Sound reproducing apparatus and method of identifying positions of speakers
US7933418B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 16, 2005 |
| Grant date | Apr 26, 2011 |
| Priority date | — |
| Expiry date | Jul 6, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2205/024
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A position of a speaker is detected two-dimensionally or three-dimensionally, and a sound field is corrected. A sound reproducing apparatus includes a measuring signal generating portion for generating a first measuring signal, a transmission portion for transmitting a second measuring signal as soon as the first measuring signal is generated, sensors disposed in a listening position and for measuring a time difference between a time instant when the second measuring signal was received and a time instant when a measuring sound wave radiated from a to-be-detected speaker in accordance with the first measuring signal was received, and a position calculating portion for calculating a distance, as to each of n sensors, between each of the n sensors and the to-be-detected speaker based on the measured time difference, and calculating the position of the to-be-detected speaker based on distances among the n sensors and the calculated distance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.