twk-ladspa-plugins

Plugins

• 5801 Compressor/Expandor
• 5802 DC remove
• 5803 Delay
• 5804 Distortion
• 5805 Impulse train generator
• 5806 Voice control impulse train generator
• 5807 All pass filter with LFO control of delay interval
• 5808 Bandpass filter with LFO control of frequency
• 5809 Bandpass filter bank, 5 filters, with LFO control of frequency
• 5810 Delay with LFO control of interval
• 5811 Bandpass filter bank, 5 filters, with random control of frequency
• 5812 Linear prediction based vocoder
• 5813 Phaser based on digital integrator
• 5814 Phaser based on all pass filters
• 5815 RBJ band pass filter with bandwidth control
• 5816 RBJ band pass filter with Q control
• 5817 RBJ high pass filter with Q control
• 5818 RBJ high pass filter bank with Q control
• 5819 RBJ high shelf filter
• 5820 RBJ low pass filter with Q control
• 5821 RBJ low pass filter bank with Q control
• 5822 RBJ low shelf filter
• 5823 RBJ peaking EQ
• 5824 Adjustable reverb
• 5825 Sine wave generator
• 5826 Butterworth low pass filter
• 5827 Butterworth high pass filter
• 5828 Butterworth band pass filter
• 5829 Butterworth band stop filter
• 5830 Elliptical low pass filter
• 5831 Elliptical high pass filter
• 5832 Elliptical band pass filter
• 5833 Elliptical band stop filter
• 5834 Pitch Shifter

RBJ = Robert Bristow-Johnson of Audio-EQ-Cookbook.txt

Download

All of the plugins reside in twk.so . The zip file is available for download here.

Compilation

In the source directory just type make. This will compile the plugin twk.so.

Other make targets

The makefile has a few other targets.

$ make asm

To generate the assembly of the source files.

$ make butt_formulas

To run maxima and display the Butterworth stages coefficients formulas. Requires maxima to be installed.

$ make ellip_formulas

To run maxima and display the elliptical stages coefficients formulas. Requires maxima to be installed.

Usage

Copy twk.so to a directory referenced by the environment variable LADSPA_PATH. For example:

mkdir $HOME/ladspa
cp twk.so $HOME/ladspa
export LADSPA_PATH=/usr/lib/ladspa:$HOME/ladspa

And then run your LADSPA program.

To make the export permanent put export LADSPA_PATH=/usr/lib/ladspa:$HOME/ladspa at the end of your .profile file.

Prerequists to compile

The following packages are necessary for compiling tye plugins. The install examples assume that you are running Ubuntu.

• gcc & make sudo apt install build-essential

  Uses GNU specific functions and constants.

• ladspa-sdk sudo apt install ladspa-sdk

  This is for ladspa.h.

There are some optional packages depending on what you want to do.

• maxima sudo apt install maxima

  If you want to verify the coefficient equations for the Butterworth and elliptic filters.

• scilab sudo apt install scilab

  If you want to compute the low pass prototype filter coefficients and write the header file.

• jupyterlab & python3-ipywidgets sudo apt install jupyterlab python3-ipywidgets

  If you want to interactively design the elliptic low pass filter prototype and see the formulas for the digital filter stage coefficients.