公开(公告)号：US20150049872A1

公开(公告)日：2015-02-19

申请号：US14498613

申请日：2014-09-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： David VIRETTE ,  Yue LANG ,  Jianfeng XU

IPC: G10L19/008

CPC classification number: G10L19/008 ,  G10L19/0204

Abstract: The invention relates to a method for determining an encoding parameter for an audio channel signal of a multi-channel audio signal, the method comprising: determining a frequency transform of the audio channel signal; determining a frequency transform of a reference audio signal; determining inter channel differences for at least each frequency sub-band of a subset of frequency sub-bands, each inter channel difference indicating a phase difference or time difference between a band-limited signal portion of the audio channel signal and a band-limited signal portion of the reference audio signal in the respective frequency sub-band the inter-channel difference is associated to; determining a first average based on positive values of the inter-channel differences and determining a second average based on negative values of the inter-channel differences; and determining the encoding parameter based on the first average and on the second average.

Abstract translation: 本发明涉及一种用于确定多声道音频信号的音频信道信号的编码参数的方法，该方法包括：确定音频信道信号的频率变换; 确定参考音频信号的频率变换; 确定频率子带子集的至少每个频率子带的信道间差异，每个信道间差异指示音频信道信号的带限信号部分与频带限制信号之间的相位差或时间差 相应频率子带中的参考音频信号的部分信道间差异相关联; 基于信道间差异的正值确定第一平均值，并且基于信道间差异的负值确定第二平均值; 以及基于所述第一平均值和所述第二平均值确定所述编码参数。

公开(公告)号：US20150010155A1

公开(公告)日：2015-01-08

申请号：US14498625

申请日：2014-09-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： David VIRETTE ,  Yue LANG ,  Jianfeng XU

IPC: G10L19/008

CPC classification number: G10L19/008 ,  G10L25/06

Abstract: The invention relates to a method for determining an encoding parameter for an audio channel signal of a multi-channel audio signal, the method comprising: determining for the audio channel signal a set of functions from the audio channel signal and a reference audio signal; determining a first set of encoding parameters based on a smoothing of the set of functions with respect to a frame sequence of the multi-channel audio signal, the smoothing being based on a first smoothing coefficient; determining a second set of encoding parameters based on a smoothing of the set of functions with respect to the frame sequence of the multi-channel audio signal, the smoothing being based on a second smoothing coefficient; and determining the encoding parameter based on a quality criterion with respect to the first set of encoding parameters and/or the second set of encoding parameters.

Abstract translation: 本发明涉及一种用于确定多声道音频信号的音频信道信号的编码参数的方法，该方法包括：根据音频信道信号和参考音频信号确定音频信道信号的一组功能; 基于相对于多声道音频信号的帧序列的函数集的平滑来确定第一组编码参数，所述平滑基于第一平滑系数; 基于相对于多声道音频信号的帧序列的函数集的平滑来确定第二组编码参数，所述平滑基于第二平滑系数; 以及基于关于第一组编码参数和/或第二组编码参数的质量标准来确定编码参数。

公开(公告)号：US20140355767A1

公开(公告)日：2014-12-04

申请号：US14460074

申请日：2014-08-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： David VIRETTE ,  Janusz KLEJSA ,  Willem Bastiaan KLEIJN

IPC: G10L19/008

CPC classification number: G10L19/008

Abstract: A method and apparatus for performing an adaptive down-mixing of a multichannel audio signal comprising a number of input channels, wherein a signal adaptive transformation of said input channels is performed by multiplying the input channels with a downmix block matrix comprising a fixed block for providing a set of backward compatible primary channels and a signal adaptive block for providing a set of secondary channels

Abstract translation: 一种用于执行包括多个输入通道的多通道音频信号的自适应降混的方法和装置，其中所述输入通道的信号自适应变换通过将输入通道与包括固定块的下混块矩阵相乘来进行，以提供 一组向后兼容的主信道和用于提供一组次信道的信号自适应块

公开(公告)号：US20140012571A1

公开(公告)日：2014-01-09

申请号：US13957078

申请日：2013-08-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Anisse TALEB ,  Jianfeng XU ,  David VIRETTE

IPC: H04L29/06

CPC classification number: H04L29/0651 ,  G10L19/06 ,  G10L19/08 ,  G10L25/06 ,  G10L25/12

Abstract: A method and apparatus for providing signal processing coefficients for processing an input signal at a predetermined signal processing sampling rate, wherein the input signal is received at an input signal sampling rate, the method comprising the steps of computing a correlation or covariance function based on the received input signal at the input signal sampling rate to provide correlation or covariance coefficients at the input signal sampling rate, re-sampling the computed correlation or covariance coefficients having the input signal sampling rate to provide correlation or covariance coefficients at the predetermined signal processing sampling rate, and calculating the signal processing coefficients based on the correlation or covariance coefficients at the predetermined signal processing sampling rate.

Abstract translation: 一种用于以预定的信号处理采样率提供用于处理输入信号的信号处理系数的方法和装置，其中输入信号以输入信号采样率被接收，该方法包括以下步骤：基于 以输入信号采样率接收输入信号，以在输入信号采样率下提供相关或协方差系数，对具有输入信号采样率的计算的相关或协方差系数进行重新采样，以在预定信号处理采样率提供相关或协方差系数 ，并且基于在预定信号处理采样率下的相关或协方差系数来计算信号处理系数。

公开(公告)号：US20130304461A1

公开(公告)日：2013-11-14

申请号：US13940494

申请日：2013-07-12

Applicant: Huawei Technologies Co., Ltd.

Inventor： Anisse TALEB ,  David VIRETTE ,  Jianfeng XU

IPC: G10L21/0208

CPC classification number: G10L21/0208 ,  G10L21/02 ,  G10L25/69 ,  H04Q3/00

Abstract: A voice quality enhancement (VQE) detector for a network element receiving an audio signal from a previous network element of a network, wherein said voice quality enhancement detector is adapted: to perform a voice quality enhancement detection based on the received audio signal, wherein said voice quality enhancement detection comprises detecting that at least one voice quality enhancement function, VQEF, was applied to the received audio signal by at least one previous network element of the network; and to control a voice quality enhancement processing of the received audio signal depending on the detection result.

Abstract translation: 一种用于网络元件接收来自网络的先前网络元件的音频信号的语音质量增强（VQE）检测器，其中所述语音质量增强检测器适于：基于所接收的音频信号执行语音质量增强检测，其中所述 语音质量增强检测包括检测由网络的至少一个先前网络元件将至少一个语音质量增强功能VQEF应用于所接收的音频信号; 并且根据检测结果控制所接收的音频信号的语音质量增强处理。

公开(公告)号：US20130230176A1

公开(公告)日：2013-09-05

申请号：US13856579

申请日：2013-04-04

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： David VIRETTE ,  Yue LANG ,  Jianfeng XU

IPC: G10L19/008

CPC classification number: G10L19/008 ,  G10L25/06

Abstract: A method and apparatus for decoding a multichannel audio signal comprising the steps of receiving a downmix audio signal and an interchannel cross correlation parameter; deriving an interchannel phase difference parameter from the received interchannel cross correlation parameter; and calculating a decoded multichannel audio signal for the received downmix audio signal depending on the derived interchannel phase difference parameter.

Abstract translation: 一种用于对多声道音频信号进行解码的方法和装置，包括以下步骤：接收下混频音频信号和通道间相互作用参数; 从所接收的信道间相互关系参数中导出信道间相位差参数; 以及根据导出的通道间相位差参数来计算所接收的下混音频信号的解码多声道音频信号。