Accession Number:

AD0829179

Title:

VOICE COMMUNICATION DEGRADATION STUDYY.

Descriptive Note:

Final rept.,

Corporate Author:

ATLANTIC RESEARCH CORP ALEXANDRIA VA JANSKY AND BAILEY ENGINEERING DEPT

Personal Author(s):

• Duff, William G.
• Heisler, Kenneth G., Jr.
• Stemple, Harry L., III
• Catt, Roy E.

Report Date:

1968-02-01

Pagination or Media Count:

256.0

Abstract:

One problem that confronts interference analysis and communication system designers is that of relating operational performance to signal and interference conditions at the input to a receiver. The report presents the results of a study and investigation performed to develop procedures and techniques for simulating and determining the effects of CW, AM, pulse and FM interference on AM voice communication systems. The interfering signal conditions that are discussed include both co-channel and adjacent channel frequencies in the vicinity of the fundamental response. The major topics presented in this report are 1 identification of the factors that influence the performance of AM voice systems in the presence of interference, 2 definition of the methods by which these factors influence performance, 3 determination of the receiver characteristics that have a significant influence on performance, 4 development of procedures for simulating the significant receiver effects and calculating performance from receiver characteristic data, 5 development of measurement techniques and procedures for obtaining the required characteristics, and 6 validation of the procedures and techniques developed under the subject contract. Author

Descriptors:

• *RADIOFREQUENCY INTERFERENCE
• *VOICE COMMUNICATIONS
• RADIO RECEIVERS
• AMPLITUDE MODULATION
• SIGNAL TO NOISE RATIO
• PERFORMANCE(ENGINEERING)
• FREQUENCY MODULATION
• SPEECH TRANSMISSION
• SIMULATION
• MATHEMATICAL MODELS
• INFORMATION THEORY
• DEGRADATION

Subject Categories:

• Cybernetics
• Radio Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE