https://github.com/jrialland/lv2plugins

Some LV2 Audio plugins
https://github.com/jrialland/lv2plugins

audio-processing lv2-plugins

Last synced: 3 months ago
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Some LV2 Audio plugins

• Host: GitHub
• URL: https://github.com/jrialland/lv2plugins
• Owner: jrialland
• License: gpl-3.0
• Created: 2020-11-18T16:26:12.000Z (over 4 years ago)
• Default Branch: main
• Last Pushed: 2022-11-04T11:03:52.000Z (over 2 years ago)
• Last Synced: 2025-01-08T09:20:43.762Z (5 months ago)
• Topics: audio-processing, lv2-plugins
• Language: Jupyter Notebook
• Homepage:
• Size: 341 KB
• Stars: 2
• Watchers: 3
• Forks: 0
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        

[![Build Status](https://travis-ci.org/jrialland/lv2plugins.svg?branch=main)](https://travis-ci.org/jrialland/lv2plugins)

A collection of audio plugins using the [LV2](https://lv2plug.in/) (aka LADSPA version 2) standard.

Status

------

This is a work in progress, I'm still figuring out how to code user interfaces

How to build :

---------

- The following dependencies should be installed : sudo apt install g++ make cmake lv2-dev qt5-default

```

mkdir build

cd build 

cmake .. -G"UNIX Makefiles"

cmake --build .

cmake --install .

```

- git submodules must be updated in your working copy : `git pull --recurse-submodules` (needed for Catch2 tests)

The compiled plugins will be copied into your ~/.lv2/ folder, ready to be tested.

Running unit tests

------------------

From the build directory run `ctest` or `./unittests`

Smoke tests on .wav files

--------------------------

It is possible to apply some of the plugins on audio files using the [lv2file](https://github.com/jeremysalwen/lv2file) utility (sudo apt-get install lilv-utils lv2file)

```

lv2file -m -i ../examples/my_song.wav -o out.wav https://github.com/jrialland/lv2plugins/autopitch && aplay out.wav

```

Test with carla

---------------

[Carla](https://github.com/falkTX/Carla) is a lv2-enabled audio plugins host for linux, that relies on [jack](https://jackaudio.org/).

In order to test one of the plugins with carla :

1/ Start jackd, i.e by running qjackctl and clicking the 'Start' button

```

qjackctl &

```

![qjackctl main screen](https://doc.ubuntu-fr.org/_media/audio/qjackctl_fenetre_principale.png)

2/ run `carla`, and setup the plugins :

![carla screenshot](misc/carla_screenshot.png)

The screenshot shows the 'AutoPitch' plugin wired from the mic input and into the speakers. In this configuration the plugin is applied 'live' on my voice, leading to a lot of fun.

Plugins

-------

* Autopitch : slightly changes the pitch of voices, so you can sound like Cher

* ThreeDee : OpenAL-enabled 3D audio, allow to simulate the "position" of an audio input relative to the listener's space