公开(公告)号：US10021500B2

公开(公告)日：2018-07-10

申请号：US15057508

申请日：2016-03-01

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jianfeng Xu ,  Xiangjun Wang ,  Qing Zhang

IPC: H04R5/00 ,  H04S5/02 ,  H04R29/00 ,  G10L19/008 ,  G10L19/02

CPC classification number: H04S5/02 ,  G10L19/008 ,  G10L19/0204 ,  H04R2499/11 ,  H04S2400/05 ,  H04S2420/07

Abstract: An audio file playing method and an apparatus are disclosed and are used to: when an audio file is played, expand a quantity of audio channel signals in the audio file and improve a playing effect of the audio file. The method is as follows: after the audio file is obtained, determining, whether the audio file includes an audio channel signal that can be played by the mobile device; if the audio file includes the audio channel signal that can be played by the mobile device, directly playing the audio channel signal. Therefore, when multiple mobile devices are used to play a same audio file, the mobile devices can avoid performing a same operation, thereby increasing a quantity of audio channels of the audio file, expanding a sound field of the audio file, and improving a playing effect of the audio file.

公开(公告)号：US09996503B2

公开(公告)日：2018-06-12

申请号：US15696091

申请日：2017-09-05

Applicant: Huawei Technologies Co., Ltd.

Inventor： Deming Zhang ,  Haiting Li ,  Anisse Taleb ,  Jianfeng Xu

IPC: G06F17/14 ,  G10L19/022 ,  G10L19/02

CPC classification number: G06F17/142 ,  G06F17/141 ,  G06F17/147 ,  G10L19/0212 ,  G10L19/022

Abstract: A method for processing an audio signal, including: sound is converted to an analog audio input signal and converted into a digital audio signal; a windowed time domain signal is obtained and then a twiddled signal is obtained; the twiddled signal is pre-rotated and then an FFT is performed; an in-place fixed rotate compensation is performed on the FFT signal and then an post-rotated is performed; a quantized signal is obtained and then wrote into a bitstream for transmitting or storing.

公开(公告)号：US09401151B2

公开(公告)日：2016-07-26

申请号：US14102024

申请日：2013-12-10

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yue Lang ,  David Virette ,  Jianfeng Xu

IPC: H04R5/00 ,  G10L19/008 ,  H04S3/00

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

Abstract: The invention relates to a parametric audio encoder, comprising a parameter generator, the parameter generator being configured to determine a first set of encoding parameters and reference audio signal values, wherein the reference audio signal is another audio channel signal or a downmix audio signal derived from at least two audio channel signals of the plurality of multi-channel audio signals, to determine a first encoding parameter average based on the first set of encoding parameters of the audio channel signal, to determine a second encoding parameter average based on the first encoding parameter average of the audio channel signal and at least one other first encoding parameter average of the audio channel signal, and to determine the encoding parameter based on the first encoding parameter average of the audio channel signal and the second encoding parameter average of the audio channel signal.

Abstract translation: 本发明涉及一种参数音频编码器，包括参数发生器，参数发生器被配置为确定第一组编码参数和参考音频信号值，其中参考音频信号是另一个音频信道信号或从 多个多声道音频信号的至少两个音频通道信号，以基于音频通道信号的第一组编码参数来确定第一编码参数平均值，以基于第一编码参数确定第二编码参数平均值 音频信道信号的平均值和音频信道信号的至少一个其它第一编码参数平均值，并且基于音频信道信号的第一编码参数平均值和音频信道信号的第二编码参数平均值来确定编码参数 。

公开(公告)号：US09082396B2

公开(公告)日：2015-07-14

申请号：US13744690

申请日：2013-01-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Christof Faller ,  David Virette ,  Yue Lang ,  Jianfeng Xu

IPC: G10L19/008

CPC classification number: G10L19/008

Abstract: The invention relates to an audio signal synthesizer, the audio signal synthesizer comprises a transformer for transforming the down-mix audio signal into frequency domain to obtain a transformed audio signal; a signal generator for generating a first auxiliary signal, for generating a second auxiliary signal, and for generating a third auxiliary signal upon the basis of the transformed audio signal; a de-correlator for generating a first de-correlated signal, and for generating a second de-correlated signal from the third auxiliary signal, the first de-correlated signal and the second de-correlated signal being at least partly de-correlated; and a combiner for combining the first auxiliary signal with the first de-correlated signal to obtain a first audio signal, and for combining the second auxiliary signal with the second de-correlated signal to obtain the second audio signal, the first audio signal and the second audio signal forming the multi-channel audio signal.

Abstract translation: 音频信号合成器本发明涉及一种音频信号合成器，该音频信号合成器包括一个变换器，用于将混音音频信号转换成频域以获得经变换的音频信号; 信号发生器，用于产生第一辅助信号，用于产生第二辅助信号，并且用于根据经变换的音频信号产生第三辅助信号; 一个去相关器，用于产生第一去相关信号，并用于从第三辅助信号产生第二去相关信号，第一去相关信号和第二解相关信号至少部分地去相关; 以及组合器，用于将第一辅助信号与第一去相关信号组合以获得第一音频信号，并且用于将第二辅助信号与第二去相关信号组合以获得第二音频信号，第一音频信号和 形成多声道音频信号的第二音频信号。

公开(公告)号：US08831961B2

公开(公告)日：2014-09-09

申请号：US13914206

申请日：2013-06-10

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lei Miao ,  Fengyan Qi ,  Jianfeng Xu ,  Dejun Zhang ,  Qing Zhang

IPC: G10L19/00 ,  G10L19/18 ,  G10L21/06 ,  G10L19/06 ,  G10L19/09

CPC classification number: G10L21/06 ,  G10L19/06 ,  G10L19/09 ,  G10L19/18

Abstract: The present disclosure relates to coding and decoding technologies, and discloses a preprocessing method, a preprocessing apparatus, and a coding device. The preprocessing method includes: obtaining characteristic information of a current frame signal; identifying whether the current frame signal requires no coding operation of removing LTC according to the characteristic information of the current frame signal and preset information; and if identifying that the current frame signal requires no coding operation of removing LTC, performing the coding operation of removing STC for the current frame signal; and if identifying that the current frame signal requires the coding operation of removing LTC, performing the coding operations of removing both LTC and STC for the current frame signal. Through the technical solution provided herein, the coding operation of removing LTC is performed for only part of the input frame signals.

Abstract translation: 本公开涉及编码和解码技术，并且公开了一种预处理方法，预处理装置和编码装置。 预处理方法包括：获得当前帧信号的特征信息; 识别当前帧信号是否不需要根据当前帧信号和预设信息的特征信息去除LTC的编码操作; 并且如果识别出当前帧信号不需要去除LTC的编码操作，则执行去除当前帧信号的STC的编码操作; 并且如果识别当前帧信号需要去除LTC的编码操作，则执行去除当前帧信号的LTC和STC的编码操作。 通过本文提供的技术方案，仅对部分输入帧信号执行去除LTC的编码操作。

公开(公告)号：US20140164001A1

公开(公告)日：2014-06-12

申请号：US14145432

申请日：2013-12-31

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yue Lang ,  David Virette ,  Jianfeng Xu

IPC: G10L19/008

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

Abstract: Methods and devices for a low complex inter-channel phase difference estimation are provided. A method for the estimation of inter-channel phase differences (IPDs), comprises applying a transformation from a time domain to a frequency domain to a plurality of audio channel signals, calculating a plurality of IPD values for the IPDs between at least one of the plurality of audio channel signals and a reference audio channel signal over a predetermined frequency range, each IPD value being calculated over a portion of the predetermined frequency range, calculating, for each of the plurality of IPD values, a weighted IPD value by multiplying each of the plurality of IPD values with a corresponding frequency-dependent weighting factor, and calculating an IPD range value for the predetermined frequency range by adding the plurality of weighted IPD values.

Abstract translation: 提供了用于低复杂信道间相位差估计的方法和装置。 一种用于估计信道间相位差（IPD）的方法，包括将从时域到频域的变换应用于多个音频信道信号，计算IPD中的至少一个之间的多个IPD值， 多个音频信道信号和参考音频信道信号，每个IPD值在预定频率范围的一部分上被计算，对于多个IPD值中的每一个，通过将每个IPD值乘以加权IPD值， 所述多个IPD值具有相应的频率相关加权因子，并且通过添加所述多个加权IPD值来计算所述预定频率范围的IPD范围值。

公开(公告)号：US20130129096A1

公开(公告)日：2013-05-23

申请号：US13744690

申请日：2013-01-18

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Christof Faller ,  David Virette ,  Yue Lang ,  Jianfeng Xu

IPC: G10L19/008

CPC classification number: G10L19/008

Abstract: The invention relates to an audio signal synthesizer, the audio signal synthesizer comprises a transformer for transforming the down-mix audio signal into frequency domain to obtain a transformed audio signal; a signal generator for generating a first auxiliary signal, for generating a second auxiliary signal, and for generating a third auxiliary signal upon the basis of the transformed audio signal; a de-correlator for generating a first de-correlated signal, and for generating a second de-correlated signal from the third auxiliary signal, the first de-correlated signal and the second de-correlated signal being at least partly de-correlated; and a combiner for combining the first auxiliary signal with the first de-correlated signal to obtain a first audio signal, and for combining the second auxiliary signal with the second de-correlated signal to obtain the second audio signal, the first audio signal and the second audio signal forming the multi-channel audio signal.

Abstract translation: 音频信号合成器本发明涉及一种音频信号合成器，该音频信号合成器包括一个变换器，用于将混音音频信号转换成频域以获得经变换的音频信号; 信号发生器，用于产生第一辅助信号，用于产生第二辅助信号，并且用于根据经变换的音频信号产生第三辅助信号; 一个去相关器，用于产生第一去相关信号，并用于从第三辅助信号产生第二去相关信号，第一去相关信号和第二解相关信号至少部分地去相关; 以及组合器，用于将第一辅助信号与第一去相关信号组合以获得第一音频信号，并且用于将第二辅助信号与第二去相关信号组合以获得第二音频信号，第一音频信号和 形成多声道音频信号的第二音频信号。

公开(公告)号：US11246039B2

公开(公告)日：2022-02-08

申请号：US16883120

申请日：2020-05-26

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ruihua Li ,  Hua Chen ,  Dawei Huo ,  Wei Xiao ,  Jianfeng Xu ,  Heng Liao

IPC: H04L29/06 ,  H04W12/55 ,  H04W12/08 ,  H04W12/30 ,  H04W12/06

Abstract: This application provides a method for secure multi-terminal cooperative working, applied to a network on which a plurality of terminal devices perform cooperative playing and/or cooperative recording, where the plurality of terminal devices include a first terminal device. The method includes: determining, by the first terminal device, a security mechanism; obtaining, by the first terminal device, cooperative working information, where the cooperative working information is information played and/or recorded by the plurality of terminal devices; and performing, by the first terminal device, security processing on the cooperative working information based on the security mechanism. After obtaining the cooperative working information, the first terminal device performs security processing on the cooperative working information based on the security mechanism, so that a process other than the cooperative working process cannot access the cooperative working information, thereby ensuring security of the cooperative working information.

公开(公告)号：US20170075860A1

公开(公告)日：2017-03-16

申请号：US15345074

申请日：2016-11-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Deming Zhang ,  Haiting Li ,  Anisse Taleb ,  Jianfeng Xu

IPC: G06F17/14

CPC classification number: G06F17/142 ,  G06F17/141 ,  G06F17/147 ,  G10L19/0212 ,  G10L19/022

Abstract: An embodiment of the present invention discloses a data processing method, including: twiddling input data, so as to obtain twiddled data; pre-rotating the twiddled data by using a symmetric rotate factor, where the rotate factor is a·W4L2p+1, p=0, . . . , L/2−1, and a is a constant; performing a Fast Fourier (Fast Fourier Transform, FFT) transform of L/2 point on the pre-rotated data, where L is the length of the input data; post-rotating the data that has undergone the FFT transform by using a symmetric rotate factor, where the rotate factor is b·W4L2q+1, q=0, . . . , L/2−1, and b is a constant; and obtaining output data.

Abstract translation: 本发明的一个实施例公开了一种数据处理方法，包括：对输入数据进行加密，以获得二进制数据; 通过使用对称的旋转因子来预先旋转二进制数据，其中旋转因子为·W4L2p + 1，p = 0。 。 。 ，L / 2-1，a为常数; 在预旋转数据上执行L / 2点的快速傅里叶（Fast Fourier Transform，FFT）变换，其中L是输入数据的长度; 通过使用旋转因数为b·W4L2q + 1，q = 0的对称旋转因子对经过FFT变换的数据进行后转。 。 。 ，L / 2-1，b为常数; 并获得输出数据。

公开(公告)号：US20130304784A1

公开(公告)日：2013-11-14

申请号：US13938834

申请日：2013-07-10

Applicant: Huawei Technologies Co., Ltd.

Inventor： Deming Zhang ,  Haiting Li ,  Taleb Anisse ,  Jianfeng Xu

IPC: G06F17/14

CPC classification number: G06F17/142 ,  G06F17/141 ,  G06F17/147 ,  G10L19/0212 ,  G10L19/022

Abstract: A data processing method is disclosed, including: twiddling input data, so as to obtain twiddled data; pre-rotating the twiddled data by using a symmetric rotate factor, where the rotate factor is a·W4L2p+1, p=0, . . . , L/2−1, and α is a constant; performing a Fast Fourier (Fast Fourier Transform, FFT) transform of L/2 point on the pre-rotated data, where L is the length of the input data; post-rotating the data that has undergone the FFT transform by using a symmetric rotate factor, where the rotate factor is b·W4L2q+1, q=0, . . . , L/2−1, and b is a constant; and obtaining output data.

Abstract translation: 公开了一种数据处理方法，包括：对输入数据进行加密，以获得二进制数据; 通过使用对称的旋转因子来预先旋转二进制数据，其中旋转因子为·W4L2p + 1，p = 0。 。 。 ，L / 2-1，α是常数; 在预旋转数据上执行L / 2点的快速傅里叶（Fast Fourier Transform，FFT）变换，其中L是输入数据的长度; 通过使用旋转因数为b·W4L2q + 1，q = 0的对称旋转因子对经过FFT变换的数据进行后转。 。 。 ，L / 2-1，b为常数; 并获得输出数据。