Voice enhancer system
CA 1301073 C · Owner: Mcgregor, Thomas · Inventors: Wemyss, George Andrew; Mcgregor, Thomas; Firth, Ian Mason
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A voice enhancer system for a car includes a pair of microphones positioned adjacent to the front seats of the car, and a pair of loudspeakers positioned adjacent to the rear seats. The microphones are connected to the loudspeakers, via an amplifier/electrical conditioning unit, by electrical wiring positioned behind the car's upholstery. The conditioning unit which, includes filters and a frequency shifter is adjusted to prevent acoustical 'howl-around' within the enclosure of the car. For voice enhancement from the rear to the front of the car, microphones may be positioned adjacent to the rear seats, and loudspeakers may be positioned adjacent to the front seats, these components being …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted May 19, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 19, 2009.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.