New issue by luzpaz on void-packages repository

https://github.com/void-linux/void-packages/issues/14168

Description:
> padthv1 is an old-school polyphonic additive synthesizer with stereo fx.
> 
> padthv1 is based on the PADsynth algorithm by Paul Nasca, as a special variant of additive synthesis.

> Features:
> a pure stand-alone JACK client with JACK-session, NSM (Non Session management) and both JACK MIDI and ALSA MIDI input support;
> a LV2 instrument plug-in.
> padthv1 is free, open-source software, distributed under the terms of the GNU General Public License (GPL) version 2 or later.

WebsitE: https://padthv1.sourceforge.io/
Github: https://github.com/rncbc/padthv1
Latest stable: https://download.sourceforge.net/padthv1/padthv1-0.9.9.tar.gz

Dependencies:  
```
Mandatory:
Qt framework (core, gui, xml), C++ class library and tools for cross-platform application and UI developmenthttps://qt.io/
FFTW3, a C library for computing the discrete   Fourier transform (DFT) in one or more dimensions http://www.fftw.org

Optional (opted-in at build time):
JACK Audio Connection Kit http://jackaudio.org/
ALSA, Advanced Linux Sound Architecture https://www.alsa-project.org/
LV2, Audio Plugin Standard, the extensible successor of LADSPA http://lv2plug.in/
NSM, Non Session Management http://non.tuxfamily.org/nsm/
liblo, Lightweight OSC implementation (needed for NSM support) http://liblo.sourceforge.net/
```