Wireless speaker unit
US9554211B2 · kind B2 · utility
2Cited by
8References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 10, 2014 |
| Grant date | Jan 24, 2017 |
| Priority date | — |
| Expiry date | Aug 6, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2420/07
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A wireless speaker unit includes a radio transceiver oscillator which provides timing signals to a pulse width modulator and to a sample rate controller that provides a variable oversampling signal to a delta sigma modulator. The variable oversampling signal determined by a sampling rate of the digital audio signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.