Sound source direction detecting apparatus, sound source direction detecting method, and sound source direction detecting camera
US8098843B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 22, 2008 |
| Grant date | Jan 17, 2012 |
| Priority date | — |
| Expiry date | Nov 17, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S3/86
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed herein is a sound source direction detecting apparatus including: a plurality of microphones configured to collect sounds from a sound source in order to form an audio frame; a frequency decomposition section configured to decompose the audio frame into frequency components; an error range determination section configured to determine the effects of noises collected together with the sounds as an error range relative to phases; a power level dispersion section configured to disperse power levels of the sounds for each of the frequency components decomposed by the frequency decomposition section, on the basis of the error range determined by the error range determination section; a power level addition section configured to add the power levels dispersed by the power level dispersion section; and a sound source direction detection section configured to detect the direction of the sound source based on the phase at which is located the highest of the power levels added by the power level addition section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.