4. Telephonic communications
  5. Having light wave or ultrasonic link for speech or paging...
  6. Including fiber optic link within telephone network

Yan M. Cheng

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Selective call communication system having adaptive voice data e

Telephonic communications – Having light wave or ultrasonic link for speech or paging... – Including fiber optic link within telephone network
Patent

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Speech dialog method and system

Data processing: speech signal processing – linguistics – language – Speech signal processing – Recognition
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