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Speech Intelligibility
 

The E-Speech text-to-speech synthesizer serves as the voice of the popular reverse telephone directory service now available in Illinois, New Jersey, Maryland, and coming soon to other states. In an independent telephone-based experiment, names and addresses were understood more often when pronounced by the E-Speech TTS system than by other commercial synthesizers, and they were transcribed more accurately, in less time, and with less effort, as shown in these figures.

Silverman data(169150 bytes)

Source: Silverman, K. Kalyanswamy, A., Silverman, J., Basson, S., and Yaschin, D.
"Synthesizer intelligibility in the context of a name-and-address information service," Eurospeech, 2169-2172, 1993.