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1.发明申请Signal Processing Apparatus, Method and Computer Program for Dereverberating a Number of Input Audio Signals 有权用于对多个输入音频信号进行混频的信号处理装置，方法和计算机程序公开(公告)号：US20160365100A1
公开(公告)日：2016-12-15
申请号：US15248597
申请日：2016-08-26
Applicant: Huawei Technologies Co., Ltd.
Inventor： Karim Helwani , Liyun Pang
IPC: G10L21/0232 , G10L19/008
CPC classification number: G10L21/0232 , G10L19/008 , G10L21/0208 , G10L2021/02082
Abstract: A signal processing apparatus for dereverberating a number of input audio signals, where the signal processing apparatus includes a processor configured to transform the number of input audio signals into a transformed domain to obtain input transformed coefficients, the input transformed coefficients being arranged to form an input transformed coefficient matrix, determine filter coefficients upon the basis of eigenvalues of a signal space, the filter coefficients being arranged to form a filter coefficient matrix, convolve input transformed coefficients of the input transformed coefficient matrix by filter coefficients of the filter coefficient matrix to obtain output transformed coefficients, and the output transformed coefficients being arranged to form an output transformed coefficient matrix.
Abstract translation: 一种用于对多个输入音频信号进行去混响的信号处理装置，其中所述信号处理装置包括被配置为将输入音频信号的数量变换为变换域以获得输入变换的系数的处理器，所述输入变换系数被布置成形成输入 变换系数矩阵，基于信号空间的特征值确定滤波器系数，滤波器系数被布置成形成滤波器系数矩阵，通过滤波器系数矩阵的滤波器系数来卷积输入变换系数矩阵的输入变换系数，以获得输出 变换后的系数被布置成形成输出变换系数矩阵。
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公开(公告)号：US10679642B2
公开(公告)日：2020-06-09
申请号：US16013650
申请日：2018-06-20
Applicant: Huawei Technologies Co., Ltd. , UNIVERSITY OF CAMBRIDGE
Inventor： Milos Markovic , Karim Helwani , Herbert Buchner , Simon Godsill
IPC: G10L21/0308 , G10L21/0272 , G10L17/00 , G10L21/0216
Abstract: A signal processing apparatus and method are provided for separating a plurality of mixture signals from a MIMO system to iteratively obtain a plurality of output signals. The plurality of mixture signals are a response of the MIMO system to a plurality of source signals. The signal processing apparatus comprises a plurality of blind source separators including a first blind source separator based on a first blind source separation technique or algorithm and a second blind source separator based on a second blind source separation technique or algorithm, wherein the first blind source separator is configured to compute a first plurality of preliminary output signals on the basis of a first set of coefficients describing the MIMO system and wherein the second blind source separator is configured to compute a second plurality of preliminary output signals on the basis of a second set of coefficients describing the MIMO system.
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公开(公告)号：US10602267B2
公开(公告)日：2020-03-24
申请号：US15978688
申请日：2018-05-14
Applicant: Huawei Technologies Co., Ltd.
Inventor： Peter Grosche , Karim Helwani , Christian Schörkhuber , Franz Zotter , Robert Höldrich , Matthias Frank
Abstract: A sound signal processing apparatus including a plurality of microphones, where each microphone is configured to receive the sound signal from the target source, a processor configured to estimate a first power measure on the basis of the sound signal from the target source received by a first microphone of the microphones and a second power measure on the basis of the sound signal from the target source received by at least a second microphone of the microphones, which is located more distant from the target source than the first microphone, and the processor is further configured to determine a gain factor on the basis of a ratio between the second power measure and the first power measure, and an amplifier configured to apply the gain factor to the sound signal from the target source received by the first microphone.
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公开(公告)号：US10600426B2
公开(公告)日：2020-03-24
申请号：US15797007
申请日：2017-10-30
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Panji Setiawan , Karim Helwani
IPC: G10L19/008 , H04S3/00
Abstract: The invention relates to audio signal processing apparatuses and methods, such as an audio signal downmixing apparatus (105) for processing an input audio signal comprising a plurality of input channels (113) into an output audio signal comprising a plurality of primary output channels (123) and at least one auxiliary output channel (125) using a downmix matrix D, wherein the downmix matrix D comprises a primary downmix matrix DU providing the plurality of primary output channels (123) and an auxiliary downmix matrix DW providing the at least one auxiliary output channel (125). The audio signal downmixing apparatus (105) comprises an auxiliary downmix matrix determiner (107) configured to determine the auxiliary downmix matrix DW, and a processor (109) configured to process the input audio signal into the output audio signal using the downmix matrix D.
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公开(公告)号：US10482889B2
公开(公告)日：2019-11-19
申请号：US15797007
申请日：2017-10-30
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Panji Setiawan , Karim Helwani
IPC: G10L19/008 , H04S3/00
Abstract: The invention relates to audio signal processing apparatuses and methods, such as an audio signal downmixing apparatus (105) for processing an input audio signal comprising a plurality of input channels (113) into an output audio signal comprising a plurality of primary output channels (123) and at least one auxiliary output channel (125) using a downmix matrix D, wherein the downmix matrix D comprises a primary downmix matrix DU providing the plurality of primary output channels (123) and an auxiliary downmix matrix DW providing the at least one auxiliary output channel (125). The audio signal downmixing apparatus (105) comprises an auxiliary downmix matrix determiner (107) configured to determine the auxiliary downmix matrix DW, and a processor (109) configured to process the input audio signal into the output audio signal using the downmix matrix D.
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Patent Agency Ranking
公开(公告)号：US20180262832A1
公开(公告)日：2018-09-13
申请号：US15978688
申请日：2018-05-14
Applicant: Huawei Technologies Co., Ltd.
Inventor： Peter Grosche , Karim Helwani , Christian Schörkhuber , Franz Zotter , Robert Höldrich , Matthias Frank
CPC classification number: H04R3/005 , G10L25/21 , H03G3/20 , H03G3/3005 , H04R1/406 , H04R3/04 , H04R2430/01
Abstract: A sound signal processing apparatus including a plurality of microphones, where each microphone is configured to receive the sound signal from the target source, a processor configured to estimate a first power measure on the basis of the sound signal from the target source received by a first microphone of the microphones and a second power measure on the basis of the sound signal from the target source received by at least a second microphone of the microphones, which is located more distant from the target source than the first microphone, and the processor is further configured to determine a gain factor on the basis of a ratio between the second power measure and the first power measure, and an amplifier configured to apply the gain factor to the sound signal from the target source received by the first microphone.
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7.发明申请Apparatus and Method for Compressing a Set of N Binaural Room Impulse Responses 审中-公开压缩一组N双耳室冲击响应的装置和方法公开(公告)号：US20160212564A1
公开(公告)日：2016-07-21
申请号：US15082087
申请日：2016-03-28
Applicant: Huawei Technologies Co., Ltd.
Inventor： Simone Fontana , Karim Helwani , Peter Grosche
IPC: H04S7/00 , G10L19/008
CPC classification number: H04S7/306 , G10L19/008 , H04S3/004 , H04S2400/01 , H04S2400/03 , H04S2420/01 , H04S2420/07
Abstract: An apparatus and a method for compressing a set of N binaural room impulse responses, BRIR, wherein each channel of an N channel audio signal is convolved with the corresponding compressed set of N BRIR. The apparatus may comprise at least one analyzing and compressor module adapted to separate an input binaural room impulse response signal into a first binaural signal set provided to the binauralization processing of the initial part of the BRIR (early part) and a second binaural signal set provided to the binauralization processing of the final part of the BRIR (late part) via a downmix module; a binauralization module adapted to obtain a binaural signal based on convolving the N channel audio signal with the first binaural signal set and the second binaural signal set.
Abstract translation: 一种用于压缩一组N个双耳室脉冲响应BRIR的装置和方法，其中N个声道音频信号的每个声道与N个BRIR的对应压缩集进行卷积。 该装置可以包括至少一个分析和压缩器模块，其适于将输入的双耳室脉冲响应信号分离成提供给BRIR的初始部分（早期部分）的双耳化处理的第一双耳信号组和提供的第二双耳信号组 通过下混模块对BRIR（后期部分）最后部分的双耳化处理; 一种双耳化模块，其适于基于将N声道音频信号与第一双耳信号组和第二双耳信号集合进行卷积来获得双耳信号。
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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：US10224043B2
公开(公告)日：2019-03-05
申请号：US15714465
申请日：2017-09-25
Applicant: Huawei Technologies Co., Ltd.
Inventor： Panji Setiawan , Karim Helwani
IPC: G10L19/008 , H04S3/00
Abstract: Audio signal processing apparatuses and methods are provided, such as an audio signal downmixing apparatus for processing an input audio signal into an output audio signal, wherein the input audio signal comprises a plurality of input channels recorded at a plurality of spatial positions and the output audio signal comprises a plurality of primary output channels. The audio signal downmixing apparatus comprises a downmix matrix determiner configured to determine for each frequency bin j of a plurality of frequency bins a downmix matrix DU with j being an integer in the range from 1 to N, and a processor configured to process the input audio signal using the downmix matrix DU into the output audio signal.
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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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