Filtering system for equalizing a loudspeaker system
US8687822B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 12, 2006 |
| Grant date | Apr 1, 2014 |
| Priority date | — |
| Expiry date | Oct 21, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G5/005
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An improved filtering system for loudspeaker equalization is comprised of two filtering sections, a single pole filtering section having single pole filters for shaping the frequency response of the audio signal over the operative bandwidth of the equalized loudspeaker system, and a parametric filtering section that provides for localized parametric equalization for compensating for room or other environmental resonances. The filtering system of the invention can be used to create a wide variety of useful filter shapes, while minimizing phase distortion that can harm the transient response of phase-aligned loudspeakers of a loudspeaker system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.