Loudness normalization control for a digital hearing aid
CA 2372017 A1 · Owner: Emma Mixed Signal C.V. · Inventors: Cornelisse, Leonard E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A digital user loudness normalization control is provided for implementation within a digital hearing aid or other personal amplification device having a digital signal processor. The digital hearing aid may be either a singlefrequency channel system or a multi-channel system. The control alters the input/output characteristic or loudness function of the single channel device or in each channel of a multi-channel device in response to the loudness control signal and the input signal level. The control system can be programmed to provide numerous modes of operation including curvilinear compression, input compression, output compression and combinations thereof , for correcting an …
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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 April 25, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 25, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 25, 2022.
- 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.