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1. 发明授权

US09980073B2 Method and apparatus for compressing and decompressing a higher order ambisonics signal representation 有权
公开(公告)号：US09980073B2
公开(公告)日：2018-05-22
申请号：US15221354
申请日：2016-07-27
申请人： DOLBY LABORATORIES LICENSING CORPORATION
发明人： Alexander Krüger , Sven Kordon , Johannes Boehm , Johann-Markus Batke
IPC分类号： G10L19/00 , H04S3/00 , G10L19/008 , H04H20/89 , G10L19/20 , H04S3/02
CPC分类号： H04S3/008 , G10L19/008 , G10L19/20 , H04H20/89 , H04S3/02 , H04S2420/11
摘要： A method and apparatus for decompressing a Higher Order Ambisonics (HOA) signal representation is disclosed. The apparatus includes an input interface that receives an encoded directional signal and an encoded ambient signal and an audio decoder that perceptually decodes the encoded directional signal and encoded ambient signal to produce a decoded directional signal and a decoded ambient signal, respectively. The apparatus further includes an extractor for obtaining side information related to the directional signal and an inverse transformer for converting the decoded ambient signal from a spatial domain to an HOA domain representation of the ambient signal. The apparatus also includes a synthesizer for recomposing a Higher Order Ambisonics (HOA) signal from the HOA domain representation of the ambient signal and the decoded directional signal. The side information includes a direction of the directional signal selected from a set of uniformly spaced directions.

2. 发明申请

US20180220248A1 METHOD AND APPARATUS FOR COMPRESSING AND DECOMPRESSING A HIGHER ORDER AMBISONICS SIGNAL REPRESENTATION 审中-公开
公开(公告)号：US20180220248A1
公开(公告)日：2018-08-02
申请号：US15927985
申请日：2018-03-21
申请人： DOLBY LABORATORIES LICENSING CORPORATION
发明人： Alexander Krüger , Sven Kordon , Johannes Boehm , Johann-Markus Batke
IPC分类号： H04S3/00 , H04H20/89 , G10L19/20 , G10L19/008 , H04S3/02
CPC分类号： H04S3/008 , G10L19/008 , G10L19/20 , H04H20/89 , H04S3/02 , H04S2420/11
摘要： A method and apparatus for decompressing a Higher Order Ambisonics (HOA) signal representation is disclosed. The apparatus includes an input interface that receives an encoded directional signal and an encoded ambient signal and an audio decoder that perceptually decodes the encoded directional signal and encoded ambient signal to produce a decoded directional signal and a decoded ambient signal, respectively. The apparatus further includes an extractor for obtaining side information related to the directional signal and an inverse transformer for converting the decoded ambient signal from a spatial domain to an HOA domain representation of the ambient signal. The apparatus also includes a synthesizer for recomposing a Higher Order Ambisonics (HOA) signal from the HOA domain representation of the ambient signal and the decoded directional signal. The side information includes a direction of the directional signal selected from a set of uniformly spaced directions.

3. 发明授权

US10304469B2 Methods and apparatus for encoding and decoding multi-channel HOA audio signals 有权
公开(公告)号：US10304469B2
公开(公告)日：2019-05-28
申请号：US15685252
申请日：2017-08-24
申请人： DOLBY LABORATORIES LICENSING CORPORATION
发明人： Johannes Boehm , Sven Kordon , Alexander Krüger , Peter Jax
IPC分类号： H04S3/02 , G10L19/02 , G10L19/008 , G10L19/012 , G10L19/038
摘要： A method for encoding multi-channel HOA audio signals for noise reduction comprises steps of decorrelating the channels using an inverse adaptive DSHT, the inverse adaptive DSHT comprising a rotation operation and an inverse DSHT, with the rotation operation rotating the spatial sampling grid of the iDSHT, perceptually encoding each of the decorrelated channels, encoding rotation information, the rotation information comprising parameters defining said rotation operation, and transmitting or storing the perceptually encoded audio channels and the encoded rotation information.

4. 发明授权

US10390164B2 Method and apparatus for compressing and decompressing a higher order ambisonics signal representation 有权
公开(公告)号：US10390164B2
公开(公告)日：2019-08-20
申请号：US15927985
申请日：2018-03-21
申请人： DOLBY LABORATORIES LICENSING CORPORATION
发明人： Alexander Krüger , Sven Kordon , Johannes Boehm , Johann-Markus Batke
IPC分类号： G10L19/00 , H04S3/00 , G10L19/008 , H04H20/89 , G10L19/20 , H04S3/02
摘要： A method and apparatus for decompressing a Higher Order Ambisonics (HOA) signal representation is disclosed. The apparatus includes an input interface that receives an encoded directional signal and an encoded ambient signal and an audio decoder that perceptually decodes the encoded directional signal and encoded ambient signal to produce a decoded directional signal and a decoded ambient signal, respectively. The apparatus further includes an extractor for obtaining side information related to the directional signal and an inverse transformer for converting the decoded ambient signal from a spatial domain to an HOA domain representation of the ambient signal. The apparatus also includes a synthesizer for recomposing a Higher Order Ambisonics (HOA) signal from the HOA domain representation of the ambient signal and the decoded directional signal. The side information includes a direction of the directional signal selected from a set of uniformly spaced directions.

5. 发明申请

US20160337775A1 METHOD AND APPARATUS FOR COMPRESSING AND DECOMPRESSING A HIGHER ORDER AMBISONICS SIGNAL REPRESENTATION 有权
标题翻译：用于压缩和分解更高秩序的健康信号表示的方法和装置
公开(公告)号：US20160337775A1
公开(公告)日：2016-11-17
申请号：US15221354
申请日：2016-07-27
申请人： DOLBY LABORATORIES LICENSING CORPORATION
发明人： Alexander Krüger , Sven Kordon , Johannes Boehm , Johann-Markus Batke
IPC分类号： H04S3/00 , G10L19/20 , G10L19/008
CPC分类号： H04S3/008 , G10L19/008 , G10L19/20 , H04H20/89 , H04S3/02 , H04S2420/11
摘要： A method and apparatus for decompressing a Higher Order Ambisonics (HOA) signal representation is disclosed. The apparatus includes an input interface that receives an encoded directional signal and an encoded ambient signal and an audio decoder that perceptually decodes the encoded directional signal and encoded ambient signal to produce a decoded directional signal and a decoded ambient signal, respectively. The apparatus further includes an extractor for obtaining side information related to the directional signal and an inverse transformer for converting the decoded ambient signal from a spatial domain to an HOA domain representation of the ambient signal. The apparatus also includes a synthesizer for recomposing a Higher Order Ambisonics (HOA) signal from the HOA domain representation of the ambient signal and the decoded directional signal. The side information includes a direction of the directional signal selected from a set of uniformly spaced directions.
摘要翻译：公开了一种用于解压缩高阶Ambisonics（HOA）信号表示的方法和装置。该装置包括输入接口，其接收编码的定向信号和经编码的环境信号，以及音频解码器，其分别感知地解码编码的方向信号和编码的环境信号以产生解码的定向信号和解码的环境信号。该装置还包括一个提取器，用于获取与定向信号有关的侧面信息;以及一个逆变换器，用于将解码的环境信号从空间域转换为环境信号的HOA域表示。该装置还包括合成器，用于从环境信号的HOA域表示和解码的定向信号重构高阶环境（HOA）信号。侧信息包括从一组均匀间隔的方向选择的方向信号的方向。

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