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<!DOCTYPE HTML PUBLIC "-//Norman Walsh//DTD DocBook HTML 1.0//EN"><HTML><HEAD><TITLE>USB Audio Support</TITLE><METANAME="GENERATOR"CONTENT="Modular DocBook HTML Stylesheet"><LINKREL="HOME"TITLE="The Linux USB sub-system"HREF="book1.html"><LINKREL="UP"TITLE="How to get USB devices working under Linux"HREF="c122.html"><LINKREL="PREVIOUS"TITLE="USB Scanner Support"HREF="x291.html"><LINKREL="NEXT"TITLE="USB Modem Support"HREF="x332.html"></HEAD><BODY><DIVCLASS="NAVHEADER"><TABLEWIDTH="100%"BORDER="0"CELLPADDING="0"CELLSPACING="0"><TR><THCOLSPAN="3"ALIGN="center">The Linux USB sub-system</TH></TR><TR><TDWIDTH="10%"ALIGN="left"VALIGN="bottom"><AHREF="x291.html">Prev</A></TD><TDWIDTH="80%"ALIGN="center"VALIGN="bottom">Chapter 2. How to get USB devices working under Linux</TD><TDWIDTH="10%"ALIGN="right"VALIGN="bottom"><AHREF="x332.html">Next</A></TD></TR></TABLE><HRALIGN="LEFT"WIDTH="100%"></DIV><DIVCLASS="SECT1"><H1CLASS="SECT1"><ANAME="AEN319">USB Audio Support</A></H1><P>USB audio systems such as speakers normally comply with<AHREF="http://www.usb.org/developers/data/devclass/audio10.pdf"TARGET="_top">the USB audio class specification</A>. If your audio device does notcomply with the specification, it will not work with Linux at this time.</P><P>You need to turn on the <TTCLASS="USERINPUT"><B>Sound card support</B></TT> kerneloption, which is in the <TTCLASS="USERINPUT"><B>Sound</B></TT> section. You willthen be able to turn on the <TTCLASS="USERINPUT"><B>USB Audio support</B></TT> optionin the normal USB section.</P><P>If you elected to use modules, you need to load the module called<TTCLASS="FILENAME">audio.o</TT>.</P><P>You can test your installation by dumping some random data out to theaudio interface, using a command like<TTCLASS="USERINPUT"><B>cat /bin/bash > /dev/dsp</B></TT>. USB audio is integrated intothe normal Linux sound architecture, and most tools should work fine with USBspeakers. See the <AHREF="http://www.linuxdoc.org/HOWTO/Sound-Playing-HOWTO.html"TARGET="_top">Sound HOWTO</A> for more details and suggestions.</P></DIV><DIVCLASS="NAVFOOTER"><HRALIGN="LEFT"WIDTH="100%"><TABLEWIDTH="100%"BORDER="0"CELLPADDING="0"CELLSPACING="0"><TR><TDWIDTH="33%"ALIGN="left"VALIGN="top"><AHREF="x291.html">Prev</A></TD><TDWIDTH="34%"ALIGN="center"VALIGN="top"><AHREF="book1.html">Home</A></TD><TDWIDTH="33%"ALIGN="right"VALIGN="top"><AHREF="x332.html">Next</A></TD></TR><TR><TDWIDTH="33%"ALIGN="left"VALIGN="top">USB Scanner Support</TD><TDWIDTH="34%"ALIGN="center"VALIGN="top"><AHREF="c122.html">Up</A></TD><TDWIDTH="33%"ALIGN="right"VALIGN="top">USB Modem Support</TD></TR></TABLE></DIV></BODY></HTML>⌨️ 快捷键说明
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