Method and apparatus for removing noise from electronic signals
CA 2465552 A1 · Owner: Burnett, Gregory C. · Inventors: Burnett, Gregory C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and system for removing acoustic noise removal from human speech is described. Acoustic noise is removed regardless of noise type amplitude, or, orientation. The system includes a processor coupled among microphones and a voice, activation detection ("VAD") element. The processor executes denoising algorithms, that generate transfer functions. The processor receives acoustic data from the, microphones and data from the VAD. The processor generates various transfer functions when the VAD indicates voicing activity and when the VAD indicates no, voicing activity. The transfer functions are used to generate a denoised data stream.
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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
- Filed November 21, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 21, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 21, 2024.
- 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.