4. Electrical audio signal processing systems and devices
  5. Hearing aids, electrical
  6. Specified casing or housing

Keiichi Katayanagi

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Noise reducing method, noise reducing apparatus and telephone se

Electrical audio signal processing systems and devices – Hearing aids – electrical – Specified casing or housing
Patent

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Speech signal transmitting and receiving apparatus with noise se

Data processing: speech signal processing – linguistics – language – Speech signal processing – For storage or transmission
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Profile ID: LFUS-PAI-P-1331508

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