Personal speakerphone device
US8325911B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 18, 2011 |
| Grant date | Dec 4, 2012 |
| Priority date | — |
| Expiry date | Mar 18, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M9/085
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
This disclosure describes a personal speakerphone device for teleconferencing a local participant with near side audio data and a far side participant with far side audio data. The device includes a controller that couples to a speaker and a microphone inside an enclosure that couples the speaker and the microphone within a coupling frequency range, and where the enclosure houses the speaker, the microphone, the controller, analog to digital conversion circuitry, digital to analog conversion circuitry, supporting circuitry, and one or more ports for data through which audio data is transferred. Additionally, the device includes a first frequency band decomposer, a second frequency band decomposer, one or more echo cancellers, and a converger. Further, the device includes a primary doubletalk detector and a secondary doubletalk detector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.