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1 senoner 542 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
2     <html>
3     <head>
4     <link rel="stylesheet" type="text/css" href="index.css">
5     <title>The Linux Sampler Project</title>
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98    
99     <body>
100    
101     <div id="mainwindow"><img name="LinuxSampler" src="gfx/lsbackground.jpg" alt="LinuxSampler">
102    
103     <h1><span class="hidden">The LinuxSampler Project</span></h1>
104    
105     <table border=0 cellspacing=0 cellpadding=0><tr><th colspan=2 align=left>
106     <img name="h1blank" src="gfx/h1blank.png" alt="blank"><span class="hidden">about</span></th></tr>
107     <tr><td valign=top>
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121     </td><td valign=top width="100%">
122     <div id="contents">
123    
124     <h2>FAQ</h2>
125     <p class="default">
126     Here is a collection of frequently asked questions. Please read them before asking on
127     the mailing list.
128     </p>
129    
130     <h3>linuxsampler? qsampler? libgig? liblscp? hu?</h3>
131     <p class="default">
132     There are currently four subprojects in the LinuxSampler project; linuxsampler,
133     qsampler, libgig and liblscp. linuxsampler is the core of the sampler, it includes the
134     sampler engines and audio and MIDI drivers. linuxsampler itself is decoupled from any
135     user interface. It offers a network server (LSCP server) to allow to be controlled by
136     an arbitrary user frontend from an arbitrary place over a netwrok connection or
137     locally from the same machine as well.
138     qsampler is the first GUI frontend written for linuxsampler, it is written with the Qt
139     GUI library and thus can be compiled for various architectures and operating systems
140     without modifications on the source code.
141     libgig is a C++ library written for loading Gigasampler files and DLS Level 1 and 2
142     files. libgig is used by linuxsampler to load Gigasampler files and it <b>can</b> be
143     used by qsampler to retrieve additional informations about Gigasampler files. liblscp
144     is a C library written as a wrapper around the LSCP network protocol, thus to control
145     linuxsampler. It was originally designed to be used on both sides, that is on server /
146     backend side (linuxsampler) and on client / frontend side (e.g. qsampler). But it's now
147     only used on client side by qsampler at the moment.
148     </p>
149    
150     <h3>What do I need to compile and install?</h3>
151     <p class="default">
152     You should compile and install at least linuxsampler. As a beginner you should
153     defintely as well compile and install qsampler, liblscp and libgig. qsampler is a
154     convenient GUI frontend for linuxsampler. qsampler depends on liblscp, so you have to
155     compile and install liblscp before starting to build qsampler. It is recommended to
156     install libgig as well, you don't have to actually because libgig is at the moment
157     statically included with linuxsampler, but qsampler <b>can</b> use it to retrieve
158     additional informations from Gigasampler files.
159     </p>
160    
161     <h3>How do I checkout from CVS?</h3>
162     <p class="default">
163     The procedure of checking out the newest version from CVS is described on the
164     <a href="downloads.html">Downloads</a> site.
165     </p>
166    
167     <h3>How do I compile from CVS?</h3>
168     <p class="default">
169     The procedure for compiling from CVS is the same for all subprojects, that is no matter
170     if you are compiling linuxsampler, qsampler, libgig or liblscp from CVS, you have to
171     have the autotools (automake, autoconf and libtool) installed and compile it that way:
172     </p>
173     <table class="default" border="0" cellpadding="1" cellspacing="5">
174     <tr>
175     <td><pre class="code">1
176     2
177     3</pre>
178     </td>
179     <td width="100%">
180     <pre class="code">make -f Makefile.cvs
181     ./configure
182     make</pre>
183     </td>
184     </tr>
185     </table>
186    
187     <h3>Can I use linuxsampler without a GUI as well?</h3>
188     <p class="default">
189     Yes, but unfortunately there is no console based frontend frontend for linuxsampler (yet).
190     You have to write LSCP scripts and send it to the running linuxsampler application.
191     You can send a LSCP script to linuxsampler on the console with the following command:
192     </p>
193     <table class="default" border="0" cellpadding="1" cellspacing="5">
194     <tr>
195     <td><pre class="code">1</pre>
196     </td>
197     <td width="100%">
198     <pre class="code">cat yourscript.lscp | netcat -t localhost 8888</pre>
199     </td>
200     </tr>
201     </table>
202     <p class="default">
203     Of course you can also replace localhost by the IP address of the machine where
204     linuxsampler is running. Alternatively you can also make a telnet connection (port 8888)
205     to linuxsampler's LSCP server and type commands manually.
206     </p>
207    
208    
209     <h3>Are there example LSCP script files somewhere?</h3>
210     <p class="default">
211     Yes, have a look on the <a href="documentation.html">Documentation</a> site for some
212     common LSCP script examples. For details about LSCP read the
213     <a href="api/draft-linuxsampler-protocol.html">LSCP reference</a>. Be welcome to ask
214     questions for details about LSCP on the mailing list.
215     </p>
216    
217     <a name="dropouts"></a>
218     <h3>I get dropouts (click sounds, noise), what can I do about it?</h3>
219     <p class="default">
220     In order to achieve good results under Linux you need to have a
221     <a href="http://www.linuxdj.com/audio/lad/resourceslatency.php3">patched kernel</a>.
222     There are different patches available depending on what version (2.4.x or 2.6.x) of kernel you use.
223     The <a href="http://jackit.sourceforge.net/docs/faq.php">JACK FAQ site</a> is also a good resource
224     how to configure a realtime stable kernel. But note; LinuxSampler currently has not support for
225     libcap yet, that means if you are still using a 2.4.x Linux kernel you most probably have to run
226     LinuxSampler with root priviliges (support for libcap is planned though). As a rule of thumb: if
227     you don't get warnings like "cannot mlockall() memory" you are safe to run it as ordinary user as well.
228     </p>
229    
230     </div>
231     </td></tr></table>
232    
233     </div>
234    
235     </body>
236     </html>

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