Digital speaker driving apparatus
US8306244B2 · kind B2 · utility
26Cited by
9References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 22, 2010 |
| Grant date | Nov 6, 2012 |
| Priority date | — |
| Expiry date | Oct 26, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/15
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A digital sound system suitable for a digital speaker device for directly converting analog sound by a circuit using a ΔΣ modulator and a mismatch shaping filter circuit to output a plurality of digital signals and a plurality of speakers driven by the plurality of digital signals. A digital speaker driving device includes a ΔΣ modulator, a post filter, s driving circuits, and a power supply circuit to supply power to the ΔΣ modulator, the post filter and the s driving elements and the s driving circuits are adapted to s digital signal terminals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.