Signal processing system and a method
US10070221B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2017 |
| Grant date | Sep 4, 2018 |
| Priority date | — |
| Expiry date | Dec 18, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R5/033
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A signal processing system and a method thereof are disclosed, using a differential amplifier to extract sensed signals associated with headphone wear status generated by the diaphragm of a headphone and transmitted to a sense ADC for digitization. To exclude residual music signal in the extracted sensed signals for subsequent processing, a temporary memory is provided to match and synchronize a round-trip delay in the signal processing system. The round-trip delay is computed to adjust the depth and clock speed of a buffer/FIFO of the temporary memory to eliminate residual music signal in order to separate the sensed signal of the headphone unit diaphragm displacement and use the extracted sensed signal as a reference source for subsequent analysis and auto-control and/or signal compensation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.