Accession Number:
ADA045079
Title:
A Digital Microprocessor Channel Vocoder
Descriptive Note:
Technical note
Corporate Author:
MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB
Personal Author(s):
Report Date:
1977-08-10
Pagination or Media Count:
90.0
Abstract:
A complete, real-time, channel vocoder delivering good speech quality with a 2400-bitsecond data transmission rate was implemented using purely digital circuitry in the form of a high-speed programmed microprocessor. Necessary algorithms are presented and their effect on the machine design is discussed in detail. The end product is a very high-speed computing machine measured in program throughput terms. It turned out to have a high degree of programming flexibility, which would make it adaptable to other tasks. This was a bonus, not an original goal. The project was conceived and successfully realized as the most practical way to build a vocoder for actual use in the LES- 89 satellite communications system.
Descriptors:
Subject Categories:
- Electrical and Electronic Equipment
- Computer Hardware
- Voice Communications