公开(公告)号：US09406302B2

公开(公告)日：2016-08-02

申请号：US14144874

申请日：2013-12-31

Applicant: Huawei Technologies Co., Ltd.

Inventor： Anisse Taleb ,  David Virette ,  Liyun Pang ,  Yue Lang

IPC: G10L19/008 ,  G10L21/04 ,  G10L21/055 ,  G10L19/16

CPC classification number: G10L19/008 ,  G10L19/167 ,  G10L21/04 ,  G10L21/055

Abstract: The invention relates to a method for processing a multi-channel audio signal which carries a plurality of audio channel signals. The method comprises determining a time-scaling position using the plurality of audio channel signals and time-scaling each audio channel signal of the plurality of audio channel signals according to the time-scaling position to obtain a plurality of time scaled audio channel signals.

Abstract translation: 本发明涉及一种用于处理携带多个音频信道信号的多声道音频信号的方法。 该方法包括使用多个音频信道信号确定时间缩放位置，并根据时间缩放位置对多个音频信道信号的每个音频信道信号进行时间缩放，以获得多个时间缩放的音频信道信号。

公开(公告)号：US08682645B2

公开(公告)日：2014-03-25

申请号：US13862655

申请日：2013-04-15

Applicant: Huawei Technologies Co., Ltd.

Inventor： Anisse Taleb ,  Fengyan Qi ,  Chen Hu

IPC: G06F17/20

CPC classification number: G10L19/022 ,  G10L19/0212 ,  G10L19/20

Abstract: The present disclosure relates to a signal analyzer for processing an overlapped input signal frame comprising 2N subsequent input signal values. The signal analyzer comprises: a windower adapted to window the overlapped input signal frame to obtain a windowed signal, wherein the windower is adapted to zero M+N/2 subsequent input signal values of the overlapped input signal frame, wherein M is equal or greater than 1 and smaller than N/2; and a transformer adapted to transform the remaining 3N/2−M subsequent windowed signal values of the windowed signal using N−M sets of transform parameters to obtain a transformed-domain signal comprising N−M transformed-domain signal values.

Abstract translation: 本公开涉及一种用于处理包括2N个后续输入信号值的重叠输入信号帧的信号分析器。 所述信号分析器包括：风力发电机，其适于窗口重叠的输入信号帧以获得加窗信号，其中，所述加窗器适用于重叠输入信号帧的M + N / 2个后续输入信号值，其中M等于或大于 小于1，小于N / 2; 以及变压器，其适于使用N-M组变换参数来变换所述加窗信号的剩余3N / 2-M后续窗口化信号值，以获得包括N-M个变换域信号值的变换域信号。

公开(公告)号：US08600765B2

公开(公告)日：2013-12-03

申请号：US13728201

申请日：2012-12-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zexin Liu ,  Lei Miao ,  Anisse Taleb

IPC: G10L19/00 ,  G10L19/02 ,  G10L15/00 ,  G10L19/14 ,  G10L11/04

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; 根据低频带信号的能量衰减值对高频带信号的高频带信号或待编码的特征参数进行衰减，其中能量衰减值表示低频带信号的能量衰减 由低频带信号的编码引起的频带信号; 对衰减的高频带信号或衰减的待编码的高频信号的特征参数进行编码。 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：US20130226595A1

公开(公告)日：2013-08-29

申请号：US13854043

申请日：2013-03-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zexin Liu ,  Lei Miao ,  Anisse Taleb

IPC: G10L19/032

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。