231 lines
3.3 KiB
HTML
231 lines
3.3 KiB
HTML
<HTML
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><HEAD
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><TITLE
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>Noise Reduction</TITLE
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><META
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NAME="GENERATOR"
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CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK
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REL="HOME"
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TITLE="Linux Ecology-HOWTO"
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HREF="book1.htm"><LINK
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REL="PREVIOUS"
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TITLE="Alternative Power Supplies - Sun, Wind, Water"
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HREF="c227.htm"><LINK
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REL="NEXT"
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TITLE="Harddisk"
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>Linux Ecology-HOWTO</TH
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CLASS="chapter"
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><H1
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><A
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NAME="ecology-howto-noise-reduction"
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></A
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>Chapter 3. Noise Reduction</H1
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><DIV
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CLASS="TOC"
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><DL
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><DT
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><B
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>Table of Contents</B
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></DT
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><DT
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><A
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HREF="c231.htm#ecology-howto-fan"
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>Fan</A
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></DT
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><DT
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><A
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HREF="x250.htm"
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>Harddisk</A
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></DT
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><DT
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><A
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HREF="x257.htm"
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>Speakers</A
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></DT
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></DL
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></DIV
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><P
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> Most of the noise emitted by a computer is produced by the fan, the harddisk and the speakers.
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</P
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><DIV
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CLASS="sect1"
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><H1
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CLASS="sect1"
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><A
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NAME="ecology-howto-fan"
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></A
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>Fan</H1
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><P
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> <P
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></P
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><UL
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><LI
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><P
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> <B
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CLASS="command"
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>libsensors0</B
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> is a library to read temperature/voltage/fan sensors
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</P
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></LI
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><LI
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><P
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> <B
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CLASS="command"
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>lm-sensors</B
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> "Kernel drivers to read
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temperature/voltage/fan sensors. This is a module for reading the
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temperature/voltage/fan sensors in Linux via the LM78/79 chip and
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possibly sensors on the SMBus (System Management Bus, usually found in
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P6 and P-II systems). The LM80 and a LM78-clone called W83781D are
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also supported."
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<A
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HREF="http://www.lm-sensors.nu/"
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TARGET="_top"
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>http://www.lm-sensors.nu/</A
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>
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</P
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></LI
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><LI
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><P
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>
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ACPI, see APM chapter
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</P
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></LI
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><LI
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><P
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> <A
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HREF="http://www.tinet.org/~com.ea/rtsensors/"
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TARGET="_top"
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>RTSensors</A
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>
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can be configured by the user as an expert controller: The user can
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specify the max/min speed of the system fans, the maximum affordable
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temperature and so on. The controller tries to reduce fan speed to reduce
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noise while the temperature is in a safe range chosen by the user. So fan
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speed is modified automatically by the control algorithm, you don't have to use
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those mechanic or thermal regulators on your fans anymore.
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</P
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></LI
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></UL
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>
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</P
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></DIV
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></DIV
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><DIV
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HREF="c227.htm"
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>Prev</A
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HREF="book1.htm"
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>Home</A
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HREF="x250.htm"
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>Next</A
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><TR
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><TD
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WIDTH="33%"
|
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ALIGN="left"
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VALIGN="top"
|
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>Alternative Power Supplies - Sun, Wind, Water</TD
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><TD
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WIDTH="34%"
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ALIGN="center"
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VALIGN="top"
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> </TD
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><TD
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WIDTH="33%"
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ALIGN="right"
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VALIGN="top"
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>Harddisk</TD
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></TR
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></TABLE
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> |