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公开(公告)号：US10375503B2
公开(公告)日：2019-08-06
申请号：US15786278
申请日：2017-10-17
Applicant: Huawei Technologies Co., Ltd.
Inventor： Michael Buerger , Heinrich Löllmann , Walter Kellermann , Peter Grosche , Yue Lang
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：US11984965B2
公开(公告)日：2024-05-14
申请号：US17496566
申请日：2021-10-07
Inventor： Mohammad Taghizadeh , Walter Kellermann , Michael Günther , Andreas Brendel
IPC: H04R3/00 , H04B7/0426 , H04B7/08
CPC classification number: H04B7/086 , H04B7/043 , H04B7/0434
Abstract: The disclosure relates to an audio processing apparatus for localizing an audio source. The audio processing apparatus comprises a plurality of audio sensors, including a primary audio sensor and at least two secondary audio sensors, configured to detect an audio signal from a target audio source, wherein the primary audio sensor defines at least two pairs of audio sensors with the at least two secondary audio sensors; and processing circuitry configured to: determine for each pair of audio sensors a first set of likelihoods of spatial directions of the target audio source using a first localization scheme; determine a second set of likelihoods of spatial directions of the target audio source using a second localization scheme; and determine a third set of likelihoods of spatial directions of the target audio source on the basis of the first sets of likelihoods and the second set of likelihoods.
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公开(公告)号：US11921198B2
公开(公告)日：2024-03-05
申请号：US17582837
申请日：2022-01-24
Inventor： Mohammad Taghizadeh , Michael Günther , Andreas Brendel , Walter Kellermann
CPC classification number: G01S15/46 , H04R1/406 , H04R3/005 , G01S2015/465
Abstract: An apparatus determines a spatial position of an audio source in multi moving audio sources scenarios. The apparatus receives audio signal versions as local sound waves. The apparatus determines first and second probabilities for a direction of arrival of the audio signal version based on the audio signal versions received within a first time interval; determines third and fourth probabilities for the direction of arrival of the audio signal version based on the audio signal versions received within a second time interval; determines a first probability difference between the first and third probabilities; determines a second probability difference between the second and fourth probabilities; combines the third probability and the first probability difference to obtain an updated third probability; combines the fourth probability with the second probability difference to obtain an updated fourth probability; and determines the spatial position based on the updated third and fourth probabilities.
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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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