Method and system for codec with polyringer
US7653204B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 26, 2004 |
| Grant date | Jan 26, 2010 |
| Priority date | — |
| Expiry date | Jun 26, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10H2250/631
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
In an audio processing device, a method and system for improved CODEC with polyringer are provided. An audio CODEC may comprise an audio ADC, an audio DAC, and a sidetone generator. Data from an external microphone may be processed by an audio ADC and may be sent to a processor that may be adapted to perform digital signal processing operations. The audio DAC may receive from the processor digital audio and polyphonic ringer data and may process the digital audio and polyphonic ringer data through separate digital filters and digital interpolators. The audio DAC may add the processed digital audio and polyphonic ringer data before analog conversion. The audio DAC may perform analog conversion by utilizing a delta-sigma modulator, a current-based DAC, and a switched-capacitor filter. The converted data may be filtered with an RC filter and may be utilized to drive an external speaker or earpiece.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.