Noise reduction device and household electrical appliance product

The invention discloses a noise reduction device and a household electrical appliance product. The noise reduction device comprises a shell; the noise source is arranged in the shell cavity of the shell; the perforated plate is arranged in the shell cavity around the noise source, an annular resonan...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	LIU ZHANGYU
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ACOUSTICS ACOUSTICS NOT OTHERWISE PROVIDED FOR METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL MUSICAL INSTRUMENTS PHYSICS SOUND-PRODUCING DEVICES
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