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公开(公告)号：US11462224B2
公开(公告)日：2022-10-04
申请号：US17104852
申请日：2020-11-25
Applicant: Huawei Technologies Co., Ltd.
Inventor： Bin Wang , Zexin Liu , Haiting Li
Abstract: A stereo signal encoding method includes obtaining a residual signal encoding parameter of a current frame of a stereo signal based on downmixed signal energy and residual signal energy of each of M sub-bands of the current frame, where the residual signal encoding parameter indicates whether to encode residual signals of the M sub-bands, determining whether to encode the residual signals based on the residual signal encoding parameter, and encoding the residual signals when it is determined that the residual signals need to be encoded.
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公开(公告)号：US20220084531A1
公开(公告)日：2022-03-17
申请号：US17536932
申请日：2021-11-29
Applicant: Huawei Technologies Co., Ltd.
Inventor： Haiting Li , Zexin Liu , Xingtao Zhang , Lei Miao
IPC: G10L19/008 , H04S3/00
Abstract: A method for encoding an audio signal includes obtaining an ITD value of a current frame of an audio signal; obtaining a characteristic parameter of the current frame, wherein the characteristic parameter comprises at least one of a signal-to-noise ratio of the current frame or a peak feature of cross correlation coefficients of the current frame; determining, based on the characteristic parameter, whether to use the initial ITD value as the finalized ITD value of the current frame; and encoding the current frame based on the finalized ITD value of the current frame, wherein if the initial ITD value is determined as not used as the finalized ITD value of the current frame, the finalized ITD value of the current frame is the same as a finalized ITD value of a previous frame of the current frame.
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公开(公告)号：US11133014B2
公开(公告)日：2021-09-28
申请号：US16272397
申请日：2019-02-11
Applicant: Huawei Technologies Co., Ltd.
Inventor： Zexin Liu , Xingtao Zhang , Haiting Li , Lei Miao
IPC: G10L19/008 , G10L19/022 , G10L19/032 , G10L25/03 , H04S3/00
Abstract: A multi-channel signal encoding method and an encoder, where the encoding method includes obtaining a multi-channel signal of a current frame, determining an initial multi-channel parameter of the current frame, determining a difference parameter based on the initial multi-channel parameter of the current frame and multi-channel parameters of previous K frames of the current frame, where the difference parameter represents a difference between the initial multi-channel parameter of the current frame and the multi-channel parameters of the previous K frames, and K is an integer greater than or equal to one, determining a multi-channel parameter of the current frame based on the difference parameter and a characteristic parameter of the current frame, and encoding the multi-channel signal based on the multi-channel parameter of the current frame. Hence, the method and the encoder ensure better accuracy of inter-channel information of a multi-channel signal.
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44.发明申请公开(公告)号：US20210125620A1
公开(公告)日：2021-04-29
申请号：US17135539
申请日：2020-12-28
Applicant: Huawei Technologies Co., Ltd.
Inventor： Eyal Shlomot , Jonathan Alastair Gibbs , Haiting Li
IPC: G10L19/008 , G10L19/038 , G10L19/06
Abstract: A stereo signal encoding method includes performing spectrum broadening on a quantized line spectral frequency (LSF) parameter of a primary channel signal in a current frame in a stereo signal to obtain a spectrum-broadened LSF parameter of the primary channel signal, determining a prediction residual of an LSF parameter of a secondary channel signal in the current frame based on an original LSF parameter of the secondary channel signal and the spectrum-broadened LSF parameter of the primary channel signal, and performing a quantization on the prediction residual of the LSF parameter of the secondary channel signal.
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45.发明申请公开(公告)号：US20210118455A1
公开(公告)日：2021-04-22
申请号：US17135548
申请日：2020-12-28
Applicant: Huawei Technologies Co., Ltd.
Inventor： Eyal Shlomot , Jonathan Alastair Gibbs , Haiting Li
IPC: G10L19/008 , G10L19/038 , G10L19/06
Abstract: An encoding method includes determining a target adaptive broadening factor based on a quantized line spectral frequency (LSF) parameter of a primary channel signal in a current frame and an LSF parameter of a secondary channel signal in the current frame, and writing the quantized LSF parameter of the primary channel signal in the current frame and the target adaptive broadening factor into a bitstream.
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Patent Agency Ranking
公开(公告)号：US20200294513A1
公开(公告)日：2020-09-17
申请号：US16887878
申请日：2020-05-29
Applicant: Huawei Technologies Co., Ltd.
Inventor： Haiting Li , Bin Wang , Lei Miao
IPC: G10L19/008 , H04S1/00
Abstract: An audio encoding and decoding method includes obtaining a channel combination scheme for a current frame, obtaining an encoding mode of the current frame based on a downmix mode of a previous frame and the channel combination scheme for the current frame, performing time-domain downmix processing on left and right channel signals of the current frame based on the encoding mode of the current frame to obtain primary and secondary channel signals of the current frame, and encoding the primary and secondary channel signals of the current frame.
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公开(公告)号：US10714102B2
公开(公告)日：2020-07-14
申请号：US16458697
申请日：2019-07-01
Applicant: Huawei Technologies Co., Ltd.
Inventor： Bin Wang , Haiting Li , Lei Miao
IPC: G10L19/008 , G10L19/032
Abstract: In a stereo encoding method and a stereo encoder, a channel combination encoding solution of a current frame is first determined, and then a quantized channel combination ratio factor of the current frame and an encoding index of the quantized channel combination ratio factor are obtained based on the determined channel combination encoding solution, so that an obtained primary channel signal and secondary channel signal of the current frame meet a characteristic of the current frame.
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公开(公告)号：US09996503B2
公开(公告)日：2018-06-12
申请号：US15696091
申请日：2017-09-05
Applicant: Huawei Technologies Co., Ltd.
Inventor： Deming Zhang , Haiting Li , Anisse Taleb , Jianfeng Xu
IPC: G06F17/14 , G10L19/022 , G10L19/02
CPC classification number: G06F17/142 , G06F17/141 , G06F17/147 , G10L19/0212 , G10L19/022
Abstract: A method for processing an audio signal, including: sound is converted to an analog audio input signal and converted into a digital audio signal; a windowed time domain signal is obtained and then a twiddled signal is obtained; the twiddled signal is pre-rotated and then an FFT is performed; an in-place fixed rotate compensation is performed on the FFT signal and then an post-rotated is performed; a quantized signal is obtained and then wrote into a bitstream for transmitting or storing.
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公开(公告)号：US09439019B2
公开(公告)日：2016-09-06
申请号：US14822476
申请日：2015-08-10
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jingdong Chen , Haiting Li , Deming Zhang
CPC classification number: H04S3/002 , H04R1/406 , H04R3/005 , H04R5/027 , H04R2201/401 , H04R2201/405 , H04R2203/12 , H04S3/02 , H04S7/302 , H04S2400/11 , H04S2400/15 , H04S2420/13 , H04W88/02
Abstract: A sound signal processing method and apparatus are provided that relate to the audio signal processing field. The method in the present invention includes acquiring, by a mobile terminal, sound signals from a three-dimensional sound field, where at least three microphones are disposed on the mobile terminal and one microphone is configured to receive a sound signal in at least one direction; acquiring, according to the acquired sound signals, a direction of a sound source relative to the mobile terminal; and obtaining spatial audio signals according to the direction of the sound source relative to the mobile terminal and the acquired sound signals, where the spatial audio signals are used for simulating the three-dimensional sound field. The present invention is applicable to a process of collecting and processing signals in a three-dimensional sound field surrounding a terminal.
Abstract translation: 提供了与音频信号处理领域相关的声音信号处理方法和装置。 本发明的方法包括：由移动终端获取来自三维声场的声音信号，其中在移动终端上设置有至少三个麦克风，并且一个麦克风被配置为在至少一个方向上接收声音信号 ; 根据获取的声音信号，获取声源相对于移动终端的方向; 并且根据相对于移动终端的声源的方向和获取的声音信号获得空间音频信号，其中空间音频信号用于模拟三维声场。 本发明适用于在终端周围的三维声场中采集和处理信号的处理。
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50.发明申请公开(公告)号：US20250037727A1
公开(公告)日：2025-01-30
申请号：US18917494
申请日：2024-10-16
Applicant: Huawei Technologies Co., Ltd.
Inventor： Eyal Shlomot , Jonathan Alastair Gibbs , Haiting Li
IPC: G10L19/008 , G10L19/032 , G10L19/038 , G10L19/06 , G10L19/07
Abstract: A stereo signal encoding method includes performing spectrum broadening on a quantized line spectral frequency (LSF) parameter of a primary channel signal in a current frame in a stereo signal to obtain a spectrum-broadened LSF parameter of the primary channel signal, determining a prediction residual of an LSF parameter of a secondary channel signal in the current frame based on an original LSF parameter of the secondary channel signal and the spectrum-broadened LSF parameter of the primary channel signal, and performing a quantization on the prediction residual of the LSF parameter of the secondary channel signal.
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