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6 <title>The Linux Sampler Project</title>
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111 <body>
112
113 <div id="mainwindow"><div class="lsbackground"><img name="LinuxSampler" src="gfx/lsbackground.jpg" alt="LinuxSampler"></div>
114
115 <h1><span class="hidden">The LinuxSampler Project</span></h1>
116
117 <table border=0 cellspacing=0 cellpadding=0><tr><th colspan=2 align=left>
118 <img name="h1about" src="gfx/h1about.png" alt="About"><span class="hidden">about</span></th></tr>
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175 </td><td valign=top width="100%">
176 <div id="contents">
177
178 <h2>The Project</h2>
179 <p class="default">
180 The LinuxSampler project was founded with the
181 goal to produce a free, streaming capable open source pure
182 software audio sampler with professional grade features,
183 comparable to both hardware and commercial Windows/Mac software
184 samplers and to introduce new features not yet available by any
185 other sampler in the world.
186 </p>
187
188 <h2>The Engine</h2>
189 <p class="default">
190 <u><b>LinuxSampler</b></u> was designed very modular, especially
191 (and in contrast to other samplers) it was decoupled from any user
192 interface. LinuxSampler itself usually runs as own process in the
193 background of the computer and usually does not show up anything on
194 the screen, or at most it can be launched to show status
195 informations and debug messages in a console window:<br>
196 <br>
197 <a href="screenshots/ls_0_5_1_console.png">
198 <img src="screenshots/ls_0_5_1_console_preview.png">
199 </a><br>
200 <br>
201 That means LinuxSampler itself is the "engine" of the sampler, it
202 is the software component which performs all the heavy and time
203 critical computational tasks of handling MIDI events, calculating
204 the audio data and sending the final audio data to your sound
205 card(s). We call LinuxSampler the <i>sampler backend</i>.
206 </p>
207
208 <h2>The Face(s)</h2>
209 <p class="default">
210 Obviously you need some way to control the sampler. That's where a
211 2nd application comes into game, which we call a
212 <i>sampler frontend</i> application. A frontend is (usually) a
213 graphical application, visible on the screen, providing the user
214 a set of e.g. menus, buttons, sliders, dials, etc. to allow the
215 user to control the sampler in a convenient way. It merely sends
216 the user requests to the sampler engine (LinuxSampler) and in turn
217 shows the engine's status informations on the screen. A frontend
218 does not perform any signal processing tasks, so you can see it as
219 a "face" of the sampler.<br>
220 <br>
221 For luxury we already provide you two different frontends / "faces"
222 for LinuxSampler:
223 </p>
224 <ul>
225 <li>
226 <u><b>QSampler</b></u> is a light-weight frontend written in
227 C++, using straightforward native graphical controls of the
228 underlying operating system. That way the appearance of
229 QSampler on the screen is very fast and it only consumes very
230 little resources. Due to its utilization of the operating
231 system's common GUI controls, it looks slightly different on
232 every operating system (also dependent of the user's selected
233 theme on his OS):<br>
234 <br>
235 <a href="screenshots/qs_0_2_1_win.jpg">
236 <img src="screenshots/qs_0_2_1_win_preview.jpg">
237 </a>&nbsp;
238 <a href="screenshots/qs_0_2_1_ubuntu.png">
239 <img src="screenshots/qs_0_2_1_ubuntu_preview.png">
240 </a><br>
241 <br>
242 Note however, QSampler does not fully support all features of
243 the sampler engine (LinuxSampler) yet. Most notably the
244 engine's instruments database feature is not yet covered by
245 QSampler. But if you don't need that particular feature,
246 you're certainly fine with QSampler as well.<br>
247 <br>
248 </li>
249
250 <li>
251 <u><b>JSampler</b></u> is a full-fledged frontend for
252 LinuxSampler, written in Java and currently comes in two
253 flavors: <b>JSampler "Classic"</b> offers straightforward GUI
254 controls whereas <b>JSampler "Fantasia"</b> provides a modern
255 skin based user interface:<br>
256 <br>
257 <a href="screenshots/fantasia.png"><img src="screenshots/fantasia-preview.png"></a>
258 <br>
259 JSampler supports all features currently available in the
260 sampler engine (LinuxSampler). Also note that even though
261 JSampler is written in Java and slightly more hungry
262 regarding resources (compared to QSampler), this usually
263 does not have any impact on the audio rendering performance
264 of the sampler, since the engine runs completely independently
265 and with much higher CPU priority than the frontend(s).<br>
266 </li>
267 </ul>
268 <p class="default">
269 It's completely up to you which frontend to use. You could even use
270 both parallel at the same time for the same sampler engine
271 instance, really! ;-) You're concerned that your sampler frontend
272 might waste precious resources of your computer? No problem, just
273 setup the sampler session for your needs and then quit the
274 frontend application. The sampler engine doesn't care! It continues
275 to do its job. You need to change something? Start the frontend
276 again (or another frontend) and you see what you expect to see: the
277 current setup and state of the running sampler engine.
278 </p>
279
280 <h2>The Format</h2>
281 <p class="default">
282 It is planned to support all common sampler formats in
283 LinuxSampler, but at the moment we chose to concentrate on the
284 Gigasampler format, because when we started this project, the
285 Gigasampler format was (in our opinion) the most popular
286 and "best" sampler format in regards of quality and power,
287 especially for the synthesis of natural instruments like pianos,
288 brass and bowed instruments. But we already made good advance in
289 implementing this format, so we are optimistic to start with
290 adding other formats soon. Beside that we also planned to
291 design our own, sophisticated sampler format to introduce a more
292 powerful and more flexible sampler format compared to
293 any sampler format currently available in the world. Be encouraged
294 to share your ideas about such a new format with us!
295 </p>
296
297 <h2>The Editor</h2>
298 <p class="default">
299 <u><b>gigedit</b></u> allows you to edit and create instruments
300 for the Gigasampler format, which can be used with LinuxSampler
301 as well as with Tascam's Gigastudio. Following our line of
302 modularity we also made the instrument editors independent
303 applications. Because let's face it: every sampler format is
304 different, so in our opinion it is better to honor the specific
305 features of one format with its own instrument editor application
306 instead of trying to fiddle everything into one single bloated
307 application. So gigedit is our first editor, dedicated to the .gig
308 format:<br>
309 <br>
310 <a href="screenshots/gigedit_0_0_3.png"><img src="screenshots/gigedit_0_0_3_preview.jpg"></a>
311 <br>
312 You can use gigedit as stand-alone application or in conjunction
313 with LinuxSampler. For the latter case gigedit installs a plugin
314 into the sampler engine, so the engine (and with it the frontends)
315 knows that gigedit actually exists and can handle the .gig format.
316 So even though we decoupled the sampler's components into
317 independent applications, they all work seamlessly together.
318 <a href="http://download.linuxsampler.org/doc/gigedit/quickstart/gigedit_quickstart.html#live_editing">
319 Just press the "Edit" button
320 </a> on a channel strip of a frontend and
321 gigedit will automatically popup on the screen and you're
322 immediately ready to edit your selected instrument, making all your
323 modifications audible in realtime. Even when editing huge
324 instruments of 1GB or more, tweak the instrument with gigedit and
325 immediately hear it while playing on the keyboard at the same time.
326 And the good thing: even with new sampler formats we're going to
327 add soon (and with it new editors), you don't have to remember
328 which instrument you loaded uses which format. Simply click on
329 "Edit" in a frontend and the sampler engine will choose the right
330 instrument editor application for the respective instrument for
331 you.
332 </p>
333
334 <h2>The Technical Interface</h2>
335 <p class="default">
336 As the components of the sampler are independent applications,
337 there must be a way to let the applications communicate with each
338 other. For this LinuxSampler provides a native C++
339 <a href="http://en.wikipedia.org/wiki/Application_programming_interface">API</a>
340 as well as a network interface using an ASCII based protocol which
341 we call "<a href="http://www.linuxsampler.org/api/draft-linuxsampler-protocol.html" title="LinuxSampler Control Protocol">LSCP</a>"
342 for controlling the sampler engine and managing sampler sessions.
343 Our frontends support that network interface, which also allows to
344 control the sampler engine with the GUI frontend(s) remotely from
345 another computer, probably even running a completely different
346 Operating System. And compared to other remote control solutions,
347 the frontend won't feel sluggish, as the frontend is running on
348 your local machine.<br>
349 <br>
350 You can also configure your computer to automatically start the
351 sampler engine and loading your prefered sampler session without
352 any frontend, simply by using a <i>LSCP session file</i>. How do
353 you get such a "LSCP session file"? Both frontends write LSCP
354 session files for you when you request them to save your current
355 sampler session. And as those LSCP session files are ordinary
356 human readable text files, you can adjust them with any text
357 editor if you want.
358 </p>
359
360 <h2>The Compatibility</h2>
361 <p class="default">
362 LinuxSampler is available for the most popular operating
363 systems and already supports a variety of audio and MIDI driver
364 systems on each OS. It does not require any special dedicated
365 device drivers from the sound card manufacturers, so you can
366 also use it with cheap consumer cards. Due to its clean design
367 the sampler can be ported to other operating systems and
368 extended for further driver systems with a minimum of effort.
369 So we're prepared for the future!
370 </p>
371
372 <h2>The Community</h2>
373 <p class="default">
374 You need a helping hand? You certainly get the answers on your
375 personal questions on our
376 <a href="http://bb.linuxsampler.org/">web forum</a>.<br>
377 <br>
378 All applications are under active development. However we all work
379 on this project for fun in our spare time. There are still so many
380 things to do and our hands are limited. So don't hesitate on
381 participating to the project! You don't necessarily need to be a
382 skilled programmer to help the project. Testing the applications,
383 <a href="http://bugs.linuxsampler.org.">reporting bugs</a>, writing
384 documentation, providing artwork, themes for frontends, etc. helps
385 us and all users a lot! Simply subscribe to our
386 <a href="http://lists.sourceforge.net/lists/listinfo/linuxsampler-devel">
387 developers mailing list
388 </a> and we'll of course take you by the hand in case you want to
389 participate with active source code development. Don't be afraid!
390 You have your own ideas and concepts for making the sampler better?
391 Great, share them with us!<br>
392 <br>
393 </p>
394
395 </div>
396 </td></tr></table>
397
398 </div>
399
400 </body>
401 </html>

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