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Xi'an Zhongxing New Software Co., Ltd.

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Suteng Innovation Technology Co., Ltd.

Hong-fu Jin Precision Industry (shenzhen) Co., Ltd.

Shenzhen Mindray Bio-medical Electronics Co., Ltd.

Hisense Visual Technology Co., Ltd.

Hongfujin Precision Electronics (zhengzhou) Co., Ltd.

Shenzhen Mindray Scientific Co., Ltd.

Honor Device Co., Ltd.

Sanechips Technology Co., Ltd.

Shenzhen Yinwang Intelligent Technologies Co., Ltd.

Bin Wang

Jun Wang

Zijiang Ma

Lei Miao

Wei Gou

Haiting Li

Zexin Liu

Xing Liu

Yan Li

Zhe Wang

Hui Xu

Ting Miao

Chen Lu

Yuan Gao

Kun Liu

Feng Bi

Tzu-Cheng Yu

Eyal Shlomot

Feng Li

Shuqiang Xia

Bo Sun

Liang Xia

Yunfei Qiao

Yu Wang

Li Zhang

Hejia Luo

Tao Li

Li He

Yong Sen Zheng

Shuai Liu

Ming Yuan

Wei Wu

Feng Wang

Yinggang Du

Bin Yu

Yong Yang

Bin Zhao

Qiang Wang

Rongdao Yu

Jianxun Ai

Fang Liu

Peng Zhang

Jiantong Zhou

Jun Chi Yan

Jian Hu

Xu Zhang

Jianjun Wu

Xiaolu Wang

Hui Yu

Li Zhou

Tao Xue

Shaoyong Wu

Zhi Wang

Ching-Chang Ni

Junhui Zhang

Lei Mao

Dong Zhou

Chun-Nan Ou

Longtao Ren

Weilian Jiang

Jiahao Xu

Yuanyuan Zhang

Jian Huang

Zhiqiang Liao

Nan Zhao

Lijun Chen

Eddy Liu

Xi Chen

Jian Cen

Yuehua Wei

Ting Ao

Sheng Fang

Xian Meng

Yong Jun Chen

Changqing Zhu

Yi Zhang

Yuqing Zhao

Zhiguo Zhang

Qian Yu

Ming Zhang

Wenlong Zhang

Bingyin Xia

Jonathan Alastair Gibbs

Shiqian Li

Lei Zeng

Xin Zhu

Qiyong Zhao

Qian Yin

Wanhong Meng

Junrong Xu

Xiaojiang Han

Yonghong Wang

Yi Fang

Xiaoqing Hu

Chenghui Peng

Ching-Tang Chin

Shizhu Huang

Audio encoding and decoding methods and apparatuses are disclosed, to reduce an amount of encoded and decoded data, so as to improve encoding and decoding efficiency. The method includes: selecting a first target virtual speaker from a preset virtual speaker set based on a first scene audio signal; generating a first virtual speaker signal based on the first scene audio signal and attribute information of the first target virtual speaker; obtaining a second scene audio signal using the attribute information of the first target virtual speaker and the first virtual speaker signal; generating a residual signal based on the first scene audio signal and the second scene audio signal; and encoding the first virtual speaker signal and the residual signal, to produce encoded signals, and writing the encoded signals into a bitstream.

Audio encoding and decoding method and apparatus

A method for determining an audio coding mode and a related apparatus are provided. The method may include: 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. The technical solutions provided in embodiments of this application help improve encoding quality.

Method for determining audio coding/decoding mode and related product

A three-dimensional audio signal coding method, apparatus, and encoder are described. The method includes, after obtaining a first correlation between a current frame of a three-dimensional audio signal and a representative virtual speaker set for a previous frame, the encoder determines whether the first correlation satisfies a reuse condition, where the first correlation is used to determine whether to reuse the representative virtual speaker set for the previous frame when the current frame is encoded. The method further encodes the current frame based on the representative virtual speaker set for the previous frame when the first correlation satisfies the reuse condition, to obtain a bitstream. A virtual speaker in the representative virtual speaker set for the previous frame is a virtual speaker used for encoding the previous frame of the three-dimensional audio signal.

Three-dimensional audio signal coding method and apparatus, and encoder

A multi-channel audio signal encoding method includes: obtaining a to-be-encoded first audio frame; obtaining a correlation value set, where the correlation value set includes respective correlation values of a plurality of channel pairs; selecting M correlation values from the correlation value set, where all the M correlation values are greater than correlation values other than the M correlation values in the correlation value set, and all the M correlation values are greater than or equal to a pairing threshold; obtaining M channel pair sets; determining a target channel pair set from the M channel pair sets, where a sum of correlation values of all channel pairs in the target channel pair set is the largest in those of the M channel pair sets; and encoding the first audio frame based on the target channel pair set.

Multi-channel audio signal encoding and decoding method and apparatus

Multi-channel audio signal encoding and decoding methods and apparatuses () are provided. This can reduce a quantity of bits of multi-channel side information, so that saved bits can be allocated to another functional module of an encoder, to improve quality of a reconstructed audio signal of a decoder side and improve coding quality.

An audio encoding and decoding method and related apparatus are provided. The audio encoding method may include determining a coding mode of a current frame. When determining that the coding mode of the current frame is an anticorrelated signal coding mode, the method further includes performing time-domain downmix processing on left and right channel signals in the current frame by using a time-domain downmix processing manner corresponding to the anticorrelated signal coding mode, to obtain a primary channel signal and a secondary channel signal, where the time-domain downmix processing manner corresponds to the anticorrelated signal coding mode is a time-domain downmix processing manner corresponding to an anticorrelated signal channel combination scheme, and the anticorrelated signal channel combination scheme is a channel combination scheme corresponding to a near out of phase signal. The method may also include encoding the obtained primary channel signal and secondary channel signal in the current frame.

Time-domain stereo encoding and decoding method and related product

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.

Stereo signal encoding method and apparatus using a residual signal encoding parameter

This disclosure provides a encoding method, and an encoder for a multi-channel signal. The encoding method includes: obtaining a first ITD of a current frame of a multi-channel signal includes an initial left channel signal and an initial right channel signal; obtaining a second ITD of the current frame based on the first ITD and a third ITD of a previous frame of the multi-channel signal; performing delay alignment on the initial left channel signal and the initial right channel signal based on the second ITD, to obtain an aligned left channel signal and an aligned right channel signal; and encoding the aligned left channel signal and the aligned right channel signal.

Encoding and decoding methods, and encoding and decoding apparatuses for stereo signal

This application provides a gateway device. The gateway device may include a base and a cable waterproof structure disposed on the base, the base includes at least one network interface, and the cable waterproof structure includes a cable plugged into the network interface and a cover that covers the network interface. The cable includes a cable body and a network interface plug fastened to an end portion of the cable body. A sealing member is disposed at a joint between the cable body and the network interface plug. A threading hole through which the cable is threaded is disposed in the cover, and the sealing member is attached to the threading hole through interference fit. Effective waterproof for the cable can be implemented through interference fit between the sealing member and the threading hole of the cover.

Waterproof gateway device

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.

Downmixed signal calculation method and apparatus

A signal processing method and device includes obtaining spectral coefficients of a current frame of an audio signal, in which N sub-bands of the current frame comprises at least one of the spectral coefficients. A total energy of M successive sub-bands of the N sub-bands, a total energy of K successive sub-bands of the N sub-bands, and an energy of a first sub-band are obtained to determine whether to modify original envelope values of the M sub-bands. When the original envelope values of the M sub-bands are modified, encoding bits are allocated to each of the N sub-bands according to the modified envelope values of the M sub-bands.

Signal processing method and device

An 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.

Encoding method, decoding method, encoding apparatus, and decoding apparatus

A time-domain stereo parameter encoding method and a related product are provided. The time-domain stereo parameter encoding method includes: determining a channel combination scheme for a current frame; determining a time-domain stereo parameter of the current frame based on the channel combination scheme for the current frame; and encoding the determined time-domain stereo parameter of the current frame, where the time-domain stereo parameter includes at least one of a channel combination ratio factor or an inter-channel time difference.

Time-domain stereo parameter encoding method and related product

A multi-channel audio signal coding method includes obtaining a to-be-encoded first audio frame, pairing at least five channel signals according to a first pairing manner to obtain a first channel pair set, obtaining a first sum of correlation values of the first channel pair set, where one channel pair has one correlation value, pairing the at least five channel signals according to a second pairing manner to obtain a second channel pair set, obtaining a second sum of correlation values of the second channel pair set, determining a target pairing manner of the at least five channel signals based on the first sum of correlation values and the second sum of correlation values, and encoding the at least five channel signals based on a channel pair set corresponding to the target pairing manner, where the target pairing manner is the first pairing manner or the second pairing manner.

Multi-channel audio signal coding method and apparatus

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.

Audio coding method and apparatus

Growing community of inventors

Shenzhen, China

Bin Wang