LandOfFree - US Patents - Listing for Electrical audio signal processing systems and devices

Electrical audio signal processing systems and devices – Acoustical noise or sound cancellation – Adjacent ear

Attenuation of sound waves

Electrical audio signal processing systems and devices – Acoustical noise or sound cancellation – Adjacent ear

Attenuation of sound waves

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

Audible display of electrical signal characteristics

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Body contact wave transfer

Audible environment awareness restoring device

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

Audible noise reducing

Electrical audio signal processing systems and devices – Vehicle

Audible signaling device with determinate directional radiation

Electrical audio signal processing systems and devices – Monitoring of sound

Audible sound detection control circuits for toys and other...

Electrical audio signal processing systems and devices – Monitoring/measuring of audio devices – Loudspeaker operation

Audibly announcing apparatus

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

Audio A/D converter using frequency modulation

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

Audio A/D convertor using frequency modulation

Electrical audio signal processing systems and devices – Binaural and stereophonic

Audio accessory circuit

Electrical audio signal processing systems and devices – One-way audio signal program distribution

Audio alert system and method

Electrical audio signal processing systems and devices – Sound effects

Audio ambience simulator

Electrical audio signal processing systems and devices – Hearing aids – electrical

Audio amplification device with volume control

Electrical audio signal processing systems and devices – With amplifier

Audio amplifier

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

Audio amplifier arrangement

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

Audio amplifier arrangement for more than two reproduction chann

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

Audio amplifier circuit

Electrical audio signal processing systems and devices – With amplifier

Audio amplifier circuit and audio device using the circuit