International Telemetering Conference Proceedings / October 30-November 02, 1995 / Riviera Hotel, Las Vegas, Nevada / This paper describes the design and characteristics of a digital voice encoding circuit
that uses the continuously variable slope delta (CVSD) modulation/demodulation
method. With digital voice encoding, the audio signal can be placed into the pulse
code modulation (PCM) data stream. Some methods of digitizing voice can require a
large amount of bandwidth. Using the CVSD method, an acceptable quality of audio
signal is obtained with a minimum of bandwidth. Presently, there is a CVSD
microchip commercially available; however, this paper will describe the design of a
circuit based on individual components that apply the CVSD method.
With the advances in data acquisition technology, increased bit rates, and
introduction of a corresponding MIL-STD, CVSD modulated voice will become
more utilized in the flight test programs and a good knowledge of CVSD will
become increasingly important. This paper will present CVSD theory, supported by
graphical investigations of a working circuit under different conditions. Finally,
several subjects for further study into CVSD will be addressed.
| Identifer | oai:union.ndltd.org:arizona.edu/oai:arizona.openrepository.com:10150/608404 |
| Date | 11 1900 |
| Creators | Olyniec, Lee |
| Contributors | Edwards Air Force Base |
| Publisher | International Foundation for Telemetering |
| Source Sets | University of Arizona |
| Language | en_US |
| Detected Language | English |
| Type | text, Proceedings |
| Rights | Copyright © International Foundation for Telemetering |
| Relation | http://www.telemetry.org/ |
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