公开(公告)号：US09767811B2

公开(公告)日：2017-09-19

申请号：US13852554

申请日：2013-03-28

Applicant: Huawei Technologies Co., Ltd.

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

IPC: G10L19/008 ,  G10L21/0364

CPC classification number: G10L19/008 ,  G10L21/0364

Abstract: According to the invention, a device for post-processing 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 for receiving the at least one channel signal generated from the decoded downmix signal, a time envelope of the decoded downmix signal, an interchannel time difference between the channel signal and the downmix signal, and a classification indication indicating a transient type of the downmix signal; and a post-processor for post-processing 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 and the interchannel time difference.

公开(公告)号：US09514759B2

公开(公告)日：2016-12-06

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：US20150078606A1

公开(公告)日：2015-03-19

申请号：US14554298

申请日：2014-11-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Deming Zhang ,  David Virette ,  Yue Lang

IPC: H04R1/08

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：US20140140516A1

公开(公告)日：2014-05-22

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

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：US09699563B2

公开(公告)日：2017-07-04

申请号：US14820143

申请日：2015-08-06

Applicant: Huawei Technologies Co., Ltd.

Inventor： Christof Faller ,  David Virette ,  Yue Lang

IPC: H04R5/02 ,  H04R5/04 ,  H04S1/00 ,  H04S7/00

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 L and 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.

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：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：US20150264510A1

公开(公告)日：2015-09-17

申请号：US14725063

申请日：2015-05-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Wenyu Jin ,  Willem Bastiaan Kleijn ,  David Virette

IPC: H04S7/00

CPC classification number: H04S7/307 ,  H04S7/30 ,  H04S2400/11

Abstract: An audio rendering system is provided that comprises a plurality of loudspeakers arranged to approximate a desired spatial sound field within a predetermined reproduction region, wherein the loudspeakers are configured to approximate the sound field based on a weighted series of orthonormal basis functions for the reproduction region.

Abstract translation: 提供了一种音频再现系统，其包括布置成在预定再现区域内近似所需空间声场的多个扬声器，其中扬声器被配置为基于用于再现区域的加权的一系列正交基函数近似声场。

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：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。