DocumentCode
2428856
Title
Acoustic Noise Cancellation by Phase Alignment of Cooling Fans
Author
Guthridge, Scott ; Harper, Richard E. ; Marr, Harry ; Abali, Bulent
Author_Institution
IBM Res., Yorktown Heights, NY
fYear
2007
fDate
18-22 March 2007
Firstpage
131
Lastpage
135
Abstract
With increasing power consumption of computer systems, faster and larger cooling fans are used and acoustic noise management becomes difficult. In this paper, we show that by locking a pair of cooling fan motors into a common frequency and 180 degrees out of phase, the dominant tone most perceptible by human ear can be reduced.
Keywords
acoustic noise; cooling; fans; acoustic noise cancellation; acoustic noise management; cooling fans; noise reduction; phase alignment; power consumption; Acoustic noise; Cooling; Ear; Fans; Frequency; Humans; Noise cancellation; Noise reduction; Phase noise; Voltage control; Noise reduction; cooling; noise cancellation; power;
fLanguage
English
Publisher
ieee
Conference_Titel
Semiconductor Thermal Measurement and Management Symposium, 2007. SEMI-THERM 2007. Twenty Third Annual IEEE
Conference_Location
San Jose, CA
ISSN
1065-2221
Print_ISBN
1-4244-09589-4
Electronic_ISBN
1065-2221
Type
conf
DOI
10.1109/STHERM.2007.352412
Filename
4160900
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