Nondirectional acoustic generator and speaker system
US5253301A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 1990 |
| Grant date | Oct 12, 1993 |
| Priority date | — |
| Expiry date | Mar 27, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R1/403
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A nondirectional acoustic generator includes two acoustic generator units which are disposed facing each other as near as possible to the extent that diaphragms thereof do not become in contact with each other, drive units of the acoustic generator units being connected in series or in parallel to drive the acoustic generator units in phase and generate air compression sound waves which are radiated in the circumferential direction of the diaphragms. A speaker system includes a plurality of nondirectional acoustic generators coaxially disposed so as to align the centers of respective diaphragms and make the phases at sound generating areas coincident with each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.