Sound identification systems
US9286911B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 5, 2014 |
| Grant date | Mar 15, 2016 |
| Priority date | — |
| Expiry date | Nov 5, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L25/63
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A digital sound identification system for storing a Markov model is disclosed. A processor is coupled to a sound data input, working memory, and a stored program memory for executing processor control code to input sound data for a sound to be identified. The sample sound data defines a sample frequency domain data energy in a range of frequency. Mean and variance values for a Markov model of the sample sound are generated. The Markov model is stored in the non-volatile memory. Interference sound data defining interference frequency domain data is inputted. The mean and variance values of the Markov model using the interference frequency domain data are adjusted. Sound data defining other sound frequency domain data are inputted. A probability of the other sound frequency domain data fitting the Markov model is determined. Finally, sound identification data dependent on the probability is outputted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.