MFB Loudspeaker
US4488012A · kind A · utility
11Cited by
4References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 20, 1983 |
| Grant date | Dec 11, 1984 |
| Priority date | — |
| Expiry date | Apr 20, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R9/04
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An MFB loudspeaker comprising a detector element mounted on a diaphragm on a specific position, i.e., a nodal line of a primary resonance mode thereof for generating a voltage proportional to a component indicative the vibratory characteristics of the diaphragm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.