Justin Ehrlichman releases JDrummer – Free Open Source Drum Plugin for Windows and Linux VST3

By sampler  On  

Justin Ehrlichman has released JDrummer, an open source VST3 drum plugin for Windows and Linux built with the JUCE framework.

JDrummer features SoundFont-based drum kits, a comprehensive groove library with tempo-synced playback, a composition tool, and an intelligent Groove Matcher that analyzes audio to find matching drum patterns.

Features

Drum Pads

  • 16-pad drum grid with velocity-sensitive playback.
  • Multiple SoundFont kits – Ships with 29 drum kits including:
    • Standard acoustic kits (Standard, Room Drums, Power Drums, Jazz Drums).
    • Electronic kits (808, Electronic Drums, Dance Drums, House Kit).
    • Specialty kits (Orchestral Percussion, Brush Drums, NIN Drumkit).
  • Per-pad controls:
    • Individual volume adjustment (0-100%).
    • Pan control (left/right).
    • Solo and mute options.
  • Dynamic kit loading – Add your own .sf2 SoundFont files to expand your library.

Grooves Browser

  • Extensive groove library organized by category:
    • Basic Beats.
    • Break Beats.
    • Buildups.
    • Double Bass Beats.
    • Fills.
    • Half Time Beats.
    • OffBeats.
    • Swing Beats.
    • Tom Beats.
  • Tempo-synced playback – Grooves automatically sync to your DAW’s tempo.
  • Preview functionality – Audition grooves before adding them to your project.
  • Drag and drop – Drag any groove directly into your DAW as a MIDI clip.
  • Bar selection – Choose how many bars of a groove to use (1-16 bars).

Composer

  • Build complete drum parts by combining multiple grooves.
  • Visual timeline showing your arrangement.
  • Reorder and remove items from your composition.
  • Export as MIDI – Drag your entire composition to the DAW.
  • Loop playback for previewing your arrangement.

Groove Matcher

An intelligent feature inspired by professional drum software that helps you find the perfect groove for your music:

  • Audio analysis – Drop any audio file (WAV, MP3, FLAC, OGG, AIFF) to analyze its rhythm.
  • BPM detection – Automatically detects tempo using the miniBPM library.
  • Smart filename parsing – Extracts BPM from filenames (e.g., “beat_120BPM.wav”).
  • Pattern matching – Analyzes rhythm patterns and finds matching grooves from your library.
  • Similarity scoring – Shows match percentage for each suggested groove.
  • Preview with audio – Play back the matched groove alongside your original audio.
  • Automatic composition – Best match is automatically added to the composer.
  • Seamless workflow – Found the perfect match? Drag it straight to your DAW.

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