Audio equalizers for large rooms
US3949325A · kind A · utility
12Cited by
4References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 10, 1974 |
| Grant date | Apr 6, 1976 |
| Priority date | — |
| Expiry date | Dec 10, 1994 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G5/165
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
In known audio equalization systems, full room equalization cannot be employed because it introduces undesirable transient effects during the growth stage of a sound field, especially in a large auditorium. The invention seeks to solve this problem by establishing an initial state of the equalizing system giving a reduced degree of equalization whenever a signal commences but which effects a transition to normal equalization within a time typically of the order of some tens of milliseconds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.