4. Electrical audio signal processing systems and devices
  5. One-way audio signal program distribution
  6. Public address system

Alexander F. Thornhill

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Front-end processor for narrowband transmission

Electrical audio signal processing systems and devices – One-way audio signal program distribution – Public address system
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Transmission line for planar waves

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Having acoustic wave modifying structure
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Profile ID: LFUS-PAI-P-439753

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