公开(公告)号：US20230040515A1

公开(公告)日：2023-02-09

申请号：US17969454

申请日：2022-10-19

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Bingyin Xia ,  Jiawei Li ,  Zhe Wang

IPC: G10L19/02 ,  G10L19/22

Abstract: An audio signal coding method is provided that includes: obtaining a current frame of an audio signal; obtaining a coding parameter based on a power spectrum ratio of a current frequency in a current frequency area of at least a part of signals of the current frame, where the coding parameter indicates tonal component information of the at least a part of signals, the tonal component information includes at least one of location information of a tonal component, quantity information of tonal components, amplitude information of the tonal component, or energy information of the tonal component, and the power spectrum ratio of the current frequency is a ratio of a value of a power spectrum of the current frequency to a mean value of power spectrums of the current frequency area; and performing bitstream multiplexing on the coding parameter to obtain a coded bitstream.

公开(公告)号：US20240169998A1

公开(公告)日：2024-05-23

申请号：US18423990

申请日：2024-01-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xianbo Meng ,  Bingyin Xia ,  Zhe Wang

IPC: G10L19/008 ,  G10L19/022

CPC classification number: G10L19/008 ,  G10L19/022

Abstract: In a multi-channel signal encoding method, a current frame includes a first sound channel and a second sound channel. First group information of M blocks of the first sound channel and second group information of M blocks of the second sound channel are obtained. When the first group information and the second group information meet a preset condition, first adjusted group information and second adjusted group information are obtained based on the first group information and the second group information. Then, a first to-be-encoded spectrum is obtained based on the first adjusted group information and the spectrums of the M blocks of the first sound channel. Similarly, a second to-be-encoded spectrum may be obtained. Finally, the first to-be-encoded spectrum and the second to-be-encoded spectrum are encoded by using an encoding neural network to obtain a spectrum encoding result. The spectrum encoding result may be carried by a bitstream.

公开(公告)号：US20240079016A1

公开(公告)日：2024-03-07

申请号：US18504102

申请日：2023-11-07

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Shuai Liu ,  Yuan Gao ,  Bin Wang ,  Bingyin Xia ,  Zhe Wang

IPC: G10L19/008 ,  G10L25/03

CPC classification number: G10L19/008 ,  G10L25/03

Abstract: An audio encoding method and apparatus and an audio decoding method and apparatus are disclosed. During encoding of an audio channel signal of a current frame, whether a first target virtual loudspeaker and a second target virtual loudspeaker corresponding to an audio channel signal of a previous frame of the current frame meet a specified condition is first determined. When the first target virtual loudspeaker and the second target virtual loudspeaker meet the specified condition, a first encoding parameter of the audio channel signal of the current frame is determined based on a second encoding parameter of the audio channel signal of the previous frame, so that the audio channel signal of the current frame is encoded based on the first encoding parameter to obtain an encoding result, and the encoding result is written into a bitstream.

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.

公开(公告)号：US20230154473A1

公开(公告)日：2023-05-18

申请号：US18154197

申请日：2023-01-13

Applicant: Huawei Technologies Co., Ltd.

Inventor： Bingyin Xia ,  Jiawei Li ,  Zhe Wang

IPC: G10L19/02 ,  G10L25/21

CPC classification number: G10L19/0204 ,  G10L25/21 ,  G10L19/008

Abstract: An audio decoding method includes: obtaining an encoded bitstream; performing bitstream demultiplexing on the encoded bitstream to obtain a first coding parameter of a current frame; performing bitstream demultiplexing on the encoded bitstream based on a configuration parameter for tonal component coding to obtain a second coding parameter of the current frame, where the second coding parameter of the current frame includes a tonal component parameter; obtaining a first high frequency band signal and a first low frequency band signal of the current frame based on the first coding parameter; obtaining a second high frequency band signal of the current frame based on the second coding parameter and the configuration parameter for tonal component coding; and obtaining a decoded signal of the current frame based on the first high frequency band signal, the second high frequency band signal, and the first low frequency band signal.

公开(公告)号：US20230048893A1

公开(公告)日：2023-02-16

申请号：US17965979

申请日：2022-10-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： Bingyin Xia ,  Jiawei Li ,  Zhe Wang

IPC: G10L19/02 ,  G10L19/22 ,  G10L19/16 ,  G10L19/008

Abstract: An audio signal encoding method includes obtaining a current frame of an audio signal, where the current frame includes a high frequency band signal and a low frequency band signal; obtaining a parameter of bandwidth extension of the current frame based on the high frequency band signal, the low frequency band signal, and configuration information of the bandwidth extension; obtaining tile information, where the tile information indicates a first frequency range in which tonal component detection needs to be performed on the high frequency band signal; performing tonal component detection in the first frequency range to obtain information about a tonal component of the high frequency band signal; and performing bitstream multiplexing on the parameter of the bandwidth extension and the information of the tonal component to obtain a payload bitstream.