JudahZone

An open source GrooveBox (mixer/effects/looper/sequencer) written in Java for the Jack realtime sound system. (https://jackaudio.org/)

Use the built-in Drums, Synths and Loopers and/or hook-up your own guitars, mics and synths. All audio channels have separately controlled internal Gain, EQ, Hi/Lo Cut, Chorus, Overdrive, Reverb, Delay, Compression, Stereo panning, Automation, a Spectrometer, an IR CabSim and a pair of LFOs. Loops may be synchronized for different song lengths and structures. A MIDI sequencer and feature-rich editor is provided consisting of 4 drum tracks and unlimited piano rolls. The sequencer generates chords, arpeggios and bass lines from ChordPro files. The sample player holds 8 loops/one-shots and 32 drum samples (8 samples per drum track). Melodic tracks may be played through external gear or through TacoSynth, a built-in subtractive synthesizer with the regular gamut of wave shapes, envelopes, resonant filters, detuning/harmonics and presets. Also included: a song editor, sheet music and chord views, guitar tuner, RMS/spectrogram, lossless audio recording and MIDI routing/clock support. The following controllers are integrated in the live system: Akai MPKmini, Korg NanoPad2 and Kontrol2, Line6 FBV Shortboard, Jamstik MIDI guitar, an old Arturia BeatStep, a Behringer Crave synth and their UMC1820 digital interface. Performance material is stored in a separate project: https://github.com/jeffmasty/Setlist Some live looping: https://www.youtube.com/user/judahmu/videos

Prerequisites

• Java 21 or newer
• Maven 3.8+
• Jack Audio
• a2j
• FluidSynth
• songs/samples/presets https://github.com/jeffmasty/Setlist

Build

Recommended (build from the aggregator meta-zone root):

1. Clone the aggregator and enter it:

   git clone https://github.com/jeffmasty/meta-zone.git
   cd meta-zone

2. Build the JudahZone module (produces the shaded jar and copies the final JudahZone.jar to the JudahZone project root):

   mvn -pl :JudahZone -am -DskipTests clean package

   Alternative: build only inside the JudahZone module (works if ../meta-zone/pom.xml is present):

   cd JudahZone
   mvn -DskipTests clean package

Artifacts

• Slim jar in module target: JudahZone/target/ (e.g. JudahZone-<version>.jar)
• Shaded jar in module target: JudahZone/target/ (e.g. JudahZone-<version>-shaded.jar)
• Copied full jar at module root: JudahZone/JudahZone.jar (ready to run)

Run

From the JudahZone module directory (or point to the copied JudahZone.jar):

cd JudahZone 
java -jar JudahZone.jar

Notes

• JACK server must be up and running.
• The app launches a2jmidid and Fluidsynth.
• App ties with Setlist project (https://github.com/jeffmasty/Setlist)
  It defines guitar, mic, bassSynth ports and uses them in Songs Contains DrumKits, impulse responses, chords, sheet music and samples
• Additional modularization coming soon...

Credits

JNAJack (https://github.com/jaudiolibs/jnajack) provides crucial Java bindings to the Jack sound system without which this project wouldn't be possible.

Delay, MonoFilter, FreeVerb, Chorus and the 'Smith' OverDrive gratefully adapted from Neil C Smith's JAudioLibs. Additional Overdrive algorithms ported from JUCEGuitarAmpBasic.

Compressor ported from Rakarrack.

Filters/EQ ported from JackIIR.

Using TarsosDSP for FFT, audio file I/O and guitar tuner.

TacoSynth created by combining Jack-Oscillator with MusicSynthesizer.

SongPro.org adapted to process ChordPro files.

Racman sequence provided by ybalcanci

A GUI is starting to come together: