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US 2020/0286458 A1Published application
Sound absorbing device, electronic device, and image forming apparatus
AssigneeRicoh Company, Ltd.
InventorsMasahiro ISHIDA, Naoki MATSUDA
Life of this patent
Estimating the term…
Abstract
A sound absorbing device includes: a plurality of sound absorbing units. A frequency of sound absorbed by at least one of the sound absorbing units overlaps, at least partially, with a frequency of sound with a volume increased by installation of another sound absorbing unit.
Claims1
A sound absorbing device comprising:
- at least one Helmholtz resonator including a first member and a second member, the first member having openings therein, and the second member combining with a part of the first member to form cavities, the first member being pairable with and the second member in a plurality of ways;
- a sound detector configured to detect sound from a sound source;
- a moving device configured to move a first one of the first member and the second member relative to a second one of the first member and the second member to pair the first member and the second member in different ones of the plurality of ways;
- and
- a controller configured to control driving of the moving device based on a result of detection of the sound by the sound detector.
2 more elements
Dependencies are inferred from the claim text.