Method and apparatus for classifying sound signals
CA 2491036 A1 · Owner: Harb, Hadi · Inventors: Chen, Liming; Harb, Hadi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a method for assigning at least one sound class to a sound signal characterized in that it comprises the following steps: dividing the sound signal into temporal segments having a specific duration; extracting the frequency parameters of the sound signal in each of the temporal segments by determining a series of values of the frequency spectrum in a frequency range between a minimum frequency and a maximum frequency; assembling the parameters in time windows having a specific duration greater than the duration of the temporal segments; extracting from each time window characteristic components; and on the basis of the extracted characteristic components and using a …
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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 July 8, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 8, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 8, 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
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.