Patent · US Expired

Sound system

US7123724B1 · kind B1 · utility

2Cited by

7References

15Claims

0Family size

Inventors

Gerhard Pfaffinger · Regensburg, DE
Franz Lorenz · Bocholt, DE
Markus Christoph · Straubing, DE

Key dates

Filing date	Nov 22, 2000
Grant date	Oct 17, 2006
Priority date	—
Expiry date	Nov 1, 2023

Classification

Technology area (CPC H)Electricity
CPC primaryH04R5/02
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

The invention is directed to a sound system with four loudspeakers and at least one signal processing device connected to the input of two loudspeakers and controlled by two input signals. The signal processing device produces control signals for the loudspeakers. The respective control signals are equal to the sum of the input signals which are weighted differently with respect to amplitude and phase, so that the radiation characteristic of the two loudspeakers depends on the weighting of the input signals.

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