Luna, Lynnette
February 2009
Urgent Communications;Feb2009, Vol. 27 Issue 2, p42
Trade Publication
The article addresses the interference problems with using digital radios with loud background noise. Don Wingo, director of research and development for Kenwood, explained that the vocoders used in Project 25 radios can produce only a rough likeness of the human voice with a limited-bandwidth channel. John Hardwick of Digital Voice Systems said that his company improved its original vocoder for digital radios to include noise suppression.


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