Comparison of voice types for helicopter voice warning systemsThree related studies were conducted to compare different types of human voice warnings. In the first study, a comparison of three LPC-encoded voices, human female, human male, and phoneme-synthesized, by the criteria of pilot flight task performance showed no differences due to the voice type. In the second study, pilots' preferences were investigated, by comparing preference for direct synthesized speech to the LPC-encoded human female speech and to LPC-encoded synthesized speech. Most pilots were found to prefer direct synthesized speech over both LPC-encoded human female speech and the LPC-encoded synthesized speech. In the third study, phonetically balanced (PB) words heard in simulated helicopter noise were used to compare the intelligibility of direct synthesized and LPC-encoded phoneme-synthesized speech types. PB word intelligibility was found to be better for direct synthesized speech than for the LPC-encodes synthesized speech.
Document ID
19860041292
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Simpson, C. A. (Psycho-Linguistic Research Associates Menlo Park, CA, United States)
Marchionda-Frost, K. (Psycho-Linguistic Research Associates Menlo Park, CA, United States)
Navarro, T. (Psycho-Linguistic Research Associates Menlo Park, CA, United States)