Comparison of Voice Types for Helicopter Voice Warning Systems Psycho-Linguistic Research Associates Menlo Park, CA

Format:

Conference/Event

Author/Creator:

Simpson, Carol A., author.

Conference Name:

Aerospace Congress & Exposition (1984-10-15 : Long Beach, California, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1984

Summary:

Three studies compared different computer generated voices for helicopter voice warnings. Study 1 compared three LPC-encoded voices (human female, human male, and phoneme synthesized) while pilots flew simulated nap-of-the earth missions. Flight performance and pilots' ratings via semantic differential scales were measured. Study 2 produced pilot preferences for direct synthesized speech compared to LPC-encoded human female speech and compared to LPC-encoded synthesized speech. Study 3 used phonetically balanced (PB) words heard in simulated helicopter noise to compare intelligibility of direct synthesized and LPC-encoded phoneme synthesized speech. There were no flight performance differences due to voice type (Study 1), but pilots preferred direct synthesized speech over both LPC-encoded human female speech and LPC-encoded synthesized speech (Study 2). PB word intelligibility was better for direct synthesized speech than for LPC-encoded synthesized speech; there were no differences associated with sex of listener or with being a pilot or not. A runs by speech type interaction suggests differential learnability of the two speech types. (Study 3). Implications of these findings for voice selection will be discussed

Notes:

Vendor supplied data

Publisher Number:

841611

Access Restriction:

Restricted for use by site license