Hearing aid and a method of noise reduction
CA 2545009 C · Owner: Paludan-Muller, Carsten · Inventors: Paludan-Muller, Carsten; Hansen, Martin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hearing aid (30) comprises a microphone (71) a signal processing means (20) , and an output transducer (22) and the signal processing means (20) comprises a set of audio processing parameters mapped to a set of stored noise classes (12) and means (8) for classifying the background noise for the purpose of optimizing the frequency response in order to minimize the effects of the background noise. The hearing aid may further comprise a neural net for controlling the frequency response. A method for reducing a noise component in a signal is also devised, which method comprises classification of the noise component, comparing the noise component to a set of known noise components and …
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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 24, 2003 and granted November 12, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 24, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 24, 2025.
- 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
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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.