Apparatus and method for articulatory speech recognition
CA 1182922 A · Owner: Trans-Data Associates, A Partnership · Inventors: Kellett, Henry G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The parallel application of a plurality of vocal tract filters (12) is utilized in a speech recognition apparatus. Each of the filters in this bank of filters has a complex Fourier transfer function that is the reciprocal of a particular vocaltract transfer function corresponding to a particular speech sound. The speech elements identified are phoneme segments of short duration (typically 10 milliseconds) and, correspond to phonemes only in the case of time invariant (sustainable) phonemes. In a preferred embodiment it is, assumed that the bank of inverse filters when designed, to correspond with the sustainable phonemes is capable, also of closely matching (in a piecewise fashion) the …
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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
- Granted February 19, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 19, 2002.
- 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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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.