Difference between revisions of "Ladspa Plug-ins"

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'''Related pages:'''
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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]]
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*[[VST Plug-ins]]
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*Other pages in our [[:Category:Plug-ins|Plug-ins category]]}}
  
'''[[Nyquist Plug-ins]]'''
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__TOC__
  
'''[[VST Plug-ins]]'''
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==Writing LADPSA plug-ins==
  
'''Other pages in our [[:Category:Plug-ins|Plug-ins category]]'''
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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.
  
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== Obtaining LADSPA plug-ins ==
  
Audacity behaves as an excellent LADSPA ('''L'''inux '''A'''udio '''D'''eveloper's '''S'''imple '''P'''lugin '''A'''PI) host. Just read up about LADSPA, and make your plug-ins correctly. As a starting point, look at the {{external|[http://gdam.ffem.org/ladspa-doc/ladspa.html LADSPA developers' documentation]}} and the LADSPA site's {{external|[http://www.ladspa.org example plug-ins]}}.  
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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.
  
Nothing special is needed for writing LADSPA plug-ins for Audacity on '''Linux'''. Just place your plug-in in $HOME/.ladspa/ and it should appear in the {{menu|Effect}} menu. Also, 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 {{external|[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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==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].
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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.}}  
  
Audacity also supports LADSPA plug-ins on '''Windows''' and '''Mac OS X'''.  In fact the current {{external|[http://audacityteam.org/vst/ VST enabler]}} for these platforms works by putting VST plug-ins inside a LADPSA wrapper. So if you can compile your LADSPA plug-in source code to be a windows .dll or Mac shared Lib, it will work there as well. Simply place your plug-in in the '''Plug-Ins''' folder inside your Audacity installation folder and restart Audacity. Your installation folder is usually under {{path|C:\Program Files}} on Windows, or under {{path|Mac Hard Disk > Applications}} on OS X.
 
  
 
[[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.