Cabbage ~ Audio Software Development


Cabbage is a software for prototyping and developing audio instruments with the Csound audio synthesis language. Instrument development and prototyping is carried out with the main Cabbage IDE. Users write and compile Csound code in a code editor. If one wishes one can also create a graphical frontend, although this is no longer a requirement for Cabbage. Any Csound file can be run with Cabbage, regardless of whether or not it has a graphical interface. Cabbage is designed for realtime processing in mind. It is possible to use Cabbage to run Csound in the more traditional score-driven way, but your success may vary.

Cabbage is a ‘host’ application. It treats each and every Csound instruments as a unique audio plugin, which gets added to a digital audio graph (DAG) once it is compiled. The graph can be opened and edited at any point during a performance. If one wishes to use one of their Csound instruments in another audio plugin host, such as Reaper, Live, Bitwig, Ardour, QTractor, etc, they can export the instrument through the ‘Export instrument’ option.

http://cabbageaudio.com/
https://csound.com/

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FluidSynth ~ A SoundFont Synthesizer


FluidSynth is a real-time software synthesizer based on the SoundFont 2 specifications and has reached widespread distribution. FluidSynth itself does not have a graphical user interface, but due to its powerful API several applications utilize it and it has even found its way onto embedded systems and is used in some mobile apps.

Features:

  • Cross platform support (Linux, macOS and Windows to name a few)
  • SoundFont 2 support
  • SoundFont 3 support (vorbis-compressed SF2)
  • Realtime effect control using SoundFont 2.01 modulators
  • Playback of MIDI files
  • Shared library which can be used in other programs
  • Built in command line shell

FluidSynth

Website

QSynth ~ FluidSynth GUI Front-end

 

QSynth is a fluidsynth GUI front-end application written in C++ around the Qt framework using Qt Designer.

qsynth-screenshot1

Website
 

Bfxr ~ Sound Effects For Computer Games


Bfxr is an elaboration of the glorious Sfxr, the program of choice for many people looking to make sound effects for computer games.

Bfxr has moved in the direction of increased complexity and range of expression. All the buttons that you know and love are here, but there are some new things as well:

  • 5 new waveforms : triangle, breaker, tan, whistle, and pink noise.
  • 3 new filters : compression, harmonics, and bitcrusher.
  • Ability to lock parameters during mutation/randomization.
  • Expanded pitch-jumping abilities – good for arpeggiation effects.
  • Visualisation
  • Mixer
  • Keeps your sounds and mixes in persistant lists.
  • Can reverse synths
  • Ability to link directly to sounds

You have full rights to all sounds made with bfxr, and are free to use them for any purposes, commercial or otherwise.

Website

eSpeak ~ Open Source Speech Synthesizer


eSpeak is a compact open source Linux and Windows speech synthesizer for English and other languages. eSpeak uses a “formant synthesis” method. This allows many languages to be provided in a small size. The speech is clear, and can be used at high speeds, but is not as natural or smooth as larger synthesizers which are based on human speech recordings.

eSpeak is available as:

  • A command line program (Linux and Windows) to speak text from a file or from stdin.
  • A shared library version for use by other programs. (On Windows this is a DLL).
  • A SAPI5 version for Windows, so it can be used with screen-readers and other programs that support the Windows SAPI5 interface.
  • eSpeak has been ported to other platforms, including Android, Mac OSX and Solaris.

 

Website

NAudio ~ .NET Audio & MIDI Library


NAudio is an open source .NET audio and MIDI library, containing dozens of useful audio related classes intended to speed development of audio related utilities in .NET. It has been in development since 2002 and has grown to include a wide variety of features. While some parts of the library are relatively new and incomplete, the more mature features have undergone extensive testing and can be quickly used to add audio capabilities to an existing .NET application. NAudio can be quickly added to your .NET application using NuGet.

naudio_player_demo

NAudio demo project showing an MP3 file playing

Website
GitHub

PortAudio ~ Free Cross-platform Open-source Audio I/O Library


PortAudio is a free, cross-platform, open-source, audio I/O library.  It lets you write simple audio programs in ‘C’ or C++ that will compile and run on many platforms including Windows, Macintosh OS X, and Unix (OSS/ALSA). It is intended to promote the exchange of audio software between developers on different platforms. Many applications use PortAudio for Audio I/O.

Website