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1. 发明申请

WO2022106626A1 METHOD FOR DETERMINING A SOUND FIELD 审中-公开
公开(公告)号：WO2022106626A1
公开(公告)日：2022-05-27
申请号：PCT/EP2021/082316
申请日：2021-11-19
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITAET ERLANGEN-NUERNBERG
发明人： WALTHER, Andreas , PRINN, Albert , HABETS, Emanuel , EL BABA, Youssef
IPC分类号： H04S7/00 , G01H7/00 , H04R29/00
摘要： Method for determining a sound field in an enclosed space or at a target position (TP) within the enclosed space, the method comprises the following steps: performing an acoustic measurement at at least one measurement position within the enclosed space or at a single one measurement position within the enclosed space to obtain an interim value set; estimating a surface impedance as first parameter describing the enclosed space based on the interim value set; determining a model of the enclosed space based on the first parameter; and estimating a sound field throughout the enclosed space based on the model of the enclosed space, the sound field describing a sound characteristic for a plurality of positions within the enclosed space.

2. 发明申请

WO2021204710A1 APPARATUS AND METHOD FOR AUTOMATIC ADAPTION OF A LOUDSPEAKER TO A LISTENING ENVIRONMENT 审中-公开
公开(公告)号：WO2021204710A1
公开(公告)日：2021-10-14
申请号：PCT/EP2021/058770
申请日：2021-04-01
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
发明人： WALTHER, Andreas , PRINN, Albert , TUNA, Cagdas
IPC分类号： H04R3/00 , H04S7/00
摘要： An apparatus (100) for processing an audio input signal comprising one or more audio input channels to obtain an audio output signal comprising one or more audio output channels according to an embodiment is provided. The apparatus (100) comprises an estimation unit (110) configured to estimate a radiation resistance of each driver of one or more drivers of each loudspeaker of one or more loudspeakers as an estimated radiation resistance; or configured to estimate a radiation impedance of each driver of the one or more drivers of each loudspeaker of the one or more loudspeakers as an estimated radiation impedance, wherein said estimated radiation impedance of said driver comprises estimated information on the radiation resistance of said driver. Moreover, the apparatus (100) comprises a processing unit (120) configured to obtain the one or more audio output channels by processing each audio input channel of the one or more audio input channels depending on the estimated radiation resistance or depending on the estimated radiation impedance of each of the one or more drivers of each of the one or more loudspeakers. To estimate the estimated radiation resistance or the estimated radiation impedance of each driver of the one or more drivers of each loudspeaker of the one or more loudspeakers, the estimation unit (110) is configured to estimate the estimated radiation resistance or the estimated radiation impedance depending on estimated sound pressure information indicating an estimation of sound pressure at said driver of said loudspeaker, and depending on estimated velocity information indicating an estimation of a driver velocity of said driver of said loudspeaker.

3. 发明申请

WO2021204400A1 APPARATUS AND METHOD FOR AUTOMATIC ADAPTION OF A LOUDSPEAER TO A LISTENING ENVIRONMENT 审中-公开
公开(公告)号：WO2021204400A1
公开(公告)日：2021-10-14
申请号：PCT/EP2020/060269
申请日：2020-04-09
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
发明人： WALTHER, Andreas , PRINN, Albert , TUNA, Cagdas
IPC分类号： H04R3/00 , H04S7/00
摘要： An apparatus (100) for processing an audio input signal comprising one or more audio input channels to obtain an audio output signal comprising one or more audio output channels according to an embodiment is provided. The apparatus (100) comprises an estimation unit (110) configured to estimate a radiation resistance of each driver of one or more drivers of each loudspeaker of one or more loudspeakers as an estimated radiation resistance; or configured to estimate a radiation impedance of each driver of the one or more drivers of each loudspeaker of the one or more loudspeakers as an estimated radiation impedance, wherein said estimated radiation impedance of said driver comprises estimated information on the radiation resistance of said driver. Moreover, the apparatus (100) comprises a processing unit (120) configured to obtain the one or more audio output channels by processing each audio input channel of the one or more audio input channels depending on the estimated radiation resistance or depending on the estimated radiation impedance of each of the one or more drivers of each of the one or more loudspeakers. To estimate the estimated radiation resistance or the estimated radiation impedance of each driver of the one or more drivers of each loudspeaker of the one or more loudspeakers, the estimation unit (110) is configured to estimate the estimated radiation resistance or the estimated radiation impedance depending on estimated sound pressure information indicating an estimation of sound pressure at said driver of said loudspeaker, and depending on estimated velocity information indicating an estimation of a driver velocity of said driver of said loudspeaker.

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