公开(公告)号：US20170178633A1

公开(公告)日：2017-06-22

申请号：US15451866

申请日：2017-03-07

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Zexin Liu ,  Fengyan Qi ,  Lei Miao

IPC: G10L19/002 ,  G10L19/028 ,  G10L19/02

CPC classification number: G10L19/002 ,  G10L19/0204 ,  G10L19/028

Abstract: A method and device for decoding a signal. The method for decoding a signal includes: obtaining spectral coefficients of sub-bands from a received bitstream by means of decoding; classifying sub-bands in which the spectral coefficients are located into a sub-band with saturated bit allocation and a sub-band with unsaturated bit allocation; performing noise filling on a spectral coefficient that has not been obtained by means of decoding and is in the sub-band with unsaturated bit allocation, so as to restore the spectral coefficient that has not been obtained by means of decoding; and obtaining a frequency domain signal according to the spectral coefficients obtained by means of decoding and the restored spectral coefficient. Therefore, a sub-band with unsaturated bit allocation in a frequency domain signal may be obtained by classification, thereby improving signal decoding quality.

公开(公告)号：US20170084282A1

公开(公告)日：2017-03-23

申请号：US15369396

申请日：2016-12-05

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Zexin Liu ,  Lei Miao

IPC: G10L19/028 ,  G10L21/0316 ,  G10L21/038 ,  G10L19/16

CPC classification number: G10L19/028 ,  G10L19/167 ,  G10L19/26 ,  G10L21/02 ,  G10L21/0316 ,  G10L21/038

Abstract: Method and apparatus are provided for reconstructing a noise component of a speech/audio signal. A bitstream, is received and decoded to obtain a speech/audio signal. A first speech/audio signal is determined according to the speech/audio signal. A symbol of each sample value in the first speech/audio signal and an amplitude value of each sample value in the first speech/audio signal is determined. An adaptive normalization length and an adjusted amplitude value of each sample value are determined according to the adaptive normalization length and the amplitude value of each sample value. A second speech/audio signal is determined according to the symbol of each sample value and the adjusted amplitude value of each sample value.

公开(公告)号：US20170076733A1

公开(公告)日：2017-03-16

申请号：US15358649

申请日：2016-11-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zexin Liu ,  Lei Miao ,  Fengyan Qi

IPC: G10L19/16 ,  G10L19/02 ,  G10L19/06

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：US09584944B2

公开(公告)日：2017-02-28

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: H04R5/00 ,  G06F17/00 ,  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：US20170053661A1

公开(公告)日：2017-02-23

申请号：US15341451

申请日：2016-11-02

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lei Miao ,  Zexin Liu

IPC: G10L19/26 ,  G10L19/087 ,  G10L19/18 ,  G10L19/02

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

Abstract: The present disclosure relates to an audio signal coding method and apparatus. The method includes categorizing audio signals into high-frequency audio signals and low-frequency audio signals, coding the low-frequency audio signals using a corresponding low-frequency coding manner according to characteristics of low-frequency audio signals, and selecting a bandwidth extension mode to code the high-frequency audio signals according to the low-frequency coding manner and/or characteristics of the audio signals.

Abstract translation: 本公开涉及音频信号编码方法和装置。 该方法包括将音频信号分为高频音频信号和低频音频信号，根据低频音频信号的特性，使用相应的低频编码方式对低频音频信号进行编码，并选择带宽扩展模式 根据低频编码方式和/或音频信号的特性对高频音频信号进行编码。

公开(公告)号：US09537694B2

公开(公告)日：2017-01-03

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 ,  G10L19/002 ,  G10L19/02 ,  G10L19/26

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：US20160307577A1

公开(公告)日：2016-10-20

申请号：US15192405

申请日：2016-06-24

Applicant: Huawei Technologies Co., Ltd.

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

IPC: 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.

公开(公告)号：US20160247513A1

公开(公告)日：2016-08-25

申请号：US15146079

申请日：2016-05-04

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zexin Liu ,  Lei Miao ,  Fengyan Qi

IPC: G10L19/12 ,  G10L19/02

CPC classification number: G10L19/12 ,  G10L19/02 ,  G10L19/08 ,  G10L21/038

Abstract: A method for predicting a bandwidth extension frequency band signal includes demultiplexing a received bitstream to obtain a frequency domain signal; determining whether a highest frequency bin, to which a bit is allocated, of the frequency domain signal is less than a preset start frequency bin of a bandwidth extension frequency band; predicting an excitation signal of the bandwidth extension frequency band according to the determination; and predicting the bandwidth extension frequency band signal according to the predicted excitation signal of the bandwidth extension frequency band and a frequency envelope of the bandwidth extension frequency band.

公开(公告)号：US20150332699A1

公开(公告)日：2015-11-19

申请号：US14808145

申请日：2015-07-24

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zexin Liu ,  Lei Miao ,  Fengyan Qi

IPC: G10L19/20 ,  G10L21/038

CPC classification number: G10L19/20 ,  G10L19/04 ,  G10L21/02 ,  G10L21/038

Abstract: A method includes obtaining a signal type of an audio signal and a low frequency band signal of the audio signal, where the audio signal includes the low frequency band signal and a high frequency band signal; obtaining a frequency envelope of the high frequency band signal according to the signal type; predicting an excitation signal of the high frequency band signal according to the low frequency band signal; and restoring the high frequency band signal according to the frequency envelope of the high frequency band signal and the excitation signal of the high frequency band signal. By using the technical solutions of the embodiments of the present invention, an error existing between a high frequency band signal obtained by prediction and an actual high frequency band signal can be effectively reduced, and an accuracy rate of the predicted high frequency band signal can be increased.

Abstract translation: 一种方法包括获得音频信号的信号类型和音频信号的低频带信号，其中音频信号包括低频带信号和高频带信号; 根据信号类型获得高频信号的频率包络; 根据低频带信号预测高频信号的激励信号; 以及根据高频带信号的频率包络和高频带信号的激励信号恢复高频带信号。 通过使用本发明的实施例的技术方案，可以有效地减少通过预测获得的高频带信号与实际的高频带信号之间存在的误差，并且预测的高频带信号的精度率可以是 增加。

公开(公告)号：US20150269947A1

公开(公告)日：2015-09-24

申请号：US14730524

申请日：2015-06-04

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zexin Liu ,  Fengyan Qi ,  Lei Miao

IPC: G10L19/002 ,  G10L19/02

CPC classification number: G10L19/002 ,  G10L19/0204 ,  G10L19/028

Abstract: A method and device for decoding a signal. The method for decoding a signal includes: obtaining spectral coefficients of sub-bands from a received bitstream by means of decoding; classifying sub-bands in which the spectral coefficients are located into a sub-band with saturated bit allocation and a sub-band with unsaturated bit allocation; performing noise filling on a spectral coefficient that has not been obtained by means of decoding and is in the sub-band with unsaturated bit allocation, so as to restore the spectral coefficient that has not been obtained by means of decoding; and obtaining a frequency domain signal according to the spectral coefficients obtained by means of decoding and the restored spectral coefficient. Therefore, a sub-band with unsaturated bit allocation in a frequency domain signal may be obtained by classification, thereby improving signal decoding quality.

Abstract translation: 一种解码信号的方法和装置。 用于解码信号的方法包括：通过解码从接收到的比特流获得子带的频谱系数; 将频谱系数定位到具有饱和比特分配的子带和具有不饱和比特分配的子带的子带中; 对未通过解码获得的频谱系数进行噪声填充，并且在具有不饱和位分配的子带中进行噪声填充，以恢复未通过解码获得的频谱系数; 并根据通过解码获得的频谱系数和恢复的频谱系数获得频域信号。 因此，可以通过分类获得频域信号中具有不饱和位分配的子带，从而提高信号解码质量。