Soundra is a digital audio laboratory that enables:

• Sound exploration through modular synthesis
  With 43 interconnectable building blocks, the possibilities are virtually endless.
• Learning digital signal processing (DSP)
  By discovering its vocabulary and fundamental principles.
• Music creation
  Through a fresh, outside-the-box approach.

• Patch & play live
  No need to compile!
• Highest audio bit depth available
  32-bit floating-point calculations in real-time; no wavetable!
• Supports feedback loops
  You can literally plug anything into anything!
• Fully polyphonic
  With up to 32 stereo voices per module.
• A great learning tool
  Learn about the fundamentals of DSP by yourself.
• Responsive minimalist GUI
  Simplicity is at the core of Soundra's experience.
• Ecological
  Why waste resources? You already have a computer.
• No controller required
  MIDI input is supported, but you can play with your computer keyboard or mouse.
• Always evolving
  The project keeps growing through continuous improvement.
• It's free!
  Not everyone can afford the space, hardware or DIY components to get started.

Before downloading anything, you must read and accept the following software license.

Soundra v1.8.13
Updated on February 18th, 2026

    
 
SHA-512 checksum: d01404be3825313d92f55d64fc65d0c2b85715a72feac5c5df2f6684a131362920ad891e2454e04b6724fcaabdeb2abe16849afea1142b4f85b2c8e96e13b600      SHA-512 checksum: 1dea30f272664669ff0546761c4f6d3825efd6678bdd2cdf55f779de0e7fdd1ae143c5c87f9287a67a3e3c9b21310c786ce289a01f4f0571a95f102cd8bcf2d3

This program works on Windows 7 and over.
You might get a warning that the publisher is unknown. More about this...

Access Soundra's documentation here or via the menu at the top.

Full change log

FBIde custom files

• Keywords
• Theme: NightShift
• Theme: Chocomint
• Theme: EyeCandy

Project files

• JIGSAW.zip  [Updated on March 18th, 2026 ; 93.0kB]
  • JIGSAW_BASICS.bas
  • JIGSAW_MATH.bas
  • JIGSAW_AUDIO.bas
  • JIGSAW_GRAPHICS.bas
  • JIGSAW_MUSIC.bas
  • EN_LANGPACK.bas
• SOUNDRA v1.8.13   [Updated on February 18th, 2026]
  • SOUNDRA.bas
  • FRACTIONAID.bas
  • SYNTH.bas
  • ROUTINES.bas
  • CONTROLS.bas
  • GCONTROLS.bas
  • INTERFACE.bas
  • EN_LANGPACK_EXT.bas
  • SCALE_MODES.bas
• Required binaries - 32 or 64 bits for Windows
  • soft_oal.dll (included version : 1.22.2)
  • freetype.dll (included version : 2.10.4)
  • zlib1.dll (included version : 1.2.5)
  • FreeImage.dll (included version : 3.18)

FreeBasic
FreeBASIC is a free and open source (GPL), BASIC compiler for Microsoft Windows, DOS and Linux.

FBIde
FBIde is one of the most popular and oldest editors for the FreeBASIC programming language.

OpenAL-Soft
Open source audio library

The FreeType project
FreeType is a freely available software library to render fonts.

FreeImage
FreeImage is an Open Source library for the manipulation and support of popular image formats like PNG, BMP, JPEG and TIFF.

Free fonts used:

• Icons via Fontello, an online font generator. Licence.txt
• SANSATION by Bernd Montag

Soundra currently supports the importation of 8, 16, 24 and 32-bit, mono and stereo WAV files. You can use a free software like Audacity to convert your files to WAV.