Testing to date indicates there is a significant potential for adverse interference from the digital system to the analog system, especially for General Aviation (GA) aircraft. This type of interference can be described as short, random bursts of noise capable of completely obliterating parts of the voice communication. The subsequent degrading effects on voice radio communication could jeopardize flight safety. To address this issue, the goal of the present study was to examine the degree to which such noise impacts voice radio communication intelligibility. Intelligibility was assessed employing a classic, well-established psycho-acoustic method, which uses human beings, rather than electronic test instruments, to assess speech communication systems. The discussion centers on the importance of understanding how interference with speech can degrade human performance directly, by disturbing normal social and work-related activities, and indirectly, by causing annoyance and stress.
"The Impact of Simulated Digital Data Radio Communication Induced Interference on Voice Radio Communication Intelligibility,"
Journal of Human Performance in Extreme Environments:
2, Article 10.
Available at: http://docs.lib.purdue.edu/jhpee/vol7/iss2/10