Direct digital drive audio system and method
US9632660B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 6, 2007 |
| Grant date | Apr 25, 2017 |
| Priority date | — |
| Expiry date | Dec 24, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S715/966
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A direct digital drive audio system and method system and method are presented. The direct digital drive system and method utilizes a digital signal to directly drive the speakers. In one exemplary implementation, an audio system includes a sample register, an convergence adjustment component, an accumulated error register, a digital driver and a speaker. The sample register is coupled to the convergence adjustment component which is coupled to the accumulated error register and the digital driver which in turn is coupled to the speaker. The sample register holds an audio sample. The convergence adjustment component calculates the error for each sample. The accumulated error register stores an accumulated error. The digital driver determines whether to drive on a positive digital value, drive on a negative digital value or not drive. The speaker creates audio sounds based upon a signal from the digital driver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.