公开(公告)号：US20190066698A1

公开(公告)日：2019-02-28

申请号：US16149758

申请日：2018-10-02

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xuan ZHOU ,  Lei MIAO ,  Zexin LIU

IPC: G10L19/002 ,  G10L19/032 ,  G10L19/02

Abstract: The present disclosure provide a signal processing method and apparatus. The method includes: determining a total quantity of to-be-allocated bits corresponding to a current frame; implementing primary bit allocation on to-be-processed sub-bands; performing a primary information unit quantity determining operation for each sub-band that has undergone the primary bit allocation; selecting sub-bands for secondary bit allocation from the to-be-processed sub-bands according to at least one of a sub-band characteristic of each sub-band of the to-be-processed sub-bands or the total quantity of surplus bits; implementing secondary bit allocation on the sub-bands for secondary bit allocation; and performing a secondary information unit quantity determining operation for each sub-band of the sub-bands for secondary bit allocation.

公开(公告)号：US20160118055A1

公开(公告)日：2016-04-28

申请号：US14985831

申请日：2015-12-31

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Bin WANG ,  Lei MIAO ,  Zexin LIU

IPC: G10L19/005 ,  G10L21/0388 ,  G10L21/0232 ,  G10L19/02

CPC classification number: G10L19/005 ,  G10L19/0208 ,  G10L21/0232 ,  G10L21/0388

Abstract: Embodiments of the present disclosure provide a decoding method and a decoding apparatus. The decoding method includes: in a case in which it is determined that a current frame is a lost frame, synthesizing a high frequency band signal; determining subframe gains of multiple subframes of the current frame; determining a global gain of the current frame; and adjusting, according to the global gain and the subframe gains of the multiple subframes, the synthesized high frequency band signal to obtain a high frequency band signal of the current frame. A subframe gain of the current frame is obtained according to a gradient between subframe gains of subframes previous to the current frame, so that transition before and after frame loss is more continuous, thereby reducing noise during signal reconstruction, and improving speech quality.

Abstract translation: 本公开的实施例提供了一种解码方法和解码装置。 解码方法包括：在确定当前帧是丢失帧的情况下，合成高频带信号; 确定当前帧的多个子帧的子帧增益; 确定当前帧的全局增益; 并且根据多个子帧的全局增益和子帧增益来调整合成的高频带信号，以获得当前帧的高频带信号。 根据当前帧之前的子帧的子帧增益之间的梯度获得当前帧的子帧增益，使得在帧丢失之前和之后的转换更连续，从而减少信号重建期间的噪声，并提高语音质量。

公开(公告)号：US20150010021A1

公开(公告)日：2015-01-08

申请号：US14496986

申请日：2014-09-25

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Zexin LIU ,  Lei MIAO ,  Fengyan QI

IPC: H04L27/26 ,  H04L5/06

CPC classification number: G10L19/167 ,  G10L19/002 ,  G10L19/0204 ,  G10L19/06 ,  G10L19/26 ,  H04L5/06 ,  H04L27/2602

Abstract: In a signal coding method, bits for coding allocated to different bands of a frequency domain signal obtained from an input signal are adjusted to improve the coding quality. The total available bits for coding are first allocated to the bands of the frequency domain signal according to a predetermined allocation rule. The numbers of bits allocated to the respective bands of the frequency domain signal are then adjusted when a highest frequency of the frequency domain signal to which bits are allocated is greater than a predetermined value. The frequency domain signal is coded according to the adjusted bit allocation for the bands of the frequency domain signal.

Abstract translation: 在信号编码方法中，调整分配给从输入信号获得的频域信号的不同频带的编码比特，以提高编码质量。 根据预定的分配规则，首先将用于编码的总可用比特分配给频域信号的频带。 然后，当分配比特的频域信号的最高频率大于预定值时，调整分配给频域信号的各个频带的比特数。 根据针对频域信号的频带的调整后的比特分配对频域信号进行编码。

公开(公告)号：US20150006163A1

公开(公告)日：2015-01-01

申请号：US14470559

申请日：2014-08-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zexin LIU ,  Lei MIAO

IPC: G10L19/00

CPC classification number: G10L19/00 ,  G10L19/0204 ,  G10L19/083

Abstract: The present invention discloses a speech/audio signal processing method and apparatus. In an embodiment, the speech/audio signal processing method includes: when a speech/audio signal switches bandwidth, obtaining an initial high frequency signal corresponding to a current frame of speech/audio signal; obtaining a time-domain global gain parameter of the initial high frequency signal; performing weighting processing on an energy ratio and the time-domain global gain parameter, and using an obtained weighted value as a predicted global gain parameter, where the energy ratio is a ratio between energy of a historical frame of high frequency time-domain signal and energy of a current frame of initial high frequency signal; correcting the initial high frequency signal by using the predicted global gain parameter, to obtain a corrected high frequency time-domain signal; and synthesizing a current frame of narrow frequency time-domain signal and the corrected high frequency time-domain signal and outputting the synthesized signal.

Abstract translation: 本发明公开了一种语音/音频信号处理方法和装置。 在一个实施例中，语音/音频信号处理方法包括：当语音/音频信号切换带宽时，获得对应于当前语音/音频信号帧的初始高频信号; 获得初始高频信号的时域全局增益参数; 对能量比进行加权处理和时域全局增益参数，并使用获得的加权值作为预测的全局增益参数，其中能量比是高频时域信号的历史帧的能量与 初始高频信号当前帧的能量; 通过使用预测的全局增益参数来校正初始高频信号，以获得校正的高频时域信号; 并合成窄频时域信号的当前帧和经校正的高频时域信号并输出​​合成信号。

公开(公告)号：US20200176001A1

公开(公告)日：2020-06-04

申请号：US16785274

申请日：2020-02-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Bin WANG ,  Haiting LI ,  Lei MIAO

IPC: G10L19/008 ,  G10L19/22

Abstract: 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.

公开(公告)号：US20200176000A1

公开(公告)日：2020-06-04

申请号：US16785174

申请日：2020-02-07

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Haiting LI ,  Bin WANG ,  Lei MIAO

IPC: G10L19/008 ,  G10L19/20 ,  G10L19/22

Abstract: An audio encoding and decoding method and a 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, 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 corresponding 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; and encoding the obtained primary channel signal and secondary channel signal in the current frame.

公开(公告)号：US20190272838A1

公开(公告)日：2019-09-05

申请号：US16417195

申请日：2019-05-20

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zexin LIU ,  Lei MIAO

IPC: G10L19/12 ,  G10L19/08 ,  G10L21/038 ,  G10L19/24 ,  G10L19/06 ,  G10L19/02

Abstract: A decoder for processing an audio signal receives an audio bitstream, decodes the bitstream to obtain a set of spectral frequency parameters that are arranged in an order of frequencies, determines a minimum spectral frequency parameter difference from a plurality of calculated spectral frequency parameter differences, determines a start frequency bin for predicting a high band excitation signal according to the minimum spectral frequency parameter difference, generates the high band excitation signal by selecting a frequency band with a preset bandwidth selected from a low band excitation signal according to the start frequency bin, and synthesizes a wideband signal based on the generated high band excitation signal.

公开(公告)号：US20190251980A1

公开(公告)日：2019-08-15

申请号：US16396253

申请日：2019-04-26

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Bin WANG ,  Zexin LIU ,  Lei MIAO

IPC: G10L19/083 ,  G10L19/02 ,  G10L21/038 ,  G10L25/93 ,  G10L19/005 ,  G10L21/0388

Abstract: The present disclosure relates methods and apparatus for recovering a lost frame in a received audio signal. One example method includes obtaining an initial high-frequency band signal of a current lost frame in the received audio signal, calculating a ratio R, where the ratio R is a ratio of a high frequency excitation energy of a previous frame of the current lost frame to a high frequency excitation energy of the current lost frame, obtaining a global gain of the current lost frame according to the ratio R and a global gain of the previous frame of the current lost frame, and recovering a high-frequency band signal of the current lost frame according to the initial high-frequency band signal of the current lost frame and the global gain of the current lost frame.

公开(公告)号：US20160323687A1

公开(公告)日：2016-11-03

申请号：US15210644

申请日：2016-07-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： Wenhai WU ,  Lei MIAO ,  Yue LANG ,  Qi ZHANG

IPC: H04S5/00 ,  G10L19/008

CPC classification number: H04S5/005 ,  G10L19/008 ,  H04S5/00 ,  H04S2420/01 ,  H04S2420/03

Abstract: A stereo decoding method and apparatus are disclosed. The method includes: restoring a monophonic signal from a received code stream through decoding; restoring an interchannel level difference, a group delay, and a group phase from the received code stream through decoding; and processing the monophonic signal according to the interchannel level difference, group delay, and group phase to obtain a first channel signal and a second channel signal. According to the stereo decoding method and apparatus provided in embodiments of the present invention, the first and second channel signals are obtained according to the monophonic signal, ILD, group delay, and group phase by referring to not only the ILD but also the group delay and group phase, thereby yielding favorable stereo sound field effect for the obtained first and second channel signals.

Abstract translation: 公开了一种立体声解码方法和装置。 该方法包括：通过解码从接收到的码流中恢复单声道信号; 通过解码从接收到的代码流中恢复通道间级差，组延迟和组相位; 以及根据通道间电平差，组延迟和组相位处理单声道信号以获得第一通道信号和第二通道信号。 根据本发明的实施例中提供的立体声解码方法和装置，不仅参照ILD而且还参照组延迟，根据单声道信号，ILD，组延迟和组相位来获得第一和第二声道信号 和组相位，从而为获得的第一和第二信道信号产生有利的立体声场效应。

公开(公告)号：US20140114670A1

公开(公告)日：2014-04-24

申请号：US14145632

申请日：2013-12-31

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lei MIAO ,  Zexin LIU

IPC: G10L19/008

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。