Method and apparatus of analysis of signals from non-stationary processes possessing temporal structure such as music, speech, and other event sequences
US5751899A · kind A · utility
Inventors
Key dates
| Filing date | Jun 8, 1994 |
| Grant date | May 12, 1998 |
| Priority date | — |
| Expiry date | Jun 8, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/288
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for the analysis of a non-stationary signal to determine the presence of pseudo-periodic components in the signal. The present invention possesses a memory for recent events, displays expectations for upcoming events, and can handle missing events at those times. The apparatus ignores events which should not effect its prediction. These properties are achieved by driving one or more nonlinear oscillators with an input signal, causing a subset of the oscillators to entrain to pseudo-periodic components of the input signal. When incoming events fall within one of the pulses produced by a nonlinear oscillator, the nonlinear oscillator adjusts it phase and/or period to synchronize with the input signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.