Array of electroacoustic actuators and method for producing an array

US10425735B2 · kind B2 · utility

Assignee

• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

• Lorenz Betz · Wassertrüdingen, DE
• Lutz Ehrig · Dresden, DE
• Daniel Beer · Martinroda, DE

Key dates

• Filing date: Dec 9, 2015
• Grant date: Sep 24, 2019
• Expiry date: Oct 1, 2036

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04R2201/403
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

An array of electroacoustic actuators includes at least five electroacoustic actuators, wherein the electroacoustic actuators are connected such that, in a first parallel branch, at least two electroacoustic actuators are connected in series and, in a second parallel branch, an electroacoustic actuator is connected in series to a parallel connection of two electroacoustic actuators, the first parallel branch being connected in parallel to the second parallel branch, and the parallel branches connected in parallel being configured to be driven by an actuator amplifier, or wherein the electroacoustic actuators are connected such that, in a first serial branch, at least two electroacoustic actuators are connected in parallel and, in a second serial branch, an electroacoustic actuator is connected in parallel to a serial connection of two electroacoustic actuators, the first serial branch being connected in series to the second serial branch, and the parallel branches connected in series being configured to be driven by an actuator amplifier.