High-volume acoustic transducer
US5484969A · kind A · utility
6Cited by
9References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 25, 1994 |
| Grant date | Jan 16, 1996 |
| Priority date | — |
| Expiry date | Jul 25, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S116/18
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A high-volume source for very low frequency applications in which conventional speakers are inadequate is disclosed. A presently preferred embodiment comprises a reservoir 32 with a pressure relief 33; a controller 34; a supply blower 36; an exhaust blower 38; a positive plenum 40; a negative plenum 42; an orifice plate with valving 44; a horn 46; and pressure transducers 48, 50, 52, 54, feeding detected pressure levels to the controller 34. An electrical command signal s(t) is also input to the controller. The command signal is a voltage analogous to the acoustic pressure or volume velocity to be output by the source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.