Acoustic impedance matching device and loudspeaker provided with such a device
US10306353B2 · kind B2 · utility
0Cited by
8References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 18, 2016 |
| Grant date | May 28, 2019 |
| Priority date | — |
| Expiry date | Mar 18, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R1/30
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention relates to an acoustic impedance matching device arranged so as to be mounted behind a loudspeaker. Said device comprises a chamber at least partially filled with an absorbent material. Said device is characterized in that the cross-section of the chamber increases with the distance from the loudspeaker, and the density of the absorbent material increases with the distance from the loudspeaker.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.