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Woofer module for use in a television set

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

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Woofer speaker and acoustically coupled sub-woofer speaker syste

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

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Woofer speaker mounting structure for portable computer

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

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Woofer system for an automotive audio system with a protecter th

Electrical audio signal processing systems and devices – Vehicle
Patent

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Word recognition in a speech recognition system using data reduc

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

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Word spotting in a speech recognition system without predetermin

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

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Wordspotting for voice editing and indexing

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

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Written language parser system

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

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Zero phase shift filtering

Electrical audio signal processing systems and devices – Including frequency control – Having crossover filter
Patent

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Zinc-air dry cell holder and hearing aid that uses it

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

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Zoom microphone device

Electrical audio signal processing systems and devices – Directive circuits for microphones
Reexamination Certificate

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[Earphone structure with a composite sound field ]

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

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[Speaker]

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

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