Performance Evaluation of the Vocal-Response Synthesizer

Abstract

The vocal-response synthesizer was evaluated from the standpoint of speech intelligibility, speech quality, and speaker recognizability by tests that included the diagnostic rhyme test, the Fairbanks rhyme test, and a specially developed test of speaker recognizability. Synthesized speech was also evaluated after being successively processed from two to four times by the vocal-response synthesizer. Comparative data for a conventional vocoder and a voice-excited vocoder were also obtained. [The research reported in this paper was sponsored by the U. S. Air Force Cambridge Research Laboratories, Office of Aerospace Research.]