for decoding M encoded audio channels representing N audio channels is disclosed. The method includes receiving a bitstream containing the M encoded audio channels and a set of spatial parameters, decoding the M encoded audio channels, and extracting the set of spatial parameters from the bitstream. The method also includes analyzing the M audio channels to detect a location of a transient, decorrelating the M audio channels, and deriving N audio channels from the M audio channels and the set of spatial parameters. A first decorrelation technique is applied to a first subset of each audio channel and a second decorrelation technique is applied to a second subset of each audio channel. The first decorrelation technique represents a first mode of operation of a decorrelator, and the second decorrelation technique represents a second mode of operation of the decorrelator.

    Method, apparatus, and storage medium for decoding encoded audio channels
    25.
    发明授权
    Method, apparatus, and storage medium for decoding encoded audio channels 有权
    用于解码编码音频通道的方法，装置和存储介质

    公开(公告)号：US09311922B2

    公开(公告)日：2016-04-12

    申请号：US14614672

    申请日：2015-02-05

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Mark F. Davis

    IPC: G10L19/00 ,  G10L19/008 ,  G10L19/02 ,  H04S3/00

    CPC classification number: G10L19/06 ,  G10L19/005 ,  G10L19/008 ,  G10L19/018 ,  G10L19/02 ,  G10L19/0204 ,  G10L19/025 ,  G10L19/26 ,  H04S3/00 ,  H04S3/008

    Abstract: Multiple channels of audio are combined either to a monophonic composite signal or to multiple channels of audio along with related auxiliary information from which multiple channels of audio are reconstructed, including improved downmixing of multiple audio channels to a monophonic audio signal or to multiple audio channels and improved decorrelation of multiple audio channels derived from a monophonic audio channel or from multiple audio channels. Aspects of the disclosed invention are usable in audio encoders, decoders, encode/decode systems, downmixers, upmixers, and decorrelators.

    Abstract translation: 音频的多个通道被组合到单声道复合信号或多个音频通道以及重构多个声道的相关辅助信息，包括将多个音频通道改进到单声道音频信号或多个音频通道的下混合，以及 改进了从单声道音频通道或多个音频通道导出的多个音频通道的去相关。 所公开的发明的方面可用于音频编码器，解码器，编码/解码系统，降混器，上混合器和去相关器。

    Methods and apparatus for adjusting a level of an audio signal
    28.
    发明授权
    Methods and apparatus for adjusting a level of an audio signal 有权

    公开(公告)号：US10460740B2

    公开(公告)日：2019-10-29

    申请号：US16226252

    申请日：2018-12-19

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Mark F. Davis

    IPC: G10L19/06 ,  G10L19/008 ,  G10L19/02 ,  G10L19/005 ,  G10L19/018 ,  G10L19/025 ,  G10L19/26 ,  H04S3/00

    Abstract: A method performed in an audio decoder for decoding M encoded audio channels representing N audio channels is disclosed. The method includes receiving a bitstream containing the M encoded audio channels and a set of spatial parameters, decoding the M encoded audio channels, and extracting the set of spatial parameters from the bitstream. The method also includes analyzing the M audio channels to detect a location of a transient, decorrelating the M audio channels, and deriving N audio channels from the M audio channels and the set of spatial parameters. A first decorrelation technique is applied to a first subset of each audio channel and a second decorrelation technique is applied to a second subset of each audio channel. The first decorrelation technique represents a first mode of operation of a decorrelator, and the second decorrelation technique represents a second mode of operation of the decorrelator.

    Reconstructing Audio Signals With Multiple Decorrelation Techniques
    29.
    发明申请
    Reconstructing Audio Signals With Multiple Decorrelation Techniques 审中-公开

    公开(公告)号：US20190147898A1

    公开(公告)日：2019-05-16

    申请号：US16226252

    申请日：2018-12-19

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Mark F. Davis

    IPC: G10L19/06 ,  G10L19/025 ,  G10L19/005 ,  G10L19/008 ,  G10L19/26 ,  G10L19/02 ,  G10L19/018

    Abstract: A method performed in an audio decoder for decoding M encoded audio channels representing N audio channels is disclosed. The method includes receiving a bitstream containing the M encoded audio channels and a set of spatial parameters, decoding the M encoded audio channels, and extracting the set of spatial parameters from the bitstream. The method also includes analyzing the M audio channels to detect a location of a transient, decorrelating the M audio channels, and deriving N audio channels from the M audio channels and the set of spatial parameters. A first decorrelation technique is applied to a first subset of each audio channel and a second decorrelation technique is applied to a second subset of each audio channel. The first decorrelation technique represents a first mode of operation of a decorrelator, and the second decorrelation technique represents a second mode of operation of the decorrelator.

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