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：US20130094655A1

公开(公告)日：2013-04-18

申请号：US13708611

申请日：2012-12-07

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Lei Miao ,  Chen Hu ,  Wenhai Wu ,  Yue Lang

IPC: G10L19/008

CPC classification number: H04S3/00 ,  G10L19/00 ,  G10L19/008

Abstract: Embodiments of the present invention provide a method and an apparatus for generating a sideband residual signal. The method includes: comparing energy of a first signal input by a first sound channel with energy of a second signal input by a second sound channel; if the energy of the first signal is greater than the energy of the second signal, generating a sideband residual signal by allocating a monophonic quantization error to the first signal; and if the energy of the first signal is smaller than the energy of the second signal, generating a sideband residual signal by allocating a monophonic quantization error to the second signal. By using the method and apparatus provided in the embodiments of the present invention, it can be avoided that a monophonic quantization error has a greater impact on a signal whose energy is smaller.

Abstract translation: 本发明的实施例提供一种用于生成边带残留信号的方法和装置。 该方法包括：将通过第一声道输入的第一信号的能量与由第二声道输入的第二信号的能量进行比较; 如果第一信号的能量大于第二信号的能量，则通过向第一信号分配单声道量化误差来产生边带残差信号; 并且如果第一信号的能量小于第二信号的能量，则通过向第二信号分配单声道量化误差来产生边带残留信号。 通过使用本发明实施例中提供的方法和装置，可以避免单声道量化误差对能量较小的信号的影响较大。

公开(公告)号：US11107486B2

公开(公告)日：2021-08-31

申请号：US16051139

申请日：2018-07-31

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Chen Hu ,  Zexin Liu ,  Lei Miao

IPC: G10L19/26 ,  G10L19/18 ,  G10L19/012 ,  G10L19/22

Abstract: The present disclosure provides a speech/audio signal processing method based on wideband switching and a coding apparatus. The method includes: if a first wideband speech/audio signal is a harmonic signal, adjusting a determining condition for determining that a second wideband speech/audio signal is a harmonic signal, to obtain a first determining condition, where the first wideband speech/audio signal is a signal before wideband switching, and the second wideband speech/audio signal is a signal after the wideband switching; and determining, according to the first determining condition, whether the second wideband speech/audio signal is a harmonic signal. In the case of wideband switching, signal types of speech/audio signals remain as consistent as possible before and after the switching, so that continuity of the speech/audio signal decoded by a decoder device is ensured as much as possible, further improving speech communication service quality.

公开(公告)号：US20180336910A1

公开(公告)日：2018-11-22

申请号：US16051139

申请日：2018-07-31

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Chen Hu ,  Zexin Liu ,  Lei Miao

IPC: G10L19/26 ,  G10L19/18 ,  G10L19/012 ,  G10L19/22

CPC classification number: G10L19/265 ,  G10L19/012 ,  G10L19/18 ,  G10L19/22

Abstract: The present disclosure provides a speech/audio signal processing method based on wideband switching and a coding apparatus. The method includes: if a first wideband speech/audio signal is a harmonic signal, adjusting a determining condition for determining that a second wideband speech/audio signal is a harmonic signal, to obtain a first determining condition, where the first wideband speech/audio signal is a signal before wideband switching, and the second wideband speech/audio signal is a signal after the wideband switching; and determining, according to the first determining condition, whether the second wideband speech/audio signal is a harmonic signal. In the case of wideband switching, signal types of speech/audio signals remain as consistent as possible before and after the switching, so that continuity of the speech/audio signal decoded by a decoder device is ensured as much as possible, further improving speech communication service quality.

公开(公告)号：US10032460B2

公开(公告)日：2018-07-24

申请号：US15715179

申请日：2017-09-26

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Chen Hu ,  Lei Miao ,  Zexin Liu

IPC: G10L21/00 ,  G10L19/038 ,  G10L19/06 ,  G10L19/00

CPC classification number: G10L19/038 ,  G10L19/06 ,  G10L2019/0005

Abstract: Embodiments of the present application proposes a frequency envelope vector quantization method and apparatus, where the method includes: dividing N frequency envelopes in one frame into N1 vectors; quantizing a first vector in the N1 vectors by using a first codebook, to obtain a code word corresponding to the quantized first vector, where the first codebook is divided into 2B1 portions; determining, according to the code word corresponding to the quantized first vector; determining a second codebook according to the codebook of the ith portion; and quantizing a second vector in the N1 vectors based on the second codebook. In the embodiments of the present application, vector quantization can be performed on frequency envelope vectors by using a codebook with a smaller quantity of bits. Therefore, complexity of vector quantization can be reduced, and an effect of vector quantization can also be ensured.