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公开(公告)号：US20230037845A1
公开(公告)日：2023-02-09
申请号：US17817251
申请日：2022-08-03
发明人： Erik NORVELL , Fredrik JANSSON
IPC分类号： G10L19/012 , G10L19/008 , G10L19/032 , G10L19/04 , G10L19/06 , G10L19/00
摘要： A method, system, and computer program to encode and decode a channel coherence parameter applied on a frequency band basis, where the coherence parameters of each frequency band form a coherence vector. The coherence vector is encoded and decoded using a predictive scheme followed by a variable bit rate entropy coding.
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公开(公告)号：US20240347066A1
公开(公告)日：2024-10-17
申请号：US18643227
申请日：2024-04-23
发明人： Erik NORVELL , Fredrik JANSSON
IPC分类号： G10L19/012 , G10L19/00 , G10L19/008 , G10L19/032 , G10L19/04 , G10L19/06 , H04W76/28
CPC分类号： G10L19/012 , G10L19/0017 , G10L19/008 , G10L19/032 , G10L19/04 , G10L19/06 , H04W76/28
摘要： A method, system, and computer program to encode and decode a channel coherence parameter applied on a frequency band basis, where the coherence parameters of each frequency band form a coherence vector. The coherence vector is encoded and decoded using a predictive scheme followed by a variable bit rate entropy coding.
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公开(公告)号：US20210272575A1
公开(公告)日：2021-09-02
申请号：US17256073
申请日：2019-06-26
IPC分类号： G10L19/012 , G10L19/008 , G10L25/84
摘要： A method for generating a comfort noise (CN) parameter is provided. The method includes receiving an audio input; detecting, with a Voice Activity Detector (VAD), a current inactive segment in the audio input; as a result of detecting, with the VAD, the current inactive segment in the audio input, calculating a CN parameter CNused; and providing the CN parameter CNused to a decoder. The CN parameter CNused is calculated based at least in part on the current inactive segment and a previous inactive segment.
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公开(公告)号：US20170302598A1
公开(公告)日：2017-10-19
申请号：US15514068
申请日：2014-11-04
发明人： Fredrik JANSSON , Erlendur KARLSSON , Jonas LUNDBERG , Yang ZUO
IPC分类号： H04L12/861 , H04L29/06
CPC分类号： H04L49/9005 , H04J3/0632 , H04L47/2416 , H04L47/283 , H04L65/4084 , H04L65/601 , H04L65/602 , H04L65/607 , H04L65/80
摘要： It is presented a method for managing a jitter buffer depth for receiving real-time communication. The method is performed in a receiver and comprises the steps of: determining an adaptive bitrate state of the receiver when a current capacity of a communication channel for receiving the real-time communication is below a maximum bitrate for receiving the real-time communication; and increasing a depth of a jitter buffer for receiving the real-time communication when the adaptive bitrate state is determined.
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公开(公告)号：US20240161758A1
公开(公告)日：2024-05-16
申请号：US18516046
申请日：2023-11-21
发明人： Erik NORVELL , Fredrik JANSSON
IPC分类号： G10L19/012 , G10L19/00 , G10L19/008 , G10L19/032 , G10L19/04 , G10L19/06
CPC分类号： G10L19/012 , G10L19/0017 , G10L19/008 , G10L19/032 , G10L19/04 , G10L19/06 , H04W76/28
摘要： A method for generation of comfort noise for at least two audio channels. The method comprises determining a spatial coherence between audio signals on the respective audio channels, wherein at least one spatial coherence value per frame and frequency band is determined to form a vector of spatial coherence values. A vector of predicted spatial coherence values is formed by a weighted combination of a first coherence prediction and a second coherence prediction that are combined using a weight factor α. The method comprises signaling information about the weight factor α to the receiving node, for enabling the generation of the comfort noise for the at least two audio channels at the receiving node.
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公开(公告)号：US20230410820A1
公开(公告)日：2023-12-21
申请号：US18307319
申请日：2023-04-26
IPC分类号： G10L19/012 , G10L19/008 , G10L25/84
CPC分类号： G10L19/012 , G10L19/008 , G10L25/84 , G10L2025/786
摘要： A method for generating a comfort noise (CN) parameter is provided. The method includes receiving an audio input; detecting, with a Voice Activity Detector (VAD), a current inactive segment in the audio input; as a result of detecting, with the VAD, the current inactive segment in the audio input, calculating a CN parameter CNused; and providing the CN parameter CNused to a decoder. The CN parameter CNused is calculated based at least in part on the current inactive segment and a previous inactive segment.
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公开(公告)号：US20230131249A1
公开(公告)日：2023-04-27
申请号：US17980386
申请日：2022-11-03
发明人： Erik NORVELL , Fredrik JANSSON
IPC分类号： G10L19/012 , G10L19/008 , G10L19/032 , G10L19/04 , G10L19/06 , G10L19/00
摘要： A method for generation of comfort noise for at least two audio channels. The method comprises determining a spatial coherence between audio signals on the respective audio channels, wherein at least one spatial coherence value per frame and frequency band is determined to form a vector of spatial coherence values. A vector of predicted spatial coherence values is formed by a weighted combination of a first coherence prediction and a second coherence prediction that are combined using a weight factor α. The method comprises signaling information about the weight factor α to the receiving node, for enabling the generation of the comfort noise for the at least two audio channels at the receiving node.
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公开(公告)号：US20210158825A1
公开(公告)日：2021-05-27
申请号：US17044732
申请日：2019-04-05
发明人： Erik NORVELL , Fredrik JANSSON
IPC分类号： G10L19/00 , G10L19/012 , G10L19/008 , G10L19/04
摘要： A method, system, and computer program to encode and decode a channel coherence parameter applied on a frequency band basis, where the coherence parameters of each frequency band form a coherence vector. The coherence vector is encoded and decoded using a predictive scheme followed by a variable bit rate entropy coding.
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公开(公告)号：US20210090582A1
公开(公告)日：2021-03-25
申请号：US17044740
申请日：2019-04-05
发明人： Erik NORVELL , Fredrik JANSSON
IPC分类号： G10L19/012 , G10L19/008 , G10L19/04 , G10L19/032
摘要： A method for generation of comfort noise for at least two audio channels. The method comprises determining a spatial coherence between audio signals on the respective audio channels, wherein at least one spatial coherence value per frame and frequency band is determined to form a vector of spatial coherence values. A vector of predicted spatial coherence values is formed by a weighted combination of a first coherence prediction and a second coherence prediction that are combined using a weight factor a. The method comprises signaling information about the weight factor a to the receiving node, for enabling the generation of the comfort noise for the at least two audio channels at the receiving node.
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公开(公告)号：US20170019631A1
公开(公告)日：2017-01-19
申请号：US15118003
申请日：2014-02-14
发明人： Fredrik JANSSON , Erlendur KARLSSON
IPC分类号： H04N7/14 , H04L1/00 , H04L12/853
CPC分类号： H04N7/148 , H04L1/0002 , H04L47/2416
摘要： There is provided determination of a bit rate request (BRR) for a multimedia encoder of an electronic device. First bit rate information is received from a receiver of multimedia content. The multimedia content is generated by the multimedia encoder and transmitted by the electronic device on a transmission link of the electronic device to the receiver. The first bit rate information is related to the transmission link. Second bit rate information relating to a reception link of the electronic device is acquired. A set of properties of the transmission link and the reception link is determined. A combined BRR is determined for the multimedia encoder as a function of the first bit rate information and the second bit rate information, wherein the function depends on the set of properties. The combined BRR is provided to the multimedia encoder.
摘要翻译： 提供了用于电子设备的多媒体编码器的比特率请求（BRR）的确定。 从多媒体内容的接收者接收第一比特率信息。 多媒体内容由多媒体编码器生成并由电子设备在电子设备的传输链路上传送到接收机。 第一比特率信息与传输链路有关。 获取与电子设备的接收链路有关的第二比特率信息。 确定传输链路和接收链路的一组属性。 根据第一比特率信息和第二比特率信息，确定多媒体编码器的组合BRR，其中该功能取决于一组属性。 将组合的BRR提供给多媒体编码器。
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