4. Electrical audio signal processing systems and devices
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Audio transducer improvements

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

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Audio transducer improvements

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

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Audio transducer improvements

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Having electrostatic element
Patent

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Audio transducer with controlled flexibility diaphragm

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

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Audio transducer with controlled flexibility diaphragm

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

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Audio transducer with etched voice coil

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Having electrostatic element
Patent

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Audio transducer with flexible foam enclosure

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

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Audio transducers

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Having electrostatic element
Reexamination Certificate

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Audio transmission line with energy storage network

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

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Audio user interface

Electrical audio signal processing systems and devices – Binaural and stereophonic – Pseudo stereophonic
Reexamination Certificate

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Audio user interface with selective audio field expansion

Electrical audio signal processing systems and devices – Binaural and stereophonic – Stereo speaker arrangement
Reexamination Certificate

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Audio visual speech recognition

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

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Audio voice coil adaptor ring

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Having electrostatic element
Patent

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Audio voice coil adaptor ring

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Electromagnetic
Patent

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Audio voice coil adaptor ring

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Electromagnetic
Patent

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Audio volume control circuit using pulse width modulation...

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

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Audio volume control for computer systems

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

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Audio watermarking to convey auxiliary control information,...

Electrical audio signal processing systems and devices – Sound or noise masking
Reexamination Certificate

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Audio watermarking to convey auxiliary information, and...

Electrical audio signal processing systems and devices – Sound or noise masking
Reexamination Certificate

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Audio-adapted eyeglass retainer

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Plural or compound reproducers
Patent

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