TESTING THE EFFECTIVE VOCABULARY CAPACITY METHOD OF EVALUATING SPEECH RECOGNIZERS

Authors
  1. Van de Vegte, J.M.E.
  2. Taylor, M.M.
Corporate Authors
Defence and Civil Inst of Environmental Medicine, Downsview ONT (CAN)
Abstract
The performance of isolated-word speech recognizers is typically measured using error rates. To obtain reliable error rate estimates for good recognizers can require many thousands of subject utterances, and, the better the recognizer, the more sensitive the error rate is ot the actual challenge vocabulary and the skill of the talker. The Effective Vocabulary Capacity (EVC) is the maximum vocabulary that a recognizer can in principle handle at a given error rate. It relies on measures that are relatively independent of the challenge vocabulary and that require only tens or hundres of test utterances. The EVC algorithm is tested with both synthetic and real recognizer data.
Keywords
EFFECTIVE VOCABULARY CAPACITY (EVC)
Report Number
DCIEM-90-17 — Reprint; Research Paper
Date of publication
01 Jan 1990
Number of Pages
12
Reprinted from
Speech Communication, vol 9, no 4, 1990, p 337-347
DSTKIM No
94-03091
CANDIS No
136018
Format(s):
Hardcopy;Originator's fiche received by DSIS

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