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公开(公告)号：US20190306650A1
公开(公告)日：2019-10-03
申请号：US16409368
申请日：2019-05-10
Applicant: Huawei Technologies Co., Ltd.
Inventor： Wenyu JIN , Peter GROSCHE
Abstract: A signal generator has a filter bank that provides weighted versions of audio signals to speakers. The weights were derived by identifying a first constraint that limits a weight that can be applied to an audio signal to be provided to a first speaker. A characteristic of a second speaker that affects how a user will perceive audio signals output by that speaker relative to audio signals output by the first speaker was also determined. A second constraint was determined based on the determined characteristic and the first constraint. The weights were then determined so as to minimize a difference between an actual balance of each signal that is expected to be heard by a user and a target balance. The signal generator can achieve sweet spot correction and sound stage widening simultaneously. It also achieves a balanced sound stage, particularly when the speakers are asymmetric.
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公开(公告)号：US20190253826A1
公开(公告)日：2019-08-15
申请号：US16393602
申请日：2019-04-24
Applicant: Huawei Technologies Co., Ltd.
Inventor： Peter GROSCHE , Franz ZOTTER , Christian SCHÖRKHUBER , Matthias FRANK , Robert HÖLDRICH
CPC classification number: H04S7/303 , G10L19/008 , H04R1/403 , H04R1/406 , H04R3/005 , H04R3/12 , H04R5/02 , H04R5/04 , H04R2430/01 , H04S3/008 , H04S7/30 , H04S7/302 , H04S7/304 , H04S2400/01 , H04S2400/15
Abstract: A method for acoustic scene playback is described, which comprises: providing recording data comprising microphone signals of microphone setups positioned within an acoustic scene and microphone metadata of the microphone setups, each of the microphone setups has a recording spot which is a center position of the respective microphone setup; specifying a virtual listening position within the acoustic scene; assigning each microphone setup Virtual Loudspeaker Objects, VLOs, wherein each VLO is an abstract sound output object within a virtual free field; generating an encoded data stream based on the recording data, the virtual listening position and VLO parameters of the VLOs assigned to the microphone setups; and decoding the encoded data stream based on a playback setup, thereby generating a decoded data stream; and feeding the decoded data stream to a rendering device, thereby driving the rendering device to reproduce sound of the acoustic scene at the virtual listening position.
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3.发明申请公开(公告)号：US20170154636A1
公开(公告)日：2017-06-01
申请号：US15428723
申请日：2017-02-09
Applicant: Huawei Technologies Co., Ltd.
Inventor： Juergen GEIGER , Peter GROSCHE
IPC: G10L21/0316 , H04S5/00 , H04S3/00 , G10L21/0272
CPC classification number: G10L21/0316 , G10L21/0272 , H04S3/008 , H04S5/00
Abstract: A signal processing apparatus for enhancing a voice component within a multi-channel audio signal comprising a left channel audio signal, a center channel audio signal, and a right channel audio signal, the signal processing apparatus comprising a filter and a combiner; wherein the filter is configured to determine an overall magnitude of the multi-channel audio signal over frequency based on the multi-channel audio signal, to obtain a gain function based on a ratio between a magnitude of the center channel audio signal and the overall magnitude of the multi-channel audio signal, and to weight the left channel audio signal, the center channel audio signal, and the right channel audio signal by the gain function; and wherein the combiner is configured to combine individually the left channel audio signal, the center channel audio signal, and the right channel audio signal with the weighted right channel audio signal.
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公开(公告)号：US20180027350A1
公开(公告)日：2018-01-25
申请号：US15722637
申请日：2017-10-02
Inventor： Michael BUERGER , Heinrich LÖLLMANN , Walter KELLERMANN , Karim HELWANI , Peter GROSCHE , Yue LANG
CPC classification number: H04S7/302 , H04R5/02 , H04R2201/403 , H04R2499/13 , H04S7/30 , H04S7/301 , H04S2420/13
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：US20170134877A1
公开(公告)日：2017-05-11
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
CPC classification number: H04S7/302 , H04R3/04 , H04S3/008 , H04S2400/01 , H04S2400/11 , H04S2420/01 , H04S2420/03
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.
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Patent Agency Ranking
公开(公告)号：US20200057132A1
公开(公告)日：2020-02-20
申请号：US16664373
申请日：2019-10-25
Applicant: Huawei Technologies Co., Ltd.
Inventor： Kainan CHEN , Jürgen GEIGER , Mohammad TAGHIZADEH , Peter GROSCHE
Abstract: A device for estimating Direction of Arrival (DOA) of sound from Q≥1 sound sources is provided. The device is configured to obtain a phase difference matrix, which includes measured phase difference values, each of the measured phase difference values being a measured value of a phase difference between two microphone units for a frequency bin in a range of frequencies of the sound. The device is further configured to generate a replicated phase difference matrix by replicating the measured phase difference values to other potential sinusoidal periods, calculate a DOA value for each phase difference value in the replicated phase difference matrix, and determine, as Q DOA results, the Q most prominent peak values in a histogram generated based on the calculated DOA values.
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公开(公告)号：US20180098175A1
公开(公告)日：2018-04-05
申请号：US15786278
申请日：2017-10-17
Inventor： Michael BUERGER , Heinrich LÖLLMANN , Walter KELLERMANN , Peter GROSCHE , Yue LANG
IPC: H04S7/00
CPC classification number: H04S7/303 , H04R3/12 , H04S7/30 , H04S2400/11 , H04S2420/01 , H04S2420/13
Abstract: A wave field synthesis apparatus for driving an array of loudspeakers with drive signals, the apparatus includes a sound field synthesizer for generating sound field drive signals for causing the array of loudspeakers to generate one or more sound fields at one or more audio zones, a binaural renderer for generating binaural drive signals for causing the array of loud-speakers to generate specified sound pressures at at least two positions, wherein the at least two positions are determined based on a detected position and/or orientation of a listener, and a decision unit for deciding whether to generate the drive signals using the sound field synthesizer or using the binaural renderer.
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公开(公告)号：US20220322021A1
公开(公告)日：2022-10-06
申请号：US17845616
申请日：2022-06-21
Applicant: Huawei Technologies Co., Ltd.
Inventor： Simone FONTANA , Jiang LI , Peter GROSCHE
Abstract: The present disclosure relates to an audio device (900) for providing an improved three-dimensional sound experience by means of the generated soundfield. To achieve this, the audio device (900) comprises a housing (901), which has an elliptical torus shape and a plurality of loudspeakers (903a-903h), and a processing circuitry (1310). The processing circuitry is configured to process a plurality of input signals (L, R, UL, UR) in a manner, which enables the plurality of loudspeakers (903a-903h) to form at least a first (DH1, DH3) and second (DH2) horizontal dipoles for crosstalk cancellation within at least two different frequency ranges (HF, MF), and to form at least a first vertical dipole (DV1, DV3) for sound elevation (1204a, 1204b) of the soundfield. Hereby, the desired frequency ranges (HF, MF) may be adjusted using an appropriated distance of the plurality of loudspeakers (903a-903h).
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公开(公告)号：US20190098407A1
公开(公告)日：2019-03-28
申请号：US16197696
申请日：2018-11-21
Applicant: Huawei Technologies Co., Ltd.
Inventor： Christof FALLER , Alexis FAVROT , Peter GROSCHE , Martin POLLOW , Jürgen GEIGER
IPC: H04R3/04
CPC classification number: H04R3/04 , H04R3/007 , H04R2430/03 , H04S2400/09
Abstract: An input audio signal (101) is separated into input audio signal components (X(k,b)). A set of two or more band branches (105e) provides output audio signal components (Y(k,b)). The set of band branches (105e) comprises one or more compressor branches Each compressor branch compresses a respective input audio signal component (X(k,b)) into a respective output audio signal component (Y(k,b)). A summed audio signal (y(t)) is generated by summing the output audio signal components (Y(k,b)). A residual audio signal (v(t)) is a difference between the input audio signal (101) and the summed audio signal (y(t)) A virtual bass signal (w(t)) comprises one or more harmonics of the residual audio signal (v(t)). An output audio signal (103) is generated by summing the summed audio signal (y(t)) and the virtual bass signal (w(t)).
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公开(公告)号：US20180213342A1
公开(公告)日：2018-07-26
申请号：US15920006
申请日：2018-03-13
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Juergen GEIGER , Peter GROSCHE
CPC classification number: H04S5/005 , G10L19/008 , G10L21/0364 , G10L21/038 , H03G5/165 , H04R3/04 , H04S7/307 , H04S2400/01 , H04S2400/05
Abstract: Example audio signal processing apparatuses and methods for processing an input audio signal into an output audio signal are disclosed. An example audio signal processing apparatus comprises a decomposer configured to decompose the input audio signal into a direct audio signal and a diffuse audio signal, a modifier configured to modify the direct audio signal in order to obtain a modified direct audio signal, wherein the modifier comprises a bandwidth extender configured to extend an upper cutoff frequency of a frequency range of the direct audio signal, and a combiner configured to combine the modified direct audio signal with the diffuse audio signal to obtain the output audio signal.
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