SYLLABLE CODER COMMUNICATION SYSTEM.
Final rept. 1 Jun 66-31 May 67,
RCA LABS PRINCETON N J
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Describes research done to increase the resolving power of a 200 Speech Element Communication System. This system, whose primary purpose is to save channel capacity normally required for voice transmission, reduces the necessary channel capacity approximately 10001. This efficient use of a communication channel is achieved by automatically encoding of the speech signal by machine. The research covered the following subjects Improve recognition of initial voiced consonants Improve voiced-unvoiced sound detection Improve intrasyllabic pause detection Investigate fine structure speech features Use fine structure analysis to improve recognition of final th and f and initial t and k. The report includes a description of several special analyzers built to effect the desired improvement. The improved analyzer has been evaluated with 19,200 voicings of 960 syllables using 14 speakers. The results indicate that 560 syllables can be recognized with 75 percent accuracy for several speakers. Author
- Voice Communications