Methods and devices for reducing sampling noise in analog signals using linear interpolation
US6654469B1 · kind B1 · utility
11Cited by
2References
48Claims
0Family size
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Key dates
| Filing date | Jun 28, 1999 |
| Grant date | Nov 25, 2003 |
| Priority date | — |
| Expiry date | Jun 28, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/66
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Sampling noise in an analog signal output from a codec, such as a speech codec, is reduced using linear interpolation. The output of a codec is input into two sample and hold circuits. The circuits generate two output signals (i.e. voltages) for each input signal. One of the output signals represents an interpolated signal located midway between an historical output signal and input signal. The generation of interpolated output signals reduces sampling noise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.