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公开(公告)号：US20230179941A1
公开(公告)日：2023-06-08
申请号：US18161527
申请日：2023-01-30
Applicant: Huawei Technologies Co., Ltd.
Inventor： Bin Wang , Gavin Kearney , Cal Armstrong , Jiance Ding , Zhe Wang
IPC: H04S7/00 , G10L19/008
CPC classification number: H04S7/303 , G10L19/008 , H04S7/305 , H04S2420/01
Abstract: An audio signal rendering method includes obtaining a to-be-rendered audio signal by decoding a received bitstream, obtaining control information, where the control information indicates at least one of content description metadata, rendering format flag information, loudspeaker configuration information, application scene information, tracking information, posture information, or location information, and rendering the to-be-rendered audio signal based on the control information to obtain a rendered audio signal.
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公开(公告)号：US20230154483A1
公开(公告)日：2023-05-18
申请号：US18154549
申请日：2023-01-13
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jiance Ding , Zhe Wang , Bin Wang , Bingyin Xia
IPC: G10L21/0232 , G10L25/84 , G10L25/87 , H04S7/00
CPC classification number: G10L21/0232 , G10L25/84 , G10L25/87 , H04S7/307
Abstract: A stereo audio signal delay estimation method includes obtaining a current frame of a stereo audio signal. The current frame includes a first channel audio signal and a second channel audio signal. Estimating an inter-channel time (ITD) of the current frame using a first algorithm when a signal type of a noise signal included in the current frame is a coherent noise signal type, or estimating the ITD using a second algorithm when the signal type of the noise signal is a diffuse noise signal type. The first algorithm includes weighting a frequency domain cross power spectrum based on a first weighting function that includes a first construction factor. The second algorithm includes weighting the frequency domain cross power spectrum based on a second weighting function that includes a second construction factor different from the first construction factor.
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公开(公告)号：US11445324B2
公开(公告)日：2022-09-13
申请号：US17240655
申请日：2021-04-26
Applicant: Huawei Technologies Co., Ltd.
Inventor： Bin Wang , Zexin Liu , Risheng Xia
Abstract: This application provides an audio rendering method, including: obtaining a to-be-rendered BRIR signal, where an elevation angle corresponding to the to-be-rendered BRIR signal is 0 degrees; obtaining a direct sound signal based on the to-be-rendered BRIR signal; correcting, based on a target elevation angle, a frequency-domain signal corresponding to the direct sound signal, to obtain a frequency-domain signal corresponding to the target elevation angle; obtaining a time-domain signal based on the frequency-domain signal of the target elevation angle; and superposing the time-domain signal on a signal that is in the to-be-rendered BRIR signal and that is in a second time period after a first time period, to obtain a BRIR signal of the target elevation angle.
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公开(公告)号：US11430456B2
公开(公告)日：2022-08-30
申请号：US16999448
申请日：2020-08-21
Applicant: Huawei Technologies Co., Ltd.
Abstract: An encoding method, a decoding method, an encoding apparatus, a decoding apparatus, a transmitter, a receiver, and a communications system, where the encoding method includes dividing a to-be-encoded time-domain signal into a low band signal and a high band signal, performing encoding on the low band signal to obtain a low frequency encoding parameter, performing encoding on the high band signal to obtain a high frequency encoding parameter, obtaining a synthesized high band signal; performing short-time post-filtering processing on the synthesized high band signal to obtain a short-time filtering signal, and calculating a high frequency gain based on the high band signal and the short-time filtering signal.
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公开(公告)号：US20210390968A1
公开(公告)日：2021-12-16
申请号：US17458879
申请日：2021-08-27
Applicant: Huawei Technologies Co., Ltd.
IPC: G10L19/12 , G10L19/06 , G10L19/025
Abstract: A method comprises determining a first modification weight according to linear spectral frequency (LSF) differences of the current frame and LSF differences of a previous frame of the current frame when a signal characteristic of the current frame meets a preset modification condition, modifying the linear predictive parameter of the current frame according to the determined first modification weight, and coding the current frame according to the modified linear predictive parameter.
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Patent Agency Ranking
公开(公告)号：US20210329399A1
公开(公告)日：2021-10-21
申请号：US17359871
申请日：2021-06-28
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Bin Wang , Jonathan Alastair Gibbs
IPC: H04S7/00
Abstract: In an audio signal processing method, a processing device obtains a current position relationship between a sound source and a listener. The processing device then obtains a current audio rendering function based on the current position relationship. When the current position relationship is different from a stored previous position relationship, the processing device adjusts an initial gain of the current audio rendering function based on the current position relationship and the previous position relationship, to obtain an adjusted gain of the current audio rendering function. The processing device then obtains an adjusted audio rendering function based on the current audio rendering function and the adjusted gain, and generates a current output signal based on a current input signal and the adjusted audio rendering function.
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公开(公告)号：US20200381000A1
公开(公告)日：2020-12-03
申请号：US16999448
申请日：2020-08-21
Applicant: Huawei Technologies Co., Ltd.
IPC: G10L19/03 , G10L19/26 , G10L21/038 , G10L19/12
Abstract: An encoding method, a decoding method, an encoding apparatus, a decoding apparatus, a transmitter, a receiver, and a communications system, where the encoding method includes dividing a to-be-encoded time-domain signal into a low band signal and a high band signal, performing encoding on the low band signal to obtain a low frequency encoding parameter, performing encoding on the high band signal to obtain a high frequency encoding parameter, obtaining a synthesized high band signal; performing short-time post-filtering processing on the synthesized high band signal to obtain a short-time filtering signal, and calculating a high frequency gain based on the high band signal and the short-time filtering signal.
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公开(公告)号：US20200027468A1
公开(公告)日：2020-01-23
申请号：US16588064
申请日：2019-09-30
Applicant: Huawei Technologies Co., Ltd.
IPC: G10L19/12 , G10L19/06 , G10L19/025
Abstract: A method comprises determining a first modification weight according to linear spectral frequency (LSF) differences of the current frame and LSF differences of a previous frame of the current frame, when a signal characteristic of the current frame meets a preset modification condition, modifying the linear predictive parameter of the current frame according to the determined first modification weight, and coding the current frame according to the modified linear predictive parameter.
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159.发明申请公开(公告)号：US20190355378A1
公开(公告)日：2019-11-21
申请号：US16531116
申请日：2019-08-04
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
IPC: G10L21/0388 , G10L19/26 , G10L19/08 , G10L21/038
Abstract: This application provides an audio signal encoding and decoding method. An audio signal encoder encodes a low frequency band signal of a received audio signal, to obtain one or more low frequency encoding parameters. A voiced factor is determined according to the one or more low frequency encoding parameters. The encoder obtains a high frequency band excitation signal according to the one or more low frequency encoding parameters and the voiced factor. The encoder further obtains a synthesized excitation signal according to the high frequency band excitation signal and the voiced factor, and a high frequency encoding parameter according to the synthesized excitation signal and a high frequency band signal of the received audio signal. The encoder outputs a bitstream that includes the high frequency encoding parameter and the one or more low frequency encoding parameters. An audio signal decoder obtains the audio signal from the bitstream through reversed steps.
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公开(公告)号：US20190333528A1
公开(公告)日：2019-10-31
申请号：US16419777
申请日：2019-05-22
Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
Abstract: Embodiments of the present application provide a coding/decoding method, apparatus, and system. According to the coding method, de-emphasis processing is performed on a full band signal by using a de-emphasis parameter determined according to a characteristic factor of an input audio signal, and then the full band signal is coded and sent to a decoder, so that the decoder performs corresponding de-emphasis decoding processing on the full band signal according to the characteristic factor of the input audio signal and restores the input audio signal. This resolves a prior-art problem that an audio signal restored by a decoder is apt to have signal distortion, and implements adaptive de-emphasis processing on the full band signal according to the characteristic factor of the audio signal to enhance coding performance, so that the input audio signal restored by the decoder has relatively high fidelity and is closer to an original signal.
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