公开(公告)号：US10178491B2

公开(公告)日：2019-01-08

申请号：US15411859

申请日：2017-01-20

Applicant: Huawei Technologies Co., Ltd.

Inventor： Christof Faller ,  Alexis Favrot ,  Liyun Pang ,  Peter Grosche ,  Yue Lang

IPC: H04R3/04 ,  H04S7/00 ,  H04S3/00

Abstract: The disclosure relates to an apparatus for manipulating an input audio signal associated to a spatial audio source within a spatial audio scenario, wherein the spatial audio source has a certain distance to a listener within the spatial audio scenario. The apparatus comprises an exciter adapted to manipulate the input audio signal to obtain an output audio signal, and a controller adapted to control parameters of the exciter for manipulating the input audio signal based on the certain distance.

公开(公告)号：US09985597B2

公开(公告)日：2018-05-29

申请号：US15082081

申请日：2016-03-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Peter Grosche ,  Yue Lang ,  Qing Zhang

IPC: H03G9/00 ,  H03G7/00 ,  H03G9/18

CPC classification number: H03G7/002 ,  H03G7/007 ,  H03G9/18

Abstract: A digital compressor for compressing an input audio signal is presented. The digital compressor comprises a compression gain control for providing a compression gain parameter, and a compression parameter determiner for determining a compression ratio from the compression gain parameter. The compression parameter determiner may be configured to weight the compression gain parameter by a predetermined weight factor to obtain the compression ratio. The digital compressor further comprises an auxiliary signal generator for manipulating the input audio signal in dependence of the compression ratio to obtain a first auxiliary signal, and a combiner unit for combining the first auxiliary signal with the compression gain parameter to obtain a second auxiliary signal, and for combining the input audio signal with the second auxiliary signal to obtain the compressed audio signal.

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：US20170078821A1

公开(公告)日：2017-03-16

申请号：US15362275

申请日：2016-11-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Christof Faller ,  Alexis Favrot ,  Yue Lang ,  Peter Grosche

IPC: H04S7/00 ,  H04S1/00

CPC classification number: H04S7/306 ,  H04S1/002 ,  H04S3/008 ,  H04S2420/01

Abstract: The disclosure is based on the finding that acoustic near-field transfer functions indicating acoustic near-field propagation channels between loudspeakers and ears of a listener can be employed to pre-process audio signals. Therefore, acoustic near-field distortions of the audio signals can be mitigated. The pre-processed audio signals can be presented to the listener using a wearable frame, wherein the wearable frame comprises the loudspeakers for audio presentation. The disclosure can allow for a high quality rendering of audio signals as well as a high listening comfort for the listener. The disclosure can provide the following advantages. By means of a loudspeaker selection as a function of a spatial audio source direction, cues related to the listener's ears can be generated, making the approach more robust with regard to front/back confusion. The approach can further be extended to an arbitrary number of loudspeaker pairs.

Abstract translation: 本公开是基于以下发现：可以采用指示收听者的扬声器和耳朵之间的声学​​近场传播信道的声学近场传递函数来预处理音频信号。 因此，可以减轻音频信号的声学近场失真。 预处理的音频信号可以使用可穿戴的框架呈现给收听者，其中可穿戴的框架包括用于音频呈现的扬声器。 本公开可以允许音频信号的高质量渲染以及听众的高听觉舒适度。 本公开可以提供以下优点。 通过扬声器选择作为空间音频源方向的功能，可以产生与听众耳朵相关的线索，使得该方法在前/后混淆方面更加健壮。 该方法可以进一步扩展到任意数量的扬声器对。

公开(公告)号：US09584944B2

公开(公告)日：2017-02-28

申请号：US15210644

申请日：2016-07-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： Wenhai Wu ,  Lei Miao ,  Yue Lang ,  Qi Zhang

IPC: H04R5/00 ,  G06F17/00 ,  H04S5/00 ,  G10L19/008

CPC classification number: H04S5/005 ,  G10L19/008 ,  H04S5/00 ,  H04S2420/01 ,  H04S2420/03

Abstract: A stereo decoding method and apparatus are disclosed. The method includes: restoring a monophonic signal from a received code stream through decoding; restoring an interchannel level difference, a group delay, and a group phase from the received code stream through decoding; and processing the monophonic signal according to the interchannel level difference, group delay, and group phase to obtain a first channel signal and a second channel signal. According to the stereo decoding method and apparatus provided in embodiments of the present invention, the first and second channel signals are obtained according to the monophonic signal, ILD, group delay, and group phase by referring to not only the ILD but also the group delay and group phase, thereby yielding favorable stereo sound field effect for the obtained first and second channel signals.

Abstract translation: 公开了一种立体声解码方法和装置。 该方法包括：通过解码从接收到的码流中恢复单声道信号; 通过解码从接收到的代码流中恢复通道间级差，组延迟和组相位; 以及根据通道间电平差，组延迟和组相位处理单声道信号以获得第一通道信号和第二通道信号。 根据本发明的实施例中提供的立体声解码方法和装置，不仅参照ILD而且还参照组延迟，根据单声道信号，ILD，组延迟和组相位来获得第一和第二声道信号 和组相位，从而为获得的第一和第二信道信号产生有利的立体声场效应。

公开(公告)号：US20160344356A1

公开(公告)日：2016-11-24

申请号：US15225553

申请日：2016-08-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Peter Grosche ,  Yue Lang ,  Qing Zhang

IPC: H03G3/00 ,  H04S7/00 ,  H03G11/00 ,  G10L19/26

CPC classification number: H03G3/002 ,  G10L19/26 ,  H03G7/002 ,  H03G7/007 ,  H03G11/008 ,  H04S7/307

Abstract: An audio compression system for compressing an input audio signal, and the audio compression system comprises a digital filter for filtering the input audio signal, where the digital filter comprises a frequency transfer function having a magnitude over frequency, where the magnitude is formed by an equal loudness curve of a human ear to obtain a filtered audio signal, and a compressor which is configured to compress the input audio signal upon the basis of the filtered audio signal to obtain a compressed audio signal.

Abstract translation: 一种用于压缩输入音频信号的音频压缩系统，并且音频压缩系统包括用于对输入音频信号进行滤波的数字滤波器，其中数字滤波器包括频率幅度超过频率的频率传递函数，其中幅度由等于 获得滤波后的音频信号的人耳的响度曲线;以及压缩器，被配置为基于经滤波的音频信号来压缩输入音频信号，以获得压缩音频信号。

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：US10805720B2

公开(公告)日：2020-10-13

申请号：US16435332

申请日：2019-06-07

Applicant: Huawei Technologies Co., Ltd. ,  University of Southampton

Inventor： Simone Fontana ,  Yue Lang ,  Filippo Fazi ,  Mincheol Shin ,  Ferdinando Oliveri

IPC: H04R1/40 ,  H04R5/02 ,  H04R3/12

Abstract: The disclosure relates to an audio signal processing apparatus for processing an input audio signal, comprising a filter unit comprising a plurality of filters, each filter configured to filter the input audio signal to obtain a plurality of filtered audio signals, each filter designed according to an extended mode matching beamforming applied to a surface of a half revolution, the surface partially characterizing a loudspeaker enclosure shape, a plurality of scaling units, each scaling unit configured to scale the plurality of filtered audio signals using a plurality of gain coefficients to obtain a plurality of scaled filtered audio signals, and a plurality of adders, each adder configured to combine the plurality of scaled filtered audio signals, thereby providing an output audio signal for producing a sound field having a beam directivity pattern defined by the plurality of gain coefficients.

公开(公告)号：US10313785B2

公开(公告)日：2019-06-04

申请号：US15940635

申请日：2018-03-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yue Lang ,  Wenyu Jin ,  Thomas Sherson ,  Richard Heusdens ,  Willem Bastiaan Kleijn

IPC: H04R3/00 ,  H04R1/40 ,  G10L21/0208 ,  G10L21/0216 ,  G10L21/0232

Abstract: A sound processing node for an arrangement of sound processing nodes is disclosed. The sound processing nodes being configured to receive a plurality of sound signals, wherein the sound processing node comprises a processor configured to determine a beamforming signal on the basis of the plurality of sound signals weighted by a plurality of weights, wherein the processor is configured to determine the plurality of weights using a transformed version of a linearly constrained minimum variance approach, the transformed version of the linearly constrained minimum variance approach being obtained by applying a convex relaxation to the linearly constrained minimum variance approach.