Patent · US Active

Sound wave field generation

US10715917B2 · kind B2 · utility

8Cited by

2References

6Claims

0Family size

Assignee

HARMAN BECKER AUTOMOTIVE SYSTEMS GMBH · DE

Inventors

Markus Christoph · Straubing, DE
Leander Scholz · Salching, DE

Key dates

Filing date	Mar 24, 2015
Grant date	Jul 14, 2020
Priority date	—
Expiry date	Mar 24, 2035

Classification

Technology area (CPC H)Electricity
CPC primaryH04S2420/13
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A system and method is configured to generate a sound wave field around a listening position in a target loudspeaker-room-microphone system in which a loudspeaker array of K≥1 groups of loudspeakers is disposed around the listening position, and a microphone array of M≥1 groups of microphones is disposed at the listening position. The system and method include equalizing filtering with controllable transfer functions in signal paths upstream of the K groups of loudspeakers. The system and method further include controlling with equalization control signals of the controllable transfer functions for equalizing filtering according to an adaptive control algorithm based on error signals and an input signal. The microphone array includes at least two first groups of microphones that are annularly disposed around a listener's head, around or in an artificial head or around or in a rigid sphere.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.