公开(公告)号：US10068578B2

公开(公告)日：2018-09-04

申请号：US14981956

申请日：2015-12-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Bin Wang ,  Lei Miao ,  Zexin Liu

IPC: G10L19/00 ,  G10L19/005 ,  G10L19/02 ,  G10L21/0232 ,  G10L25/93

Abstract: A method for recovering lost frame in a media bitstream is provided. When a frame loss event occurs, a decoder obtains a synthesized high frequency band signal of a current lost frame, and recovery information related to the current lost frame. The decoder determines a global gain gradient of the current lost frame, and further determines a global gain of the current lost frame according to the global gain gradient and a global gain of each frame in previous M frames of the current lost frame. A high frequency band signal of the current lost frame is obtained by adjusting the synthesized high frequency band signal of the current lost frame according to the global gain and a subframe gain of the current lost frame. The process enables natural and smooth transitions of the high frequency band signal between the frames, and attenuates noises in the high frequency band signal.

公开(公告)号：US20180019515A1

公开(公告)日：2018-01-18

申请号：US15706373

申请日：2017-09-15

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ming Zhang ,  Bin Wang

IPC: H01Q1/52 ,  H01Q9/42 ,  H01Q1/38 ,  H01Q21/28 ,  H01Q1/24

CPC classification number: H01Q1/521 ,  H01Q1/243 ,  H01Q1/38 ,  H01Q1/52 ,  H01Q9/42 ,  H01Q21/28

Abstract: A MIMO antenna is disclosed, including: a first antenna, a second antenna, and an adjustable decoupling structure. The adjustable decoupling structure is disposed between the first antenna and the second antenna, and is configured to reduce coupling between the first antenna and the second antenna. The adjustable decoupling structure includes a first adjustable capacitor and a second adjustable capacitor that are connected in series and a first adjustable inductor and a second adjustable inductor that are connected in parallel.

公开(公告)号：US20180018989A1

公开(公告)日：2018-01-18

申请号：US15717952

申请日：2017-09-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zexin Liu ,  Bin Wang ,  Lei Miao

IPC: G10L21/0388 ,  G10L19/26 ,  G10L19/08

CPC classification number: G10L21/0388 ,  G10L19/0204 ,  G10L19/08 ,  G10L19/24 ,  G10L19/265 ,  G10L21/038 ,  G10L25/93

Abstract: An audio signal encoding and decoding method, an audio signal encoding and decoding apparatus, a transmitter, a receiver, and a communications system, which can improve encoding and/or decoding performance. The audio signal encoding method includes dividing a to-be-encoded time domain signal into a low band signal and a high band signal; encoding the low band signal to obtain a low frequency encoding parameter; calculating a voiced degree factor, and predicting a high band excitation signal; weighting the high band excitation signal and random noise using the voiced degree factor, so as to obtain a synthesized excitation signal; and obtaining a high frequency encoding parameter based on the synthesized excitation signal and the high band signal. Technical solutions in the embodiments of the present invention can improve an encoding or decoding effect.

公开(公告)号：US20170316784A1

公开(公告)日：2017-11-02

申请号：US15650714

申请日：2017-07-14

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Zexin Liu ,  Bin Wang ,  Lei Miao

IPC: G10L19/002 ,  G10L19/035 ,  G10L19/02

CPC classification number: G10L19/002 ,  G10L19/0204 ,  G10L19/035

Abstract: Present disclosure provide an audio signal encoding method and encoder, which relate to the communications field and can perform proper bit allocation for spectral coefficients of an audio signal. The method includes: splitting spectral coefficients of a current frame into subbands, acquiring quantized energy envelopes of the subbands;adjusting quantized energy envelopes values of some subbands; perform bit allocation according to adjusted quantized energy envelopes of the some subbands; quantizing a spectral coefficient of a subband to which at least one bit is allocated after the bit allocation.

公开(公告)号：US09754594B2

公开(公告)日：2017-09-05

申请号：US15170524

申请日：2016-06-01

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zexin Liu ,  Bin Wang ,  Lei Miao

IPC: G10L19/00 ,  G10L19/002 ,  G10L19/02 ,  G10L19/035

CPC classification number: G10L19/002 ,  G10L19/0204 ,  G10L19/035

Abstract: Present disclosure provide an encoding method and apparatus, which relate to the communications field and can perform proper quantization bit allocation for spectral coefficients of an audio signal, thereby improving quality of a signal obtained by a decoder by means of decoding. The method includes: after splitting spectral coefficients of a current data frame into subbands, acquiring quantized frequency envelope values of the subbands; modifying quantized frequency envelope values of subbands of a first quantity in the subbands; allocating quantization bits to the subbands according to modified quantized frequency envelope values of the subbands of the first quantity; quantizing a spectral coefficient of a subband to which a quantization bit is allocated in the subbands; and writing the quantized spectral coefficient of the subband to which a quantization bit is allocated into a bitstream.

公开(公告)号：US20170238410A1

公开(公告)日：2017-08-17

申请号：US15518970

申请日：2014-10-17

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiaoqing Li ,  Jinjing Jiang ,  Zhiguo Zhang ,  Bin Wang

IPC: H05K1/02 ,  H05K9/00 ,  C09J9/02 ,  H01L23/367

CPC classification number: H05K1/0203 ,  C09J9/02 ,  C09J2201/128 ,  C09J2201/602 ,  C09J2203/326 ,  H01L23/36 ,  H01L23/3675 ,  H01L23/42 ,  H01L23/552 ,  H01L2924/0002 ,  H05K1/0209 ,  H05K1/0212 ,  H05K9/0009 ,  H05K9/0032 ,  H05K2201/066 ,  H05K2201/0715 ,  H05K2201/10371 ,  H01L2924/00

Abstract: A heat-dissipation and shielding structure, including a shielding case, a thermal pad, and a heat sink. The bottom of the shielding case is connected to a circuit board used to carry a heat emitting element, the heat sink is disposed on the top of the shielding case, the top of the shielding case is provided with an opening, the thermal pad runs through the opening, a bottom surface of the thermal pad is attached to the heat emitting element, and a top surface of the thermal pad is attached to the heat sink; and the heat-dissipation and shielding structure further includes a metal spring plate, where the metal spring plate is located on a periphery of the opening and encircles the opening, and the metal spring plate is elastically connected between the shielding case and the heat sink.

公开(公告)号：US20170213564A1

公开(公告)日：2017-07-27

申请号：US15481306

申请日：2017-04-06

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Zexin Liu ,  Lei Miao ,  Bin Wang

IPC: G10L19/087 ,  G10L21/038 ,  G10L25/90 ,  G10L19/12

CPC classification number: G10L19/087 ,  G10L19/12 ,  G10L21/038 ,  G10L25/90 ,  G10L2019/0002 ,  G10L2025/906

Abstract: The present invention provide a bandwidth extension method and apparatus. The method includes: acquiring a bandwidth extension parameter, where the bandwidth extension parameter includes one or more of the following parameters: a linear predictive coefficient (LPC), a line spectral frequency (LSF) parameter, a pitch period, a decoding rate, an adaptive codebook contribution, and an algebraic codebook contribution; and performing, according to the bandwidth extension parameter, bandwidth extension on a decoded low frequency band signal, to obtain a high frequency band signal. The high frequency band signal recovered by using the bandwidth extension method and apparatus in the embodiments of the present invention is close to an original high frequency band signal, and the quality is satisfactory.

公开(公告)号：US09666201B2

公开(公告)日：2017-05-30

申请号：US15068908

申请日：2016-03-14

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zexin Liu ,  Lei Miao ,  Bin Wang

IPC: G10L21/038 ,  G10L19/07 ,  G10L19/12 ,  G10L19/087 ,  G10L19/00

CPC classification number: G10L19/087 ,  G10L19/12 ,  G10L21/038 ,  G10L25/90 ,  G10L2019/0002 ,  G10L2025/906

Abstract: The present invention provides a bandwidth extension method and apparatus. The method includes: acquiring a bandwidth extension parameter, where the bandwidth extension parameter includes one or more of the following parameters: a linear predictive coefficient (LPC), a line spectral frequency (LSF) parameter, a pitch period, a decoding rate, an adaptive codebook contribution, and an algebraic codebook contribution; and performing, according to the bandwidth extension parameter, bandwidth extension on a decoded low-frequency signal, to obtain a high frequency band signal. The high frequency band signal recovered by using the bandwidth extension method and apparatus in the embodiments of the present invention is close to an original high frequency band signal, and the quality is satisfactory.

公开(公告)号：US20170076732A1

公开(公告)日：2017-03-16

申请号：US15362443

申请日：2016-11-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zexin Liu ,  Bin Wang ,  Lei Miao

IPC: G10L19/12 ,  G10L19/025

CPC classification number: G10L19/12 ,  G10L19/025 ,  G10L19/06

Abstract: An audio coding method and apparatus, where the method includes, for each audio frame in audio, when a signal characteristic of the audio frame and a signal characteristic of a previous audio frame meet a preset modification condition, determining a first modification weight according to linear spectral frequency (LSF) differences of the audio frame and LSF differences of the previous audio frame, modifying a linear predictive parameter of the audio frame according to the determined first modification weight, and coding the audio frame according to a modified linear predictive parameter of the audio frame. According to the present disclosure, audio having a wider bandwidth can be coded while a bit rate remains unchanged or a bit rate slightly changes and a spectrum between audio frames is steadier.

Abstract translation: 一种音频编码方法和装置，对于音频中的每个音频帧，当音频帧的信号特征和先前的音频帧的信号特性满足预设的修改条件时，该方法包括：根据线性确定第一修改权重 根据所确定的第一修改权重修改音频帧的线性预测参数，并根据所修改的线性预测参数对音频帧进行编码，对音频帧的频谱频率（LSF）差异和先前音频帧的LSF差异进行编码， 音频帧。 根据本公开，可以在比特率保持不变或比特率稍微改变并且音频帧之间的频谱更稳定的同时对具有较宽带宽的音频进行编码。

公开(公告)号：US20170047074A1

公开(公告)日：2017-02-16

申请号：US15335449

申请日：2016-10-27

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Bin Wang ,  Lei Miao ,  Zexin Liu

IPC: G10L19/02 ,  G10L19/002

CPC classification number: G10L19/0204 ,  G10L19/002 ,  G10L19/02

Abstract: Present disclosure provides a signal processing method and device. Spectral coefficients of a current frame of a frequency-domain audio signal are divided into N sub-bands. N is a positive integer greater than 1. According to an energy attribute and a spectral attribute of a first subset of the N sub-bands, whether to modify original envelope values of sub-bands in the first subset is determined. A frequency range of each of the M sub-bands in the first subset is lower than a frequency range of each of the K sub-bands. Based on a determination that the original envelope values of the M sub-bands need to be modified, the original envelope values of the M sub-bands are modified individually to obtain modified envelope values of the M sub-bands. Encoding bits are allocated to each of the N sub-bands according to the modified envelope values of the M sub-bands and original envelope values of the K sub-bands.

Abstract translation: 本公开提供了一种信号处理方法和装置。 频域音频信号的当前帧的频谱系数被划分为N个子带。 N是大于1的正整数。根据能量属性和N个子带的第一子集的频谱属性，确定是否修改第一子集中的子带的原始包络值。 第一子集中的每个M个子带的频率范围低于每个K个子带的频率范围。 基于需要修改M个子带的原始包络值的确定，M个子带的原始包络值被单独修改以获得M个子带的修改的包络值。 根据M个子带的修改的包络值和K个子带的原始包络值，将编码比特分配给N个子带中的每一个。