Noise suppressor, electronic apparatus, and noise suppression characteristic control method
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United States of America Patent
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May 17, 2011
Grant Date -
Mar 6, 2008
app pub date -
May 31, 2007
filing date -
Aug 29, 2006
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A noise suppressor for an apparatus having a cooling fan and cooling duct includes a muffler including a reflection plate for reflecting sound from the cooling fan, the reflection plate being provided at a position in the cooling duct confronting the intake plane of the cooling fan and formed substantially parallel to the intake plane. A sound-absorbing part of the muffler is provided on the reflection plate, and a distance d between the reflection plate and the intake plane is set such that d
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