公开(公告)号：US09299359B2

公开(公告)日：2016-03-29

申请号：US13940494

申请日：2013-07-12

Applicant: Huawei Technologies Co., Ltd.

Inventor： Anisse Taleb ,  David Virette ,  Jianfeng Xu

IPC: G10L21/00 ,  H04M3/00 ,  G10L21/0208 ,  G10L21/02 ,  H04Q3/00 ,  G10L25/69

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, VQEE comprising of a noise cancellation or an echo cancellation function using a Gaussian Mixture Model 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至少一个语音质量增强功能，包括噪声消除的VQEE或使用高斯混合模型的回声消除功能被网络的至少一个先前网络元件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：US09275646B2

公开(公告)日：2016-03-01

申请号：US14145432

申请日：2013-12-31

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yue Lang ,  David Virette ,  Jianfeng Xu

IPC: G10L19/00 ,  G10L21/00 ,  G10L19/008 ,  H04S3/00

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

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

Abstract translation: 提供了用于低复杂信道间差分估计的方法和装置。 一种用于估计信道间差异（ICD）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，在多个音频信道中的至少一个之间计算ICD的多个ICD值 在预定频率范围内的音频通道信号和参考音频通道信号，每个ICD值在预定频率范围的一部分上被计算，对于多个ICD值中的每一个计算加权ICD值， 具有对应的频率相关加权因子的多个ICD值，并通过加上多个加权的ICD值来计算预定频率范围的ICD范围值。

公开(公告)号：US20160044432A1

公开(公告)日：2016-02-11

申请号：US14921588

申请日：2015-10-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Peter Grosche ,  David Virette

IPC: H04S1/00 ,  H04S7/00

CPC classification number: H04S1/005 ,  H04S3/004 ,  H04S7/308 ,  H04S2420/01 ,  H04S2420/03

Abstract: The invention relates to an audio signal processing apparatus for processing an audio signal, the audio signal processing apparatus comprising: a converter configured to convert a stereo audio signal into a binaural audio signal; and a determiner configured to determine upon the basis of an indicator signal whether the audio signal is a stereo audio signal or a binaural audio signal, the indicator signal indicating whether the audio signal is a stereo audio signal or a binaural audio signal, the determiner being further configured to provide the audio signal to the converter if the audio signal is a stereo audio signal.

Abstract translation: 本发明涉及一种用于处理音频信号的音频信号处理装置，该音频信号处理装置包括：转换器，被配置为将立体声音频信号转换为双耳音频信号; 以及确定器，被配置为基于指示符信号来确定音频信号是立体声音频信号还是双耳音频信号，指示信号指示音频信号是立体声音频信号还是双耳音频信号，确定器是 进一步被配置为如果音频信号是立体声音频信号，则将音频信号提供给转换器。

公开(公告)号：US20160037260A1

公开(公告)日：2016-02-04

申请号：US14820143

申请日：2015-08-06

Applicant: Huawei Technologies Co., Ltd.

Inventor： Christof Faller ,  David Virette ,  Yue Lang

IPC: H04R5/04 ,  H04S7/00 ,  H04S1/00

CPC classification number: H04R5/04 ,  H04R2205/021 ,  H04R2499/11 ,  H04S1/007 ,  H04S7/303 ,  H04S2420/03

Abstract: The invention relates to a method for rendering a stereo audio signal over a first loudspeaker and a second loudspeaker with respect to a desired direction, the stereo audio signal comprising a first audio signal component (L) and a second audio signal component (R), the method comprising: providing a first rendering signal based on a combination of Land a first difference signal obtained based on a difference between L and R to the first loudspeaker, and providing a second rendering signal based on a combination of R and a second difference signal obtained based on the difference between L and R to the second loudspeaker, such that both difference signals are different with respect to sign and one difference signal is delayed by a delay compared to the other difference signal to define a dipole signal, wherein the delay is adapted according to the desired direction.

Abstract translation: 本发明涉及一种用于相对于期望方向在第一扬声器和第二扬声器上渲染立体声音频信号的方法，所述立体声音频信号包括第一音频信号分量（L）和第二音频信号分量（R） 该方法包括：基于Land的组合，将基于L和R之间的差值获得的第一差分信号提供给第一扬声器，并且基于R和第二差分信号的组合提供第二渲染信号 基于与第二扬声器的L和R之间的差异获得，使得两个差分信号相对于符号是不同的，并且一个差分信号与另一个差分信号相比延迟了一个延迟，以限定偶极子信号，其中延迟是 根据所需的方向进行调整。

公开(公告)号：US09247334B2

公开(公告)日：2016-01-26

申请号：US14554298

申请日：2014-11-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Deming Zhang ,  David Virette ,  Yue Lang

IPC: H04R21/02 ,  H04R1/08 ,  H04M1/03 ,  H04R5/027 ,  H04M1/02

CPC classification number: H04R1/08 ,  H04M1/0202 ,  H04M1/035 ,  H04R5/027 ,  H04R2499/11

Abstract: The invention relates to a portable electronic device, comprising: a housing comprising at least one hole; and at least two directional microphones mounted in the housing and placed coincidentally for stereo sound pickup, each one of the microphones defining a main sound axis and each one of the two directional microphones defining a direct sound direction and a opposite sound direction which describe opposite directions of the main sound axis, wherein the at least one hole is a common hole shared between the at least two directional microphones such that the main sound axis of the at least two directional microphones are pointing through the common hole in different directions.

Abstract translation: 本发明涉及一种便携式电子设备，包括：壳体，包括至少一个孔; 以及安装在壳体中的至少两个定向麦克风并且巧妙地放置用于立体声拾音，每个麦克风限定主声轴，并且两个定向麦克风中的每一个定义了直接声音方向和相反方向，其描述了相反的方向 的主声轴，其中所述至少一个孔是在所述至少两个定向麦克风之间共享的公共孔，使得所述至少两个定向麦克风的主声轴在不同方向上指向所述公共孔。

公开(公告)号：US20140257824A1

公开(公告)日：2014-09-11

申请号：US14285976

申请日：2014-05-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Anisse Taleb ,  Jianfeng Xu ,  David Virette

IPC: G10L19/00

CPC classification number: G10L19/00 ,  G10L19/025 ,  G10L19/20

Abstract: An apparatus and a method for encoding an input signal applied to the apparatus comprising: a transient detector adapted to detect whether the applied input signal comprises a transient; at least two transient signal encoders adapted to encode the applied input signal if a transient is detected by the transient detector; and a selection unit adapted to select a transient signal encoder among the transient signal encoders according to at least one predetermined selection criterion.

Abstract translation: 一种用于编码施加到该装置的输入信号的装置和方法，包括：瞬态检测器，适于检测所施加的输入信号是否包括瞬态; 至少两个瞬态信号编码器，其适于在瞬态检测器检测到瞬态时对所施加的输入信号进行编码; 以及选择单元，其适于根据至少一个预定选择标准在所述瞬态信号编码器中选择瞬态信号编码器。

公开(公告)号：US20130236022A1

公开(公告)日：2013-09-12

申请号：US13850655

申请日：2013-03-26

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： David Virette ,  Yue Lang ,  Lei Miao ,  Wenhai Wu

IPC: G10L19/008

CPC classification number: G10L19/008 ,  G10L19/025 ,  G10L21/0364

Abstract: According to the invention, a device (101, 101′) for postprocessing at least one channel signal of a plurality of channel signals of a multi-channel signal is described, the at least one channel signal being generated from a decoded downmix signal by a low-bit-rate audio coding/decoding system, the device comprising: a receiver (103; 103′) for receiving the at least one channel signal generated from the decoded downmix signal, a time envelope of the decoded downmix signal and a classification indication indicating a transient type of the at least one channel signal, wherein the classification indication is associated to the at least one channel signal, and a postprocessor (105; 105′) for postprocessing the at least one channel signal based on the time envelope of the decoded downmix signal weighted by a respective weighting factor and in dependence on the classification indication.

Abstract translation: 根据本发明，描述了用于后处理多信道信号的多个信道信号的至少一个信道信号的装置（101,101'），所述至少一个信道信号是通过解码的下混合信号由 低比特率音频编码/解码系统，该装置包括：接收机（103; 103'），用于接收从解码缩混信号产生的至少一个信道信号，解码缩混信号的时间包络和分类指示 指示所述至少一个信道信号的瞬时类型，其中所述分类指示与所述至少一个信道信号相关联;以及后处理器（105; 105'），用于基于所述至少一个信道信号的时间包络来后处理所述至少一个信道信号 解码的下混合信号由相应的加权因子加权并且依赖于分类指示。

公开(公告)号：US09536538B2

公开(公告)日：2017-01-03

申请号：US14716289

申请日：2015-05-19

Applicant: Huawei Technologies Co., Ltd.

Inventor： Cyril Joder ,  Felix Weninger ,  Bjoern Schuller ,  David Virette

IPC: G10L21/0208 ,  G10L21/0216 ,  G10L21/0232

CPC classification number: G10L21/0208 ,  G10L21/0216 ,  G10L21/0232

Abstract: A method for reconstructing at least one target signal comprises determining a first set of feature vectors from the input signal, the first set of feature vectors forming a non-negative input matrix; determining a second set of feature vectors, the second set of feature vectors forming a non-negative noise matrix; decomposing the input matrix into a sum of a first matrix and a second matrix, the first matrix representing a product of a non-negative bases matrix and a non-negative weight matrix, and the second matrix representing a combination of the noise matrix and a noise weight vector; and reconstructing the at least one target signal based on the non-negative bases matrix and the non-negative weight matrix.

Abstract translation: 一种用于重构至少一个目标信号的方法包括从所述输入信号确定第一组特征向量，所述第一组特征向量形成非负输入矩阵; 确定第二组特征向量，所述第二组特征向量形成非负噪声矩阵; 将输入矩阵分解为第一矩阵和第二矩阵的和，第一矩阵表示非负基数矩阵和非负权重矩阵的乘积，第二矩阵表示噪声矩阵和 噪声权重向量; 以及基于所述非负基数矩阵和所述非负权重矩阵来重构所述至少一个目标信号。

公开(公告)号：US09521500B2

公开(公告)日：2016-12-13

申请号：US14554277

申请日：2014-11-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Deming Zhang ,  David Virette ,  Yue Lang

IPC: H04K1/00 ,  H04S1/00 ,  H04M1/03 ,  H04R5/027 ,  H04M1/02

CPC classification number: H04S1/00 ,  H04M1/0202 ,  H04M1/035 ,  H04M2250/12 ,  H04R5/027 ,  H04R2499/11

Abstract: The invention relates to a portable electronic device, comprising: at least two directional microphones for stereo sound pickup, each one of the two directional microphones defining a direct sound direction and an opposite sound direction towards which the directional microphones are directed; and a housing comprising for each of the directional microphones a first hole and a second hole, the first hole being located at a different side of the portable electronic device than the second hole.

Abstract translation: 本发明涉及一种便携式电子设备，包括：用于立体声拾音的至少两个定向麦克风，两个定向麦克风中的每一个定义了定向麦克风指向的直接声音方向和相反的声音方向; 以及壳体，其包括用于每个所述定向麦克风的第一孔和第二孔，所述第一孔位于所述便携式电子设备的不同于所述第二孔的不同侧。

公开(公告)号：US09516447B2

公开(公告)日：2016-12-06

申请号：US14227695

申请日：2014-03-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Wenhai Wu ,  Lei Miao ,  Yue Lang ,  David Virette

IPC: H04S5/02 ,  H04S3/00 ,  H04S3/02 ,  G10L19/008 ,  G10L19/02

CPC classification number: H04S3/02 ,  G10L19/008 ,  G10L19/02

Abstract: An embodiment of the present invention provides a method for generating a downmixed signal, including: performing a time-frequency transform on a received left sound channel signal and a received right sound channel signal to obtain a frequency domain signal, and dividing the frequency domain signal into several frequency bands; calculating a sound channel energy ratio and a sound channel phase difference of each frequency band; calculating a phase difference between the downmixed signal and a first sound channel signal in each frequency band according to the sound channel energy ratio and the sound channel phase difference; and calculating a frequency domain downmixed signal according to the left sound channel signal, the right sound channel signal, and the phase difference between the downmixed signal and the first sound channel signal in each frequency band. This method effectively improves quality of stereo encoding and decoding.

Abstract translation: 本发明的实施例提供了一种用于产生下混合信号的方法，包括：对接收到的左声道信号和接收到的右声道信号执行时频变换以获得频域信号，并且将频域信号 进入几个频带; 计算每个频带的声道能量比和声道相位差; 根据声道能量比和声道相位差计算每个频带中的下混合信号与第一声道信号之间的相位差; 以及根据左声道信号，右声道信号以及每个频带中的下混合信号和第一声道信号之间的相位差来计算频域缩混信号。 该方法有效提高立体声编码和解码质量。