Signal processing apparatus, signal processing method, and signal processing program
US9858946B2 · kind B2 · utility
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1References
7Claims
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Key dates
| Filing date | Feb 26, 2014 |
| Grant date | Jan 2, 2018 |
| Priority date | — |
| Expiry date | Feb 26, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L25/87
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Disclosed is a signal processing apparatus that processes an input signal to accurately detect an abrupt change in the input signal in accordance with the degree of linear change of a phase component in a frequency domain. The signal processing apparatus includes a converter that converts the input signal into the phase component and an amplitude component in the frequency domain, a linearity calculator that calculates the linearity of the phase component in the frequency domain, and a determiner that determines presence of the abrupt change in the input signal based on the linearity calculated by the linearity calculator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.