4. Electrical audio signal processing systems and devices
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Multichannel masking sound generator

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

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Multichannel spectral mapping audio apparatus and method

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

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Multichannel spectral mapping audio apparatus and method

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

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Multichannel spectral mapping audio apparatus and method

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

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Multichannel spectral mapping audio apparatus and method

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

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Multichannel spectral mapping audio apparatus and method

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

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Multichannel spectral mapping audio apparatus and method

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

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Multichannel spectral mapping audio apparatus and method

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

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Multichannel spectral mapping audio apparatus and method...

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

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Multidescriptive coding technique for multistream...

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

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Multidimensional stereophonic sound reproduction system

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

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Multidirectional audio decoding

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

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Multidriver loudspeaker apparatus with improved crossover filter

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

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Multielement microphone

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

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Multifrequency detection

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

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Multifunction acoustic device

Electrical audio signal processing systems and devices – Circuitry combined with specific type microphone or loudspeaker – With magnetic loudspeaker
Reexamination Certificate

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Multifunction acoustic device

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

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Multifunction acoustic device

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

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Multifunction acoustic device

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

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Multifunction acoustic device

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

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