4. Electrical audio signal processing systems and devices
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Anti-noise-electret pick-up with an electret

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Housed microphone
Reexamination Certificate

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Anti-resonant structure for speakers

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Having acoustic wave modifying structure
Reexamination Certificate

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Anti-side tone transmitter

Electrical audio signal processing systems and devices – Having non-electrical feature – Having microphone
Patent

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Anti-sound beam method and apparatus

Electrical audio signal processing systems and devices – Acoustical noise or sound cancellation – Acoustic – nonairborne vibration sensing or counterwave emission
Reexamination Certificate

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Anti-theft boat speaker brackets

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Mounting or support feature of housed loudspeaker
Patent

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Antihowling hearing aid

Electrical audio signal processing systems and devices – Sound effects – Reverberators
Patent

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Apex loudspeaker

Electrical audio signal processing systems and devices – Noise or distortion suppression – Interpolation
Patent

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Apparatus and method for a custom soft-solid hearing aid

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

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Apparatus and method for active control of sound transmission th

Electrical audio signal processing systems and devices – Acoustical noise or sound cancellation – Particular transducer or enclosure structure
Patent

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Apparatus and method for actively reducing noise in vehicular pa

Electrical audio signal processing systems and devices – Acoustical noise or sound cancellation – Within cabin or compartment of vehicle
Patent

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Apparatus and method for actively reducing vibration and/or nois

Electrical audio signal processing systems and devices – Acoustical noise or sound cancellation – Counterwave generation control path
Patent

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Apparatus and method for adjusting audio equipment in acoustic e

Electrical audio signal processing systems and devices – Binaural and stereophonic – Broadcast or multiplex stereo
Patent

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Apparatus and method for adjusting levels between channels of a

Electrical audio signal processing systems and devices – Binaural and stereophonic – Center channel
Patent

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Apparatus and method for adjusting sound volume for...

Electrical audio signal processing systems and devices – Including amplitude or volume control – With manual volume control
Reexamination Certificate

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Apparatus and method for adjusting sound volume for...

Electrical audio signal processing systems and devices – Including amplitude or volume control – Automatic
Reexamination Certificate

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Apparatus and method for aligning and controlling reception...

Electrical audio signal processing systems and devices – One-way audio signal program distribution – Public address system
Reexamination Certificate

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Apparatus and method for analyzing an electro-acoustic system

Electrical audio signal processing systems and devices – Monitoring/measuring of audio devices
Reexamination Certificate

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Apparatus and method for audio data compression and expansion wi

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

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Apparatus and method for automatic equalization of personal mult

Electrical audio signal processing systems and devices – Binaural and stereophonic
Patent

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Apparatus and method for automatic speech recognition

Electrical audio signal processing systems and devices – One-way audio signal program distribution – Public address system
Patent

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