Bang and Olufsen A/s

Harman International Industries, Inc.

Harman Becker Automotive Systems Gmbh

Martin Olsen

Riley Winton

Christopher Michael Trestain

Chris Ludwig

Lars Goller

David Mossington

Jakob Dyreby

Jan Abildgaard Pedersen

Tingli Cai

Matthias Von Saint-George

Søren Borup Jensen

Søren Bech

Martin Bo Møller

Peter John Chapman

Daniel Bracht

Riley Iakovidis

Philip Coleman

Philip Justin Bletsoe Jackson

Marek Olik

A computer-implemented method performed by an audio system including a processor and a plurality of loudspeakers, comprises receiving an audio signal to be output to a listener, obtaining a first Head Related Transfer Function (HRTF) corresponding to a first predefined listening pose of the listener, obtaining a second HRTF corresponding to a second predefined listening pose of the listener, determining, for each of the plurality of loudspeakers a respective loudspeaker signal using the audio signal, the first HRTF, and the second HRTF, and simultaneously outputting, via the plurality of loudspeakers using the loudspeaker signals, a first sound signal for the first predefined listening pose corresponding to the first HRTF and limited to a first predefined spatial zone, and a second sound signal for the second predefined listening pose corresponding to the second HRTF and limited to a second predefined spatial zone different from the first predefined spatial zone.

Spatial sound improvement for seat audio using spatial sound zones

Various systems and methods are provided for conducting acoustical measurements via an inflatable mannequin. In one embodiment, a system comprises an inflatable mannequin that comprises a detachable mannequin head, a plurality of inflatable anatomical parts, and a plurality of configurable joints, an inflation system that calibrates and controls inflation of the plurality of anatomical parts of the inflatable mannequin; and a joint control system that calibrates and controls the plurality of configurable joints via joint motors. In another embodiment, a first method comprises selecting a mannequin profile based on sizes of anatomical parts of the inflatable mannequin and second method comprises conducting acoustical measurements with the selected mannequin profile. In this way, acoustical measurements may be conducted to develop audio processing schemes that widen the sweet spot in an interior of a vehicle.

Method and system for obtaining acoustical measurements

The present disclosure relates to vehicle speaker systems and configurations. In one embodiment, a vehicle headrest is provided including a head support, loudspeakers, and loudspeaker supports. The loudspeaker supports can position and direct the loudspeakers in at least one of a retracted and extended position.

Vehicle headrest with speakers and control for adaptive spatial performance

The present disclosure provides methods and systems for homogenizing a low frequency listening experience for users in a plurality of locations, such as a plurality of seat positions in a vehicle. An example audio system includes a plurality of woofers configured to output low frequency sound into a listening environment to yield a homogeneous low frequency sound field. Homogeneity of the low frequency sound field in this case is for example spectrally uniform throughout an extended listening space.

Low frequency sound field in a listening environment

A loudspeaker assembly enabled with means to control the directivity of sound emitted from the loudspeaker and the use of such an assembly in audio rendering equipment. The inventive assembly includes an acoustic lens having movable mechanical means enabling controlled directivity of the sound emitted from the loudspeaker by moving one or more of the movable mechanical means from a first position to a second position.

Adjustable acoustic lens and loudspeaker assembly

An apparatus for re-distributing acoustic energy. The apparatus comprises a first concave surface defined as a surface of revolution of a line or curve. This curve of revolution is rotated beyond 230 degrees and thus defines a rather small opening, which has advantages in the frequency response output. Additionally or alternatively, edges of the concave surface may be rounded to provide advantageous effects in the sound output.

Apparatus for redistributing acoustic energy

A method and system for providing information to a user positioned in a room with two independent listening areas where, in one area, an audio signal is output compensating for the sound from the other area, and where a position between the two areas is indicated to a user. When the user moves about, the position and size of one listening area may change, and the user may be made aware of any conflict with the other listening area. The areas may be defined by boundaries where a compensation quality is at a threshold quality.

Method and a system of providing information to a user

A method of applying a combined control strategy for the reproduction of multichannel audio signals in two or more sound zones, the method comprising deriving a first cost function for controlling the acoustic potential energy, such as on the basis of the Acoustic Contrast Control method and/or the Energy Difference Maximation method, in the zones to obtain acoustic separation between the zones in terms of sound pressure, deriving a second cost function, such as the Pressure Matching method, controlling the phase of the sound provided in the zones, and where a weight is obtained for determining a combination of the first and second cost functions in a combined optimization.

Growing community of inventors

Struer, Denmark

Martin Olsen