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公开(公告)号：US20140114670A1
公开(公告)日：2014-04-24
申请号：US14145632
申请日：2013-12-31
Applicant: Huawei Technologies Co., Ltd.
IPC: G10L19/008
CPC classification number: G10L19/265 , G10L19/008 , G10L19/0204 , G10L19/087 , G10L19/18 , G10L21/038 , G10L25/18
Abstract: Example embodiments described herein generally provide for adaptive audio signal coding of low-frequency and high-frequency audio signals. More specifically, audio signals are categorized into high-frequency audio signals and low-frequency audio signals. Then, based on a set coding and/or characteristics of the low-frequency audio signals, the low-frequency coding manner is selected. Similarly, but in addition to, a bandwidth extension mode to code the high-frequency audio signals is selected according to the low-frequency coding manner and/or characteristics of the audio signals.
Abstract translation: 本文描述的示例性实施例通常提供低频和高频音频信号的自适应音频信号编码。 更具体地，音频信号被分类为高频音频信号和低频音频信号。 然后，基于低频音频信号的集合编码和/或特性，选择低频编码方式。 类似地，除了根据低频编码方式和/或音频信号的特性来选择对高频音频信号进行编码的带宽扩展模式。
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公开(公告)号：US20240355342A1
公开(公告)日：2024-10-24
申请号：US18763087
申请日：2024-07-03
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Xingtao ZHANG , Haiting LI , Zexin LIU , Lei MIAO
IPC: G10L19/008 , G10L19/032 , H04S3/00
CPC classification number: G10L19/008 , G10L19/032 , H04S3/008 , H04S2400/03 , H04S2420/03
Abstract: The present disclosure discloses an inter-channel phase difference parameter encoding method, where a current frame is obtained; a signal type and a previous IPD parameter encoding scheme of a previous frame are obtained; a current IPD parameter encoding scheme is obtained at least based on the signal type of the previous frame and the previous IPD parameter encoding scheme; and an IPD parameter of the current frame is processed based on the current IPD parameter encoding scheme.
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公开(公告)号：US20240153511A1
公开(公告)日：2024-05-09
申请号：US18544935
申请日：2023-12-19
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Bin WANG , Haiting LI , Lei MIAO
IPC: G10L19/008 , G10L19/22
CPC classification number: G10L19/008 , G10L19/22
Abstract: An audio encoding and decoding method and a related apparatus are provided. The audio encoding method includes: determining a channel combination scheme for a current frame; when the channel combination scheme for the current frame is different from a channel combination scheme for a previous frame, performing segmented time-domain downmix processing on left and right channel signals in the current frame based on the channel combination scheme for the current frame and the channel combination scheme for the previous frame, to obtain a primary channel signal and a secondary channel signal in the current frame; and encoding the obtained primary channel signal and secondary channel signal in the current frame.
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公开(公告)号：US20220310101A1
公开(公告)日：2022-09-29
申请号：US17663913
申请日：2022-05-18
Applicant: Huawei Technologies Co., Ltd.
Inventor： Bin WANG , Haiting LI , Lei MIAO
IPC: G10L19/008 , G10L19/22
Abstract: An audio encoding and decoding method and a related apparatus are provided. The audio encoding method includes: determining a channel combination scheme for a current frame; when the channel combination scheme for the current frame is different from a channel combination scheme for a previous frame, performing segmented time-domain downmix processing on left and right channel signals in the current frame based on the channel combination scheme for the current frame and the channel combination scheme for the previous frame, to obtain a primary channel signal and a secondary channel signal in the current frame; and encoding the obtained primary channel signal and secondary channel signal in the current frame.
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公开(公告)号：US20210375292A1
公开(公告)日：2021-12-02
申请号：US17400289
申请日：2021-08-12
Applicant: Huawei Technologies Co., Ltd.
Inventor： Bin WANG , Haiting LI , Lei MIAO
IPC: G10L19/008 , G10L19/22
Abstract: A non-transitory computer-readable medium is provided. The non-transitory computer-readable medium having computer instructions stored therein, which when executed by one or more processors, cause the one or more processors to perform operations. The operations comprise: determining a channel combination scheme for a current frame, where the determined channel combination scheme for the current frame is one of a plurality of channel combination schemes; and determining a coding mode of the current frame based on a channel combination scheme for a previous frame and the channel combination scheme for the current frame, where the coding mode of the current frame is one of a plurality of coding modes.
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Patent Agency Ranking
公开(公告)号：US20210264926A1
公开(公告)日：2021-08-26
申请号：US17319353
申请日：2021-05-13
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Xingtao ZHANG , Haiting LI , Zexin LIU , Lei MIAO
IPC: G10L19/008 , G10L19/032 , H04S3/00
Abstract: This application discloses an IPD parameter encoding method, including: obtaining a reference parameter used to determine an IPD parameter encoding scheme of a current frame of a multi-channel signal; determining the IPD parameter encoding scheme of the current frame based on the reference parameter, where the determined IPD parameter encoding scheme of the current frame is one of at least two preset IPD parameter encoding schemes; and processing an IPD parameter of the current frame based on the determined IPD parameter encoding scheme of the current frame. The technical solutions provided in this application can improve encoding quality of the multi-channel signal.
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公开(公告)号：US20190057706A1
公开(公告)日：2019-02-21
申请号：US16167281
申请日：2018-10-22
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
IPC: G10L19/02 , G10L19/002 , G10L19/032
CPC classification number: G10L19/0204 , G10L19/002 , G10L19/032
Abstract: Embodiments of the present disclosure provide signal encoding and decoding methods and devices. The method includes: determining, a quantity k of subbands to be encoded, where i is a positive number, and k is a positive integer; selecting, according to quantized envelopes of all subbands, k subbands from all the subbands, or selecting k subbands from all subbands according to a psychoacoustic model; and performing a first-time encoding operation on spectral coefficients of the k subbands. In some embodiments of the present disclosure, the quantity k of subbands to be encoded is determined according to the quantity of available bits and the first saturation threshold, and encoding is performed on the k subbands that are selected from all the subbands, instead of on an entire frequency band.
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公开(公告)号：US20160148622A1
公开(公告)日：2016-05-26
申请号：US15011824
申请日：2016-02-01
Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
IPC: G10L19/26 , G10L19/087 , G10L19/02
CPC classification number: G10L19/265 , G10L19/008 , G10L19/0204 , G10L19/087 , G10L19/18 , G10L21/038 , G10L25/18
Abstract: The present invention relates to an audio signal coding method and apparatus. The method includes: categorizing audio signals into high-frequency audio signals and low-frequency audio signals; coding the low-frequency audio signals by using a corresponding low-frequency coding manner according to characteristics of low-frequency audio signals; and selecting a bandwidth extension mode to code the high-frequency audio signals according to the low-frequency coding manner and/or characteristics of the audio signals.
Abstract translation: 本发明涉及音频信号编码方法和装置。 该方法包括：将音频信号分类为高频音频信号和低频音频信号; 根据低频音频信号的特性，通过使用相应的低频编码方式对低频音频信号进行编码; 以及根据低频编码方式和/或音频信号的特性来选择带宽扩展模式来对高频音频信号进行编码。
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19.发明申请公开(公告)号：US20160035364A1
公开(公告)日：2016-02-04
申请号：US14879388
申请日：2015-10-09
Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
Inventor： Zexin LIU , Lei MIAO , Anisse TALEB
IPC: G10L19/032 , G10L21/038 , G10L25/18 , G10L19/20
CPC classification number: G10L19/032 , G10L19/025 , G10L19/20 , G10L21/038 , G10L25/18 , H04N19/60
Abstract: A method and a device for encoding a high frequency signal, and a method and a device for decoding a high frequency signal are provided, which relate to encoding and decoding technology. The method for encoding a high frequency signal includes: determining a signal type of a high frequency signal of a current frame; smoothing and scaling time envelopes of the high frequency signal of the current frame and obtaining time envelopes of the high frequency signal of the current frame that require to be encoded, if the high frequency signal of the current frame is a non-transient signal and a high frequency signal of the previous frame is a transient signal; and quantizing and encoding the time envelopes of the high frequency signal of the current frame that require to be encoded, and frequency information and signal type information of the high frequency signal of the current frame.
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公开(公告)号：US20130275141A1
公开(公告)日：2013-10-17
申请号：US13914206
申请日：2013-06-10
Applicant: Huawei Technologies Co., Ltd
Inventor： Lei MIAO , Fengyan QI , Jianfeng XU , Dejun ZHANG , Qing ZHANG
IPC: G10L21/06
Abstract: The present disclosure relates to coding and decoding technologies, and discloses a preprocessing method, a preprocessing apparatus, and a coding device. The preprocessing method includes: obtaining characteristic information of a current frame signal; identifying whether the current frame signal requires no coding operation of removing LTC according to the characteristic information of the current frame signal and preset information; and if identifying that the current frame signal requires no coding operation of removing LTC, performing the coding operation of removing STC for the current frame signal; and if identifying that the current frame signal requires the coding operation of removing LTC, performing the coding operations of removing both LTC and STC for the current frame signal. Through the technical solution provided herein, the coding operation of removing LTC is performed for only part of the input frame signals.
Abstract translation: 本公开涉及编码和解码技术，并且公开了一种预处理方法，预处理装置和编码装置。 预处理方法包括：获得当前帧信号的特征信息; 识别当前帧信号是否不需要根据当前帧信号和预设信息的特征信息去除LTC的编码操作; 并且如果识别出当前帧信号不需要去除LTC的编码操作，则执行去除当前帧信号的STC的编码操作; 并且如果识别当前帧信号需要去除LTC的编码操作，则执行去除当前帧信号的LTC和STC的编码操作。 通过本文提供的技术方案，仅对部分输入帧信号执行去除LTC的编码操作。
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