Audio playback device and method
US11309857B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 15, 2020 |
| Grant date | Apr 19, 2022 |
| Priority date | — |
| Expiry date | Jun 18, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G2201/103
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A device is provided that includes a plurality of signal processing paths coupled in parallel, an adding circuit and an amplifier circuit. The number of the signal processing paths is N and each of the signal processing paths receives a same input signal to generate an output analog signal after a signal processing is performed, wherein each of the signal processing paths at least includes a DAC circuit and the signal processing at least includes a digital to analog conversion corresponding to the DAC circuit. The adding circuit adds the output analog signal generated from each of the signal processing paths to generate a total output analog signal. The amplifier circuit receives the total output analog signal to adjust a signal intensity of the total output analog signal according to a gain to generate an output audio signal, wherein the gain is 1/N.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.