Audio codec, digital device and voice processing method
US7619551B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 29, 2008 |
| Grant date | Nov 17, 2009 |
| Priority date | — |
| Expiry date | Jul 29, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M1/6058
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An audio codec is provided, comprising an analog to digital converter (ADC) operable to receive an analog input signal for producing a first digital signal, and a first decimator down samples the first digital signal to generate a first intermediate signal. A second decimator receives a second digital signal from a digital microphone and down sample the second digital signal to generate a second intermediate signal. A multiplexer selects either the first intermediate signal or the second intermediate signal as a selected signal based on a control signal. A third decimator down samples the selected signal to generate a down sampled signal. A data formatter produces a digital output signal based on the down sampled signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.