System and method for reducing quantization noise

Details System and method for reducing quantization noise System and method for reducing quantization noise

1997-10-03

2000-05-30

Chin, Stephen

Pulse or digital communications

Pulse code modulation

Correcting or reducing quantizing errors

375254, H04L 2706

Patent

active

060699213

ABSTRACT:
A system and method for reducing quantizing noise is presented. In some Internet access and other dial-up services, modems or other sources connect into analog switching systems, and then are A/D-converted to reach remote switching offices. There, the digitized signal is converted back to analog, only to be re-digitized for T1 transmission. In the invention, the sample points used to re-digitize the signal are synchronized with those used to originally sample the signal, nearly eliminating second quantization noise.

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