Patent · US Active

Loudspeaker with pressure compensation element

US9674605B2 · kind B2 · utility

0Cited by

4References

19Claims

0Family size

Assignee

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

Inventors

Daniel Beer · Martinroda, DE
Lutz Ehrig · Dresden, DE

Key dates

Filing date	Jun 5, 2015
Grant date	Jun 6, 2017
Priority date	—
Expiry date	Dec 9, 2035

Classification

Technology area (CPC H)Electricity
CPC primaryH04R29/001
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A loudspeaker includes a sound transducer, a housing and a unit configured to influence the temperature, such as a pressure compensation element. The sound transducer includes a membrane, the membrane enclosing a gas volume along with the housing. The sound transducer is configured to cause the membrane to vibrate, so that the gas volume is changed in accordance with the vibration. The unit configured to influence the temperature is configured to counteract a change of state, which is due to the membrane vibration, by means of a change in temperature of the gas volume.

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