Method and system for position detection of a sound source
US8165317B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 6, 2009 |
| Grant date | Apr 24, 2012 |
| Priority date | — |
| Expiry date | Jun 21, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R3/005
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A position detection method, system, and computer readable article of manufacture tangibly embodying computer readable instructions for executing the method for detecting the position of a sound source using at least two microphones. The method includes the steps of: emitting a reproduced sound from the sound source; observing the reproduced sound and an observed sound at the microphones; converting the reproduced sound and the observed sound into electrical signals; transforming the signals of the reproduced sound and of the observed sound into frequency spectra by a frequency spectrum transformer apparatus; calculating Crosspower Spectrum Phase (CSP) coefficients of the frequency spectra of the signals by a CSP coefficient calculator apparatus; and calculating distances between the position of the sound source and the positions of the microphones based on the calculated CSP coefficients by a distance calculating apparatus, thereby detecting the position of the sound source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.