Time warp signal recognition processor using recirculating and/or reduced array of processor cells
US4509187A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 14, 1982 |
| Grant date | Apr 2, 1985 |
| Priority date | — |
| Expiry date | Jun 14, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L15/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In known speech recognition systems, processors and methods, utterances are analyzed to obtain a set of reference signals. An unknown signal may be compared with the reference signals. The unknown signal may be said to be the reference signal with which it most closely corresponds as defined by some correspondence measure. Known signal recognition arrangements using multiple processor cells tend to be expensive, in part because they tend to use many processor cells. The disclosed system, processor and method contemplate an arrangement including an array of processor cells for time warping an unknown signal having m elements with respect to a reference signal having n elements or vice versa. The cells, responsive to control signals on a control diagonal, generate the correspondence measure. As the signals propagate through the array, the instant arrangement recirculates signals from cells near one (or first) periphery of the arrangement, e.g., from the right periphery, to cells near another (or second) periphery, e.g., to the left periphery. As a result, rather than using m.times.n processor cells, the instant arrangement may use substantially less than m.times.n cells.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.