Difference between revisions of "Ladspa Plug-ins"

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{{Introrel|1=[http://en.wikipedia.org/wiki/LADSPA LADSPA] ('''L'''inux '''A'''udio '''D'''evelopers '''S'''imple '''P'''lugin '''A'''PI) is an audio plug-in standard originally developed on Linux, but which can be ported to Windows and Mac too. Audacity has built-in support for LADSPA plug-ins.|2=|3=[[Nyquist Plug-ins]]
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{{DISPLAYTITLE:LADSPA Plug-ins}}
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{{Introrel|1=[http://en.wikipedia.org/wiki/LADSPA LADSPA] ('''L'''inux '''A'''udio '''D'''evelopers '''S'''imple '''P'''lug-in '''A'''PI) is an audio plug-in standard originally developed on Linux, but which can be ported to Windows and Mac too. Audacity has built-in support for LADSPA plug-ins.|2=|3=[[Nyquist Plug-ins]]
 
*[[VST Plug-ins]]
 
*[[VST Plug-ins]]
 
*Other pages in our [[:Category:Plug-ins|Plug-ins category]]}}
 
*Other pages in our [[:Category:Plug-ins|Plug-ins category]]}}
 
  
 
__TOC__
 
__TOC__
  
 
==Writing LADPSA plug-ins==
 
==Writing LADPSA plug-ins==
Audacity behaves as an excellent LADSPA host. Just read up about LADSPA, and make your plug-ins correctly. As a starting point, look at the [http://gdam.ffem.org/ladspa-doc/ladspa.html LADSPA developers' documentation] and the LADSPA site's [http://www.ladspa.org example plug-ins]. Keep in mind that Audacity "runs" the plug-in multiple times with some specific number of samples. So, don't assume that your plug-in will get the entire selection the first time. Here is an [http://www.it.iitb.ac.in/~chetanv/personal/acads/musicology/project/ example LADSPA plug-in] made by a user for plotting frequency variation. 
 
  
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Audacity behaves as an excellent LADSPA host. Just read up about LADSPA, and make your plug-ins correctly. As a starting point, look at some [http://www.linuxlib.ru/en/ladspa/ladspa.html LADSPA Plugin Developers' Documentation] and some [http://linux-sound.org/ladspa.html example plug-ins]. Keep in mind that Audacity "runs" the plug-in multiple times with some specific number of samples. So, don't assume that your plug-in will get the entire selection the first time.
  
==Using LADSPA plug-ins==  
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== Obtaining LADSPA plug-ins ==
===Linux===
 
Nothing special is needed for using LADSPA plug-ins for Audacity on Linux. It's usually most convenient to place your LADSPA plugsin in:
 
* {{path|/usr/lib/ladspa}}
 
* {{path|/usr/local/lib/ladspa}}
 
* {{path|$LIBDIR/ladspa}}
 
* {{path|$INSTALL_PREFIX/ladspa}}
 
* any colon-delimited path specified by the {{path|LADSPA_PATH}} environment variable
 
  
Then restart Audacity and the plug-ins should be in the {{menu|Effect}} menu, underneath the divider.  
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* '''Windows and Mac:''' Any LADSPA plug-in compiled as a Windows .dll or Mac .dylib shared library will work on these platforms. An extensive set of "swh" plug-ins by Steve Harris is available for [http://www.fosshub.com/Audacity.html/LADSPA_plugins-win-0.4.15.exe Windows] and [http://www.fosshub.com/Audacity.html/swh-plugins-mac-0.4.15.zip Mac]. 
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* '''GNU/Linux:''' The easiest and recommended method of obtaining pre-compiled LADSPA plug-ins is to install them using the download repository or package manager for your distribution of Linux. Other LADSPA plug-ins can be found online such as at http://linux-sound.org/ladspa.html. However in some cases downloading plug-ins from external sites will require you to compile the plug-ins yourself, or at least manually install them yourself.
  
If you have the ladspa-sdk installed, you can run '''listplugins''' from a terminal to list all plug-ins in your {{path|LADSPA_PATH}}.   
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==Using LADSPA plug-ins==  
 
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For instructions on how to load new LADSPA effects into Audacity please see [https://manual.audacityteam.org/man/effect_menu.html#add_ladspa this page] in the [https://manual.audacityteam.org/ Audacity Manual].  
{{Hint|Advanced users on Linux can compile the latest Audacity Beta [http://audacity.sourceforge.net/community/developers#svn development code] and enable [[LV2_Support/Project_Docs|experimental support]] for [http://lv2plug.in/ LV2]. This is an extensible, "second-generation" version of LADSPA that has a wider range of effects, can use LV2 synthesizer plug-ins as powerful tone generators, and supports effect categorisation.}} <br>
 
 
 
===Windows and Mac OS===
 
Audacity also supports LADSPA plug-ins on Windows and Mac OS. Any LADSPA plug-in compiled as a Windows .dll or Mac .dylib shared library will work on these platforms. An extensive set of LADSPA plug-ins is available for [http://audacity.sourceforge.net/beta/ladspa/ladspa-0.4.15.exe Windows] and [http://ardour.org/files/releases/swh-plugins-0.4.15.dmg Mac OS X].
 
  
To add LADSPA plug-ins to Audacity, place them in the '''Plug-Ins''' folder inside the Audacity installation folder. Restart Audacity and the plug-ins should be in the {{menu|Effect}} menu, underneath the divider. The Audacity installation folder is usually under {{path|C:\Program Files}} on Windows, or under {{path|Mac Hard Disk > Applications}} on OS X.
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On GNU/Linux, if you have the ladspa-sdk installed, you can run '''listplug-ins''' from a terminal to list all plug-ins in your {{path|LADSPA_PATH}}.  
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{{Hint|LV2 is an extensible, "second-generation" version of LADSPA that has a wider range of effects and can use LV2 synthesizer plug-ins as powerful tone generators. Audacity now supports LV2 effects. For details please see [https://manual.audacityteam.org/man/effect_menu.html#LV2_effects this page] in the Manual.}}  
  
As on Linux, Audacity will also detect LADSPA plug-ins if you put them in a folder specified in the {{path|LADSPA_PATH}} environment variable. 
 
  
 
[[Category:Plug-ins]]
 
[[Category:Plug-ins]]

Latest revision as of 11:01, 26 November 2017


LADSPA (Linux Audio Developers Simple Plug-in API) is an audio plug-in standard originally developed on Linux, but which can be ported to Windows and Mac too. Audacity has built-in support for LADSPA plug-ins.
 
Related article(s):

Writing LADPSA plug-ins

Audacity behaves as an excellent LADSPA host. Just read up about LADSPA, and make your plug-ins correctly. As a starting point, look at some LADSPA Plugin Developers' Documentation and some example plug-ins. Keep in mind that Audacity "runs" the plug-in multiple times with some specific number of samples. So, don't assume that your plug-in will get the entire selection the first time.

Obtaining LADSPA plug-ins

  • Windows and Mac: Any LADSPA plug-in compiled as a Windows .dll or Mac .dylib shared library will work on these platforms. An extensive set of "swh" plug-ins by Steve Harris is available for Windows and Mac.
  • GNU/Linux: The easiest and recommended method of obtaining pre-compiled LADSPA plug-ins is to install them using the download repository or package manager for your distribution of Linux. Other LADSPA plug-ins can be found online such as at http://linux-sound.org/ladspa.html. However in some cases downloading plug-ins from external sites will require you to compile the plug-ins yourself, or at least manually install them yourself.

Using LADSPA plug-ins

For instructions on how to load new LADSPA effects into Audacity please see this page in the Audacity Manual.

On GNU/Linux, if you have the ladspa-sdk installed, you can run listplug-ins from a terminal to list all plug-ins in your LADSPA_PATH.

LV2 is an extensible, "second-generation" version of LADSPA that has a wider range of effects and can use LV2 synthesizer plug-ins as powerful tone generators. Audacity now supports LV2 effects. For details please see this page in the Manual.