Noise reduction device

A noise reduction device includes a noise controller, a control sound output component and a residual sound detector. The noise controller is configured to produce a control sound signal for canceling out noise. The control sound output component is configured to output a control sound based on the...

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Bibliographische Detailangaben
Hauptverfasser:	MAEDA TSUYOSHI, ASAO YOSHIFUMI
Format:	Patent
Sprache:	eng
Schlagworte:	ACOUSTICS ACOUSTICS NOT OTHERWISE PROVIDED FOR DEAF-AID SETS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL MUSICAL INSTRUMENTS PHYSICS PUBLIC ADDRESS SYSTEMS SOUND-PRODUCING DEVICES
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Beschreibung
Zusammenfassung:	A noise reduction device includes a noise controller, a control sound output component and a residual sound detector. The noise controller is configured to produce a control sound signal for canceling out noise. The control sound output component is configured to output a control sound based on the control sound signal produced by the noise controller. The residual sound detector is configured to detect a residual sound produced by superposition of noise and the control sound outputted from the control sound output component. The control sound output component and the residual sound detector are housed in the shell. The control sound output component and the residual sound detector are away from a rear face of the seat.