Program or method and device for detecting an audio component in ambient noise samples
CA 2579463 C · Owner: Liechti Ag · Inventors: Bichsel, Martin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention herein relates to a method for the compression of an electric audio signal which is , produced in the process of recorded the ambient noise with an electroacoustic transducer and in , particular a microphone. The invention also relates to a device for carrying out this method. The , amount of data which is produced in the process of recording even short hearing samples by , means of a monitor may be considerably reduced by effecting a normalisation to a range of , values D and a subsequent nonlinear mapping to a second preferably smaller , range of values W and then storing the result in an electronic memory.
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
- Filed June 22, 1998 and granted May 8, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 22, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 22, 2020.
- 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.