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Abstract
Speech output devices are currently in development stages in the computer industry. These devices will permit an operator to perform an enquiry to a computer and receive a spoken response message. This study investigated speech rates and verification procedures with a simulated speech output device. Operators were required to write an alphanumeric response message during message transmission. Three speech rates were investigated : 45, 60 and 75 characters per minute (e.p.m.). The results showed the 60 c.p.m. to be the most favourable in terms of operator accuracy and preference. Three procedures of verifying response messages were investigated : Required Verification, Optional Verification, and No Verification. The results showed the Optional Verification method to be the most efficient.
