4. Electrical audio signal processing systems and devices
  5. Feedback suppression

Ji-An Gong

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Acoustic coupling compensation for a speakerphone of a system

Data processing: generic control systems or specific application – Specific application – apparatus or process – Digital audio data processing system
Reexamination Certificate

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Method and apparatus for independent gain control of a...

Electrical audio signal processing systems and devices – Feedback suppression
Reexamination Certificate

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Portable computer expansion base with enhancement speaker

Electrical audio signal processing systems and devices – Having non-electrical feature – And loudspeaker
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2143007

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