Automatic sound level compensator for a sound reproduction device mounted in a vehicle
US5018205A · kind A · utility
48Cited by
11References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 11, 1990 |
| Grant date | May 21, 1991 |
| Priority date | — |
| Expiry date | Jul 11, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G9/025
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
In an automatic loudness compensator provided in a sound reproduction device in a vehicle, the sound level is compensated to reproduce a sound source with the high fidelity intended by the producer of the source of sound. The level of sound frequency-pressure is increased or decreased relative to a middle range of sound frequency at a sound level lower or higher than a reference sound level, respectively. The level of sound frequency-pressure is also adjusted based on the noise produced by the movement of the vehicle and on the acoustic characteristic of the passenger compartment of the vehicle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.