GrandOrgue
GrandOrgue is a free, open source sample-based pipe organ simulator that plays recorded organ sample sets from a MIDI keyboard or console.
GrandOrgue is a free and open source virtual pipe organ software for Windows, Linux and macOS. It is designed to simulate a pipe organ from recorded samples of real pipes, providing a realistic experience to the user. GrandOrgue is written in C++ and uses the wxWidgets toolkit together with the RtAudio and RtMidi libraries. The project was earlier hosted on SourceForge and is now developed on GitHub.
Features
• Realistic sound generation: GrandOrgue plays the recorded attack, loop and release samples of every pipe to accurately simulate the sound of a real pipe organ.
GrandOrgue provides a powerful and realistic organ simulation with a user-friendly interface.
• Organ sample sets: organs are loaded from sample sets described by Organ Definition Files (ODF); many free and commercial sets are available.
• Multi-channel audio output: GrandOrgue can route audio groups to several channels and audio devices, for stereo or multi-speaker setups.
• Support for MIDI devices: GrandOrgue can be used with MIDI keyboards and other controllers, allowing users to control their virtual organ with real-world hardware.
• Graphical console: each organ is shown as a console with stop knobs, manuals, couplers and combination buttons that can be used with the mouse.
• Demo organ: GrandOrgue ships with a small demo sample set, so users can try it before downloading larger organs.
• Extensive customization options: GrandOrgue provides settings for temperaments, tuning, polyphony, sample loading and memory use, allowing users to tailor the instrument.
• Convolution reverb: a built-in convolution reverb can add the acoustics of a room to dry sample sets using an impulse response file.
• Recording: GrandOrgue can record the audio output to WAV files and send the played notes to a MIDI recorder output.
• Multi-language support: GrandOrgue is available in English, German, French, Italian, Spanish, Dutch, Polish, Russian and other languages.
• Free and open source: GrandOrgue is free and open source software, licensed under the GNU General Public License version 2.
Audio interface supported by RtAudio (ASIO, WASAPI)
MIDI keyboard or organ console recommended
PROS
Supports a wide range of organ console hardware.
Customizable, offering multiple temperaments and tunings.
CONS
Support is provided only through community forums.
Settings dialogs can be complex for new users.
