Ninjas 2

a 'Clearly Broken ™️' Sample Slicer

Rewrite of Ninjas, a sample slicer audio plugin. This plugin uses the DPF for the creation of audio plugins in lv2 and vst2 formats. A stand alone jack app is also compiled

Goal:

Easy to use sample slicer, quick slicing of sample and mapping slices to midi note numbers. The target platform is Linux.

Intended usage:

Primarily targeted at chopping up loops or short ( ≈ 10 - 20 seconds) samples. Think drum loops, vocal chops etc. Currently there's no limit on imported sample lenght. User can play the slices using midi notes and change the pitch with midi pitchbend.

Features:

• Implemented:

  • load samples in audio formats as provided by libsndfile
  • load mp3
  • highlight slice when midi note is received
  • maximum of 128 slices
    • slices 0 to 67 are mapped to midi note 60 to 127
    • slices 68 to 127 are mapped to midi note 0 to 58
  • slices can me snapped to onsets as detected by aubio
  • each slice has ADSR
  • each slice has 4 playmodes :
    • one shot forward
    • one shot reverse
    • loop forward
    • loop reverse
  • pitching of samples (+/- 12 semitones) via midi pitchbend
  • user editable slice start and end points
    • note: slices can not overlap
    • dragging the top marker edits both start and end point, keeping the slices continious
    • dragging the bottom markers edits the the start or end point of a slice.
  • programs : store and retrieve up to 16 configurations of slices
    • normal click restores state
    • shift click copies current state to new location
  • play marker in waveform display
  • add/remove slices in waveform display : double click within 10 px of slice start/end to add or remove slice

• To be implemented:

  • exponential curves in ADSR
  • adding a bar:beat:ticks ruler for easier lining up slice points

• Possible features

  • timestretch and pitch samples using rubberband
  • overlay slice info on slices in waveform display
  • resizable user interface

Build instructions

Dependencies

• libgl1-mesa-dev
• libx11-dev
• libsndfile1-dev
• libsamplerate0-dev

If you want a standalone jack binary install either libjack-dev or libjack-jackd2-dev

git clone --recursive https://github.com/rghvdberg/ninjas2.git
cd ninjas2
make

There is no make install, binaries will appear in /path/to/ninjas2/bin/, just copy the binaries to a appropiate location.

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