Method and apparatus for adaptive conversation detection employing minimal computation
US8315865B2 · kind B2 · utility
4Cited by
5References
17Claims
0Family size
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Key dates
| Filing date | May 4, 2004 |
| Grant date | Nov 20, 2012 |
| Priority date | — |
| Expiry date | Oct 8, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L25/78
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A conversation detector and detection method is based on voice band energy detection. The detector is formed of a signal preconditioner, a comparator and an analysis unit. The comparator generates signal pulses reduced in resolution and sample rate (e.g., single bit data) and indicative of energy level and/or duration of activity detected in subject audio signals. The analysis unit determines from the generated signal pulses whether a conversation exists in the subject audio signal. The detector is also able to adapt to environmental noise change, automatically calibrate and operate in low power consumption mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.