Voice controlled assistant with stereo sound from two speakers
US8971543B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 25, 2012 |
| Grant date | Mar 3, 2015 |
| Priority date | — |
| Expiry date | May 15, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2201/401
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A voice controlled assistant has two speakers and stereo component configured to produce high quality stereo sound. The stereo component generates a first channel signal and a second channel signal used to produce stereo sound. The first channel signal is filtered to remove a range of frequencies, such as the low frequency range. The filtered first channel signal is passed to a first transducer associated with a first speaker to output a first part of the stereo sound. The second channel signal, together with the frequency portion removed from the first channel signal, are provided to a second transducer associated with a second speaker to output a second part of the stereo sound. In this manner, the two speaker arrangement plays stereo, without distortion, while preserving all frequencies in the signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.