公开(公告)号：US20220319487A1

公开(公告)日：2022-10-06

申请号：US17597292

申请日：2019-07-02

Applicant: Harman Becker Automotive Systems GmbH

Inventor： Markus CHRISTOPH ,  Nikos ZAFEIROPOULOS ,  Juergen ZOLLNER ,  Vasudev KANDADE RAJAN

IPC: G10K11/178

Abstract: Methods and systems are provided for automatic noise control. Automatic noise control includes controlling a shadow noise control transfer function based on a shadow error signal and a filtered or unfiltered reference signal, generating the shadow error signal based on a filtered or unfiltered shadow anti-noise signal and an error signal, and substituting the noise control transfer function by the shadow noise control transfer function if the shadow error signal is smaller than the error signal.

公开(公告)号：US20210193103A1

公开(公告)日：2021-06-24

申请号：US17052045

申请日：2018-07-31

Applicant: Harman Becker Automotive Systems GmbH

Inventor： Juergen ZOLLNER

IPC: G10K11/178

Abstract: Sound reduction includes producing an error signal representative of sound present in a target space, producing a reference signal corresponding to undesired sound present in the target space, and producing, based on the reference signal and the error signal a cancelling output signal representative of the undesired sound present in the target space. The method further includes producing, based on the cancelling output signal, sound to destructively interfere with the undesired sound present in the target space, and limiting the amplitude or power of at least one of the reference signal, the error signal and the cancelling output signal if a first condition is met, the at least one signal under examination is at least one of the reference signal, the error signal and the cancelling output signal, and fully or partially suspending the active noise controller update mechanism if a second condition is met.

公开(公告)号：US20200267474A1

公开(公告)日：2020-08-20

申请号：US16067897

申请日：2016-12-14

Applicant: Harman Becker Automotive Systems GmbH

Inventor： Markus CHRISTOPH ,  Juergen ZOLLNER

IPC: H04R3/12 ,  H04R5/02 ,  H04R5/04 ,  H04R1/40 ,  H04S3/00 ,  H04S3/02 ,  H04S7/00 ,  G09G5/00

Abstract: At least two closely spaced identical or similar loudspeaker assemblies, each loudspeaker assembly comprising at least two identical or similar loudspeakers pointing in different directions so that the loudspeaker assemblies have adjustable, controllable or steerable directivity characteristics. For example, a control module may drive adjust, control or steer the loudspeaker assemblies so that at least one acoustic wave field is generated at least at one listening position.

公开(公告)号：US20200043461A1

公开(公告)日：2020-02-06

申请号：US16341111

申请日：2016-10-20

Applicant: Harman Becker Automotive Systems GmbH

Inventor： Juergen ZOLLNER ,  Markus CHRISTOPH

IPC: G10K11/178

Abstract: An example active noise control filtering with an adaptive filter structure includes a controllable filter matrix with reference and error input signals, and updating the filter coefficients dependent on an optional filtered reference signal and an error signal, the error signal being representative of a performance criterion of the filter module. Further, a leakage functionality and a convergence functionality is applied to the updated filter coefficients. The leakage functionality is controlled by at least one of a flush functionality, freeze functionality, spatial freeze functionality and leakage threshold, and the convergence functionality is controlled by the freeze functionality and spatial freeze functionality.

公开(公告)号：US20170195815A1

公开(公告)日：2017-07-06

申请号：US15398139

申请日：2017-01-04

Applicant: HARMAN BECKER AUTOMOTIVE SYSTEMS GMBH

Inventor： Markus CHRISTOPH ,  Craig GUNTHER ,  Matthias KRONLACHNER ,  Juergen ZOLLNER

IPC: H04S7/00 ,  H04R5/02

CPC classification number: H04S7/303 ,  G06F3/017 ,  H04R5/02 ,  H04R2201/401 ,  H04R2203/12 ,  H04S7/301 ,  H04S2400/13 ,  H04S2420/11

Abstract: The sound reproduction includes generating from a customized audio signal an acoustically isolated sound field at a position dependent on a sound field position control signal; providing a listening position signal representing a position of a listener and a listener identification signal representing the identity of the listener; and processing the listening position signal, the listener identification signal, and an audio signal. The sound reproduction further includes controlling, via the sound field position control signal, the position of the sound field dependent on the listening position signal so that the position of the sound field is at the position of the listener; and processing the audio signal according to an audio setting dependent on the identity of the listener to provide the customized audio signal.