4. Telephonic communications
  5. Subscriber line or transmission line interface
  6. Hybrid circuit

Daniel Swerdlow

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Acoustic enclosure for single audio transducer

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Having acoustic wave modifying structure
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Acoustic transducer having reduced thickness

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Electromagnetic
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Adaptive filter for network echo cancellation

Telephonic communications – Echo cancellation or suppression – Using digital signal processing
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Adaptive noise cancelling microphone system

Electrical audio signal processing systems and devices – Noise or distortion suppression – Using signal channel and noise channel
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Adaptive pilot tone location in a transmission system

Telephonic communications – Telephone line or system combined with diverse electrical... – Having transmission of a digital message signal over a...
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Profile ID: LFUS-PAI-P-2518850

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