Robert Boschgmbh

Christoph Montag

Eberhard Krieger

Ulrich Wieduwilt

Walter Dietrich

Udo Klaas

Juergen Wermuth

Ludwig Klapproth

Hermann Holtsmannspoetter

Joerg Sahrhage

Johann Zeller

Christian Vehorn

Karsten Geier

To improve upon a method of adjusting at least one filter parameter such as the mid-frequency of at least one filter unit provided with a playback system for audio signals, this filter unit being provided in particular for at least one digital equalizer assigned to the playback system, as well as an associated playback system so as to achieve automatic optimization of an acoustically correct bass level boosting,

Method of adjusting filter parameters and an associated playback system

A method is proposed for automatically adjusting the filter parameters&#x2014;center frequency, quality and amplification or attenuation&#x2014;of at least one digital equalizer which is a component of a reproduction device for audio signals in a vehicle passenger compartment. To that end, first of all, the acoustical frequency response of the passenger compartment is ascertained. The inadequacies in the acoustics of the passenger compartment in the form of local maxima and minima in the measured frequency response are then determined. On this basis, the filter parameters are adjusted automatically so that at least a portion of these inadequacies is compensated. A reproduction device for audio signals for implementing this method is also proposed.

Method for automatically adjusting the filter parameters of a digital equalizer and reproduction device for audio signals for implementing such a method

A method and an arrangement for reproducing a stereophonic or multi-channel audio signal in a space, particularly in the passenger compartment of a motor vehicle, is described Loudspeakers for reproducing acoustic signals are arranged at a plurality of positions in the space, and an amplitude and phase of the acoustic signals radiated from each loudspeaker are influenced so that wave fronts of the acoustic signals radiated by the loudspeakers overlap to form at least one first resulting wave front for a left channel and a second resulting wave front for a right channel of the stereophonic audio signal, so that the resulting wave fronts intersect in a listening zone within the space, and yield a stereo aural impression inside the listening zone.

Method and device for reproducing a stereophonic audiosignal

Growing community of inventors

Hildesheim, Germany

Christoph Montag