公开(公告)号：US20160086613A1

公开(公告)日：2016-03-24

申请号：US14952902

申请日：2015-11-25

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zexin Liu ,  Lei Miao

IPC: G10L19/02 ,  G10L19/08 ,  G10L19/06 ,  G10L19/002

CPC classification number: G10L19/0204 ,  G10L19/002 ,  G10L19/06 ,  G10L19/08 ,  G10L19/107 ,  G10L19/24 ,  G10L21/038

Abstract: Embodiments of the present invention provide a signal decoding method and device. The method includes decoding a bit stream of a voice signal or an audio signal to acquire a decoded signal; predicting an excitation signal of an extension band according to the decoded signal, where the extension band is adjacent to a band of the decoded signal, and the band of the decoded signal is lower than the extension band; selecting a first band and a second band from the decoded signal, and predicting a spectral envelope of the extension band according to a spectral coefficient of the first band and a spectral coefficient of the second band; and determining a frequency-domain signal of the extension band according to the spectral envelope of the extension band and the excitation signal of the extension band.

Abstract translation: 本发明的实施例提供一种信号解码方法和装置。 该方法包括解码语音信号或音频信号的比特流以获得解码信号; 根据解码信号预测扩展频带的激励信号，其中扩展频带与解码信号的频带相邻，并且解码信号的频带低于扩展频带; 从解码信号中选择第一频带和第二频带，并根据第一频带的频谱系数和第二频带的频谱系数预测扩展频带的频谱包络; 以及根据扩展频带的频谱包络和扩展频带的激励信号来确定扩展频带的频域信号。

公开(公告)号：US09293145B2

公开(公告)日：2016-03-22

申请号：US13850655

申请日：2013-03-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： David Virette ,  Yue Lang ,  Lei Miao ,  Wenhai Wu

IPC: G10L19/00 ,  G10L19/008 ,  G10L21/0364 ,  G10L19/025

CPC classification number: G10L19/008 ,  G10L19/025 ,  G10L21/0364

Abstract: According to the invention, a device (101, 101′) for postprocessing at least one channel signal of a plurality of channel signals of a multi-channel signal is described, the at least one channel signal being generated from a decoded downmix signal by a low-bit-rate audio coding/decoding system, the device comprising: a receiver (103; 103′) for receiving the at least one channel signal generated from the decoded downmix signal, a time envelope of the decoded downmix signal and a classification indication indicating a transient type of the at least one channel signal, wherein the classification indication is associated to the at least one channel signal, and a postprocessor (105; 105′) for postprocessing the at least one channel signal based on the time envelope of the decoded downmix signal weighted by a respective weighting factor and in dependence on the classification indication.

Abstract translation: 根据本发明，描述了用于后处理多信道信号的多个信道信号的至少一个信道信号的装置（101,101'），所述至少一个信道信号是通过解码的下混合信号由 低比特率音频编码/解码系统，该装置包括：接收机（103; 103'），用于接收从解码缩混信号产生的至少一个信道信号，解码缩混信号的时间包络和分类指示 指示所述至少一个信道信号的瞬时类型，其中所述分类指示与所述至少一个信道信号相关联;以及后处理器（105; 105'），用于基于所述至少一个信道信号的时间包络对所述至少一个信道信号进行后处理 解码的下混合信号由相应的加权因子加权并且依赖于分类指示。

公开(公告)号：US20160055856A1

公开(公告)日：2016-02-25

申请号：US14931975

申请日：2015-11-04

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xingtao Zhang ,  Lei Miao

IPC: G10L19/008 ,  H04S3/00

CPC classification number: G10L19/008 ,  G10L19/005 ,  H04S3/008 ,  H04S2400/01 ,  H04S2420/03

Abstract: An inter-channel level difference (ICLD) processing method and apparatus are disclosed. A stereo audio signal is received, and the stereo audio signal is parsed frame by frame, to obtain an ICLD of each sub-band of each subframe of each frame of the stereo audio signal; a sum of absolute values of the ICLDs of each subframe of any frame of the stereo audio signal is calculated; and when an absolute value of a difference between the sums of the absolute values of the ICLDs of each two subframes of the any frame is less than a preset threshold, a weighted ICLD value of each sub-band of the any frame is calculated in a first weighting manner; or otherwise, a weighted ICLD value of each sub-band of the any frame is calculated in a second weighting manner.

Abstract translation: 公开了信道间差分（ICLD）处理方法和装置。 接收立体声音频信号，并逐帧解析立体声音频信号，以获得立体声音频信号的每帧的每个子帧的每个子带的ICLD; 计算立体声音频信号的任何帧的每个子帧的ICLD的绝对值之和; 并且当任何帧的每两个子帧的ICLD的绝对值的和之间的差的绝对值小于预设阈值时，任何帧的每个子带的加权ICLD值被计算为 第一加权方式; 否则，以第二加权方式计算任何帧的每个子带的加权ICLD值。

公开(公告)号：US09251798B2

公开(公告)日：2016-02-02

申请号：US14145632

申请日：2013-12-31

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lei Miao ,  Zexin Liu

IPC: G10L19/00 ,  G10L21/00 ,  G10L19/008 ,  G10L19/18 ,  G10L21/038 ,  G10L25/18

CPC classification number: G10L19/265 ,  G10L19/008 ,  G10L19/0204 ,  G10L19/087 ,  G10L19/18 ,  G10L21/038 ,  G10L25/18

Abstract: Example embodiments described herein generally provide for adaptive audio signal coding of low-frequency and high-frequency audio signals. More specifically, audio signals are categorized into high-frequency audio signals and low-frequency audio signals. Then, based on a set coding and/or characteristics of the low-frequency audio signals, the low-frequency coding manner is selected. Similarly, but in addition to, a bandwidth extension mode to code the high-frequency audio signals is selected according to the low-frequency coding manner and/or characteristics of the audio signals.

Abstract translation: 本文描述的示例性实施例通常提供低频和高频音频信号的自适应音频信号编码。 更具体地，音频信号被分类为高频音频信号和低频音频信号。 然后，基于低频音频信号的集合编码和/或特性，选择低频编码方式。 类似地，除了根据低频编码方式和/或音频信号的特性来选择对高频音频信号进行编码的带宽扩展模式。

公开(公告)号：US20150235653A1

公开(公告)日：2015-08-20

申请号：US14704502

申请日：2015-05-05

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.

Abstract translation: 音频信号编码和解码方法，音频信号编码和解码装置，发射机，接收机和通信系统，其可以改善编码和/或解码性能。 音频信号编码方法包括将待编码的时域信号划分成低频带信号和高频带信号; 编码低频信号以获得低频编码参数; 计算有声度因子，并预测高频激励信号; 使用有声度因子对高频带激励信号和随机噪声进行加权，以获得合成的激励信号; 以及基于合成的激励信号和高频带信号获得高频编码参数。 本发明实施例中的技术方案可以改善编码或解码效果。

公开(公告)号：US08930200B2

公开(公告)日：2015-01-06

申请号：US13950018

申请日：2013-07-24

Applicant: Huawei Technologies Co., Ltd.

Inventor： Fuwei Ma ,  Dejun Zhang ,  Lei Miao ,  Fengyan Qi

IPC: G10L19/00 ,  G10L21/00 ,  G10L13/00 ,  G10L19/04 ,  G10L19/038 ,  G10L19/107

CPC classification number: G10L19/038 ,  G01L19/12 ,  G10L19/04 ,  G10L19/107 ,  G10L19/12 ,  G10L21/00 ,  G10L2019/0005

Abstract: A vector joint encoding/decoding method and a vector joint encoder/decoder are provided, more than two vectors are jointly encoded, and an encoding index of at least one vector is split and then combined between different vectors, so that encoding idle spaces of different vectors can be recombined, thereby facilitating saving of encoding bits, and because an encoding index of a vector is split and then shorter split indexes are recombined, thereby facilitating reduction of requirements for the bit width of operating parts in encoding/decoding calculation.

Abstract translation: 提供了向量联合编码/解码方法和向量联合编码器/解码器，联合编码了两个以上的向量，并且将至少一个向量的编码索引分离，然后在不同向量之间组合，使得编码不同的空闲空间 可以重新组合向量，从而有助于节省编码比特，并且由于矢量的编码索引被分离，并且随后更短的分割索引被重新组合，从而有助于减少编码/解码计算中的操作部分的比特宽度的要求。

公开(公告)号：US08924221B2

公开(公告)日：2014-12-30

申请号：US13854043

申请日：2013-03-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zexin Liu ,  Lei Miao ,  Anisse Taleb

IPC: G10L19/20

CPC classification number: G10L19/032 ,  G10L19/025 ,  G10L19/20 ,  G10L21/038 ,  G10L25/18 ,  H04N19/60

Abstract: A method and a device for encoding a high frequency signal, and a method and a device for decoding a high frequency signal are provided, which relate to encoding and decoding technology. The method for encoding a high frequency signal includes: determining a signal type of a high frequency signal of a current frame; smoothing and scaling time envelopes of the high frequency signal of the current frame and obtaining time envelopes of the high frequency signal of the current frame that require to be encoded, if the high frequency signal of the current frame is a non-transient signal and a high frequency signal of the previous frame is a transient signal; and quantizing and encoding the time envelopes of the high frequency signal of the current frame that require to be encoded, and frequency information and signal type information of the high frequency signal of the current frame.

Abstract translation: 提供了一种编码高频信号的方法和装置，以及用于解码高频信号的方法和装置，其涉及编码和解码技术。 编码高频信号的方法包括：确定当前帧的高频信号的信号类型; 平滑和缩放当前帧的高频信号的时间包络并获得当前帧的高频信号需要被编码的时间包络，如果当前帧的高频信号是非瞬态信号，并且 前一帧的高频信号是瞬态信号; 对需要编码的当前帧的高频信号的时间包进行量化和编码，以及当前帧的高频信号的频率信息和信号类型信息。

公开(公告)号：US20140046672A1

公开(公告)日：2014-02-13

申请号：US14057924

申请日：2013-10-18

Applicant: Huawei Technologies Co., LTD.

Inventor： Zexin Liu ,  Lei Miao ,  Anisse Taleb

IPC: G10L19/26

CPC classification number: G10L19/265 ,  G10L19/008 ,  G10L19/0204 ,  G10L19/20 ,  G10L21/0388

Abstract: Embodiments of the present invention provide a signal classification method and device, and encoding and decoding methods and devices. The encoding method includes dividing a current frame into a low-frequency band signal and a high-frequency band signal, attenuating the high-frequency band signal or a to-be-encoded characteristic parameter of the high-frequency band signal according to an energy attenuation value of the low-frequency band signal, where the energy attenuation value indicates energy attenuation of the low-frequency band signal caused by encoding of the low-frequency band signal, and encoding the attenuated high-frequency band signal or the attenuated to-be-encoded characteristic parameter of the high-frequency band signal. The technical solutions according to the embodiments of the present invention can improve the effect of combining the low-frequency band signal and the high-frequency band signal at the decoder.

Abstract translation: 本发明的实施例提供信号分类方法和装置，以及编码和解码方法和装置。 该编码方法包括将当前帧划分成低频带信号和高频带信号，根据能量来衰减高频带信号或待编码特征参数的高频带信号 低频带信号的衰减值，其中能量衰减值指示由低频带信号的编码引起的低频带信号的能量衰减，以及对衰减的高频带信号或衰减的 - 高频带信号的被编码特征参数。 根据本发明的实施例的技术方案可以改善在解码器处组合低频带信号和高频带信号的效果。

公开(公告)号：US20130028191A1

公开(公告)日：2013-01-31

申请号：US13632905

申请日：2012-10-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Fengyan Qi ,  Lei Miao

IPC: H04W24/00

CPC classification number: G10L19/0017 ,  G10L19/24 ,  H04B7/0647

Abstract: An improved aperiodic downlink channel quality reporting in a radio communication system utilizing carrier aggregation is disclosed. In the radio communication system, a number of downlink component carriers can be aggregated for communication between, a network node and a User Equipment (UE). The invention is characterized in that a set of downlink component carriers is determined from the number of downlink component carriers, a downlink control channel for the UE is arranged to include information being usable for identifying at least one downlink component carrier of the set of downlink component carriers, and a channel quality report is to be provided for each one of the at least one identified downlink component carrier.

Abstract translation: 公开了一种利用载波聚合的无线电通信系统中改进的非周期下行链路信道质量报告。 在无线电通信系统中，可以聚合多个下行链路分量载波以在网络节点和用户设备（UE）之间进行通信。 本发明的特征在于从下行链路分量载波的数量确定一组下行链路分量载波，用于UE的下行链路控制信道被布置为包括可用于识别下行链路分量集合中的至少一个下行链路分量载波的信息 并且将为至少一个所识别的下行链路分量载波中的每一个提供信道质量报告。