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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：US20240105188A1
公开(公告)日：2024-03-28
申请号：US18523738
申请日：2023-11-29
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Haiting LI , Zexin LIU , Bin WANG
IPC: G10L19/008 , G10L25/18 , G10L25/21 , H04S1/00
CPC classification number: G10L19/008 , G10L25/18 , G10L25/21 , H04S1/007 , H04S2420/03
Abstract: This application discloses a downmixed signal calculation method and apparatus. The method includes: when a current frame or a previous frame of the current frame of a stereo signal is not a switching frame and a residual signal in the current frame or the previous frame does not need to be encoded, obtaining a second downmixed signal in the current frame and a downmix compensation factor of the current frame, correcting the second downmixed signal in the current frame based on the downmix compensation factor of the current frame, to obtain the first downmixed signal in the current frame and determining the first downmixed signal in the current frame as a downmixed signal in the current frame in a preset frequency band.
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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：US20210082442A1
公开(公告)日：2021-03-18
申请号：US17104425
申请日：2020-11-25
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Haiting LI , Bin WANG , Zexin LIU
IPC: G10L19/008 , G10L19/02 , G10L19/08
Abstract: A method and an apparatus for calculating a downmixed signal and a residual signal are provided. According to the method, if a first target frame (a current frame or a previous frame of the current frame) is a switching frame, a to-be-encoded downmixed signal and a to-be-encoded residual signal of the subband corresponding to the preset frequency band in the current frame is calculated based on a switch fade-in/fade-out factor of a second target frame, an initial downmixed signal and an initial residual signal of the preset frequency band.
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Patent Agency Ranking
公开(公告)号：US20210082441A1
公开(公告)日：2021-03-18
申请号：US17102190
申请日：2020-11-23
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Haiting LI , Zexin LIU , Bin WANG
IPC: G10L19/008 , H04S1/00 , G10L25/21 , G10L25/18
Abstract: This application discloses a downmixed signal calculation method and apparatus. The method includes: when a current frame or a previous frame of the current frame of a stereo signal is not a switching frame and a residual signal in the current frame or the previous frame does not need to be encoded, obtaining a second downmixed signal in the current frame and a downmix compensation factor of the current frame, correcting the second downmixed signal in the current frame based on the downmix compensation factor of the current frame, to obtain the first downmixed signal in the current frame and determining the first downmixed signal in the current frame as a downmixed signal in the current frame in a preset frequency band.
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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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28.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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29.发明申请SIGNAL CLASSIFICATION METHOD AND DEVICE, AND ENCODING AND DECODING METHODS AND DEVICES 有权信号分类方法和装置，以及编码和解码方法和装置公开(公告)号：US20130117029A1
公开(公告)日：2013-05-09
申请号：US13728201
申请日：2012-12-27
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Zexin LIU , Lei MIAO , Anisse TALEB
IPC: G10L19/008
CPC classification number: G10L19/265 , G10L19/008 , G10L19/0204 , G10L19/20 , G10L21/0388
Abstract: Embodiments of the present invention provide a signal classification method and device, and encoding and decoding methods and devices. The encoding method includes: dividing a current frame into a low-frequency band signal and a high-frequency band signal; attenuating the high-frequency band signal or a to-be-encoded characteristic parameter of the high-frequency band signal according to an energy attenuation value of the low-frequency band signal, where the energy attenuation value indicates energy attenuation of the low-frequency band signal caused by encoding of the low-frequency band signal; and encoding the attenuated high-frequency band signal or the attenuated to-be-encoded characteristic parameter of the high-frequency band signal. The technical solutions according to the embodiments of the present invention can improve the effect of combining the low-frequency band signal and the high-frequency band signal at the decoder.
Abstract translation: 本发明的实施例提供信号分类方法和装置，以及编码和解码方法和装置。 该编码方法包括：将当前帧划分成低频带信号和高频带信号; 根据低频带信号的能量衰减值对高频带信号的高频带信号或待编码的特征参数进行衰减，其中能量衰减值表示低频带信号的能量衰减 由低频带信号的编码引起的频带信号; 对衰减的高频带信号或衰减的待编码的高频信号的特征参数进行编码。 根据本发明的实施例的技术方案可以改善在解码器处组合低频带信号和高频带信号的效果。
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