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公开(公告)号：US10284993B2
公开(公告)日：2019-05-07
申请号：US15722637
申请日：2017-10-02
Inventor： Michael Buerger , Heinrich Löllmann , Walter Kellermann , Karim Helwani , Peter Grosche , Yue Lang
Abstract: A local wave field synthesis apparatus, which includes a determination module for determining desired sound pressures and desired particle velocity vectors at a plurality of control points, a computation module for computing sound pressures and particle velocity vectors at the plurality of control points based on a set of filter parameters, an optimization module for computing an optimum set of filter parameters by jointly optimizing computed sound pressures towards the desired sound pressures and computed particle velocity vectors towards the desired particle velocity vectors, and a generator module for generating the drive signals based on the optimum set of filter parameters, wherein the plurality of control points are located on one or more contours around the one or more audio zones.
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公开(公告)号：US10154345B2
公开(公告)日：2018-12-11
申请号：US15626962
申请日：2017-06-19
Applicant: Huawei Technologies Co., Ltd.
Inventor： Christof Faller , Alexis Favrot , Peter Grosche , Yue Lang
Abstract: A microphone arrangement and a method using the microphone arrangement for recording surround sound in a mobile device, where the microphone arrangement comprises a first and a second microphone and arranged at a first distance to each other and configured to obtain a stereo signal, and comprises a third microphone configured to obtain a steering signal together with at least one of the first and second microphone or with a fourth microphone. The microphone arrangement also comprises a processor configured to separate the stereo signal into a front stereo signal and a back stereo signal based on the steering signal.
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公开(公告)号：US09961474B2
公开(公告)日：2018-05-01
申请号：US15362275
申请日：2016-11-28
Applicant: Huawei Technologies Co., Ltd.
Inventor： Christof Faller , Alexis Favrot , Yue Lang , Peter Grosche
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.
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公开(公告)号：US09949053B2
公开(公告)日：2018-04-17
申请号：US15142024
申请日：2016-04-29
Applicant: Huawei Technologies Co., Ltd.
Inventor： Peter Grosche , Yue Lang
CPC classification number: H04S7/30 , H04S1/002 , H04S1/005 , H04S3/002 , H04S3/004 , H04S2400/01 , H04S2400/03 , H04S2400/05 , H04S2420/01
Abstract: A method for processing an audio signal includes: decomposing an audio signal comprising spatial information into a set of audio signal components; and processing a first subset of the set of audio signal components according to a first processing scheme and processing a second subset of the set of audio signal components according to a second processing scheme different from the first processing scheme, wherein the first subset comprises audio signal components corresponding to at least one frontal signal source and the second subset comprises audio signal components corresponding to at least one ambient signal source; and wherein the second processing scheme is based on crosstalk cancellation.
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公开(公告)号：US09838825B2
公开(公告)日：2017-12-05
申请号：US15343709
申请日：2016-11-04
Applicant: Huawei Technologies Co., Ltd.
Inventor： Karim Helwani , Peter Grosche , Yue Lang
CPC classification number: H04S7/303 , G06F3/012 , H04R5/02 , H04R5/04 , H04R2499/11 , H04S3/00 , H04S3/008 , H04S5/005 , H04S7/00 , H04S7/30 , H04S7/305 , H04S2400/01 , H04S2420/01
Abstract: An audio signal processing device for generating a plurality of output signals for a plurality of loudspeakers from an input audio signal comprises a driving function determining unit adapted to determined driving functions of a plurality of loudspeakers for generating a virtual left binaural signal source and a virtual right binaural signal source based upon a position and a directivity of the virtual left binaural signal source, a position and a directivity of the virtual right binaural signal source and positions of the plurality of loudspeakers. Moreover, it comprises a filtering unit adapted to filter a left binaural signal and a right binaural signal using the driving functions of the plurality of loudspeakers resulting in the plurality of output signals. The left binaural signal and the right binaural signal constitute the input audio signal or are derived there from.
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Patent Agency Ranking
46.发明申请公开(公告)号：US20160286329A1
公开(公告)日：2016-09-29
申请号：US15177994
申请日：2016-06-09
Applicant: Huawei Technologies Co., Ltd.
Inventor： Peter Grosche , Yue Lang
CPC classification number: H04S1/007 , H04R5/02 , H04R5/04 , H04R2203/12 , H04R2499/11 , H04R2499/15 , H04S1/002 , H04S2420/01 , H04S2420/07
Abstract: An apparatus and a method for enhancing a spatial perception of an audio signal are provided creating increased interaural-level differences. To obtain this effect, two dipoles are used: one for producing a left audio signal and one for producing a right audio signal.
Abstract translation: 提供了用于增强音频信号的空间感知的装置和方法，其产生增加的心律间水平差异。 为了获得这种效果，使用两个偶极子：一个用于产生左音频信号，一个用于产生正确的音频信号。
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47.发明授权Multi-channel audio encoder and method for encoding a multi-channel audio signal 有权多声道音频编码器和多声道音频信号编码方法公开(公告)号：US09449603B2
公开(公告)日：2016-09-20
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 , G10L19/02
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。
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公开(公告)号：US20160249151A1
公开(公告)日：2016-08-25
申请号：US15142024
申请日：2016-04-29
Applicant: Huawei Technologies Co., Ltd.
Inventor： Peter Grosche , Yue Lang
CPC classification number: H04S7/30 , H04S1/002 , H04S1/005 , H04S3/002 , H04S3/004 , H04S2400/01 , H04S2400/03 , H04S2400/05 , H04S2420/01
Abstract: A method for processing an audio signal includes: decomposing an audio signal comprising spatial information into a set of audio signal components; and processing a first subset of the set of audio signal components according to a first processing scheme and processing a second subset of the set of audio signal components according to a second processing scheme different from the first processing scheme, wherein the first subset comprises audio signal components corresponding to at least one frontal signal source and the second subset comprises audio signal components corresponding to at least one ambient signal source; and wherein the second processing scheme is based on crosstalk cancellation.
Abstract translation: 一种用于处理音频信号的方法包括：将包括空间信息的音频信号分解成一组音频信号分量; 以及根据第一处理方案处理所述一组音频信号分量的第一子集，并且根据不同于所述第一处理方案的第二处理方案处理所述一组音频信号分量的第二子集，其中所述第一子集包括音频信号 对应于至少一个正面信号源和第二子集的部件包括对应于至少一个环境信号源的音频信号分量; 并且其中所述第二处理方案基于串扰消除。
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公开(公告)号：US20160211821A1
公开(公告)日：2016-07-21
申请号：US15082081
申请日：2016-03-28
Applicant: Huawei Technologies Co., Ltd.
Inventor： Peter Grosche , Yue Lang , Qing Zhang
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.
Abstract translation: 提出了一种用于压缩输入音频信号的数字压缩器。 数字压缩机包括用于提供压缩增益参数的压缩增益控制和用于根据压缩增益参数确定压缩比的压缩参数确定器。 压缩参数确定器可以被配置为将压缩增益参数加权预定的权重因子以获得压缩比。 数字压缩器还包括辅助信号发生器，用于根据压缩比来操纵输入音频信号以获得第一辅助信号;以及组合器单元，用于将第一辅助信号与压缩增益参数组合以获得第二辅助信号， 并且用于将输入音频信号与第二辅助信号组合以获得压缩音频信号。
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50.发明授权Method for inter-channel difference estimation and spatial audio coding device 有权信道间差分估计和空间音频编码装置的方法公开(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。
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