A Novel Multi-Exponential Function-based Companding Technique ...

4 downloads 35 Views 812KB Size Report
adapts a companding scheme that can expand small signals and compress large ... by employing an exponential companding technique. This technique is ...
INTL JOURNAL OF ELECTRONICS AND TELECOMMUNICATIONS, 2010, VOL. 56, NO. 2, PP. 125-128 10.2478/v10177-010-0016-1 Manuscript received April 8, 2010; revised June, 2010.

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

 7DOHE0RD]]HQL+HQU\6HOYDUDMDQG