User's Manual

Table Of Contents
6881096C72-A August 7, 2003
Glossary-9
vector sum excited
linear predictive
coding
Not used with XTL 5000. Replaced with the APCO 25 standard. See
APCO 25.
VHF Very-High Frequency.
VIP Vehicle Interface Port.
VOCON See vocoder/controller.
vocoder An electronic device for synthesizing speech by implementing a
compression algorithm particular to voice. See also voice encoder.
vocoder/controller A PC board that contains an ASTRO radio’s microcontroller, DSP,
memory, audio and power functions, and interface support circuitry.
voice encoder The DSP-based system for digitally processing analog signals, and
includes the capabilities of performing voice compression algorithms or
voice encoding. See also vocoder.
voltage-controlled
oscillator
An oscillator in which the frequency of oscillation can be varied by
changing a control voltage.
VSELP See vector sum excited linear predictive coding.
Term Definition