Author: Tom Zicarelli

Slice//Jockey help

A compilation of Pd help screens.

Slice//Jockey is an interactive audio performance instrument

by Katja Vetter

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Click any of the screenshots to see a full size image.

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X-Y field

The x-y origin is in the lower left corner. In the x plane numbers increase from left to right. In the y plane numbers increase from bottom to top.

  • white: left slice unit
  • grey: right slice unit
  • black: global

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Notes on notes:

  • x: pitch low to high (independent of BPM)
  • y: rhythmic variation low to high

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Audio Settings

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 IO section

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Patterns and slices

Slice units left and right

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Global recorder

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Audio/video synthesizer with hacked VGA cables.

By James H. Connolly


A better tutorial (with warnings)  on building the cables, at CrackedRayTube, also by James Connolly with Kyle Evans:

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Max patch for controlling the system:

ep-341 Max/MSP – Spring 2015 week 13

Algorithmic composition and generative music – part 2


Reactive music

With reactive music, audio is the input. Music is the output. Music can also be the input.

from Wikipedia:

“Reactive music, a non-linear form of music that is able to react to the listener and his environment in real-time.[2] Reactive music is closely connected to generative musicinteractive music, and augmented reality. Similar to music in video-games, that is changed by specific events happening in the game, reactive music is affected by events occurring in the real life of the listener. Reactive music adapts to a listener and his environment by using built in sensors (e.g. cameramicrophoneaccelerometertouch-screen and GPS) in mobile media players. The main difference to generative music is that listeners are part of the creative process, co-creating the music with the composer. Reactive music is also able to augment and manipulate the listeners real-world auditory environment.[3]

What is distributed in reactive music is not the music itself, but software that generates the music…”

Ableton Live field recorder

Uses dummy clips to apply rhythmic envelopes and effects to ambient sound:

InstantDecomposer and Slice/Jockey

Making music from from sounds that are not music.

by Katja Vetter

InstantDecomposer is an update of Slice//Jockey. It has not been released publicly. Slice//Jockey runs on Mac OS, Windows, and Linux – including Raspberry-PI

Slice//Jockey help:

Slice//Jockey is written in Pd (PureData) – open source – the original Max.

By Miller Puckette

Local file reference

  • local: InstantDecomposer version: tkzic/pdweekend2014/IDecTouch/IDecTouch.pd
  • local: slicejockey2test2/slicejockey2test2.pd


A music factory.

By Christopher Lopez

Inception and The Dark Knight iOS apps:

As of iOS 8.2, Dark Knight crashes on load. Inception only works with “Reverie Dream” (lower left corner)

Running RJDJ scenes in Pd in Mac OS X

Though RJDJ is a lost relic in 2015. It still works in Pd. The example scenes used here are meant to run under libpd in iOS or Android, but they will actually work in Mac OS X.

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First, use Pd Extended. Ok maybe you don’t need to.

1. Read the article from Makezine by Mike Dixon

2. Download sample scenes from here: The link is under the heading “RJDJ Sources”

3. Download RJLIB from here:

4. Add these folders in RJLIB to your Pd path (in preferences)

  • pd
  • rj
  • deprecated

5. Now, try running the scene called “echelon” from the sample scenes you downloaded. It should be in the folder rjdj_scenes/Echelon.rj/_main.pd

  • turn on audio
  • turn up the sliders
  • you should here a bunch of crazy feedback delay effects

Note: with Pd-extended 0.43-4 the error message: “base: no method for ‘float'” fills the console as soon as audio is turned on.

Scenes that I have got to work:

The ones with marked with a * seem to work well without need for modification or an external GUI. They all have error messages) – and they really are meant to work on Mobile devices, so a lot of the sensor input isn’t there.

  • Amenshake (you will need to provide accelerometer data somehow)
  • Atsuke (not sure how to control)
  • CanOfBeats (requires accelerometer)
  • ChordSphere (sounds cool even without accelerometer)
  • Diving*
  • DubSchlep* (interesting)
  • Ehchelon*
  • Eargasm*
  • Echochamber*
  • Echolon*
  • Flosecond (requires accelerometer)
  • FSCKYOU* (Warning, massive earsplitting feedback)
  • Ghostwave* (Warning, massive earsplitting feedback)
  • HeliumDemon (requires accelerometer)
  • JingleMe*
  • LoopRinger*
  • Moogarina
  • NobleChoir* (press the purple button and talk)
  • Noia*
  • RingMod*
  • SpaceBox*
  • SpaceStation (LoFi algorithmic synth)
  • WorldQuantizer*

to be continued…

Random RJDJ links

Including stuff explained above.



I’m thinking of something:

ep-426 Interactive Video – Spring 2015 week 13

More analog video

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A scene from a sea otter video processed using ‘Premium Cable’ by BPMC

Not modular

Two weeks ago Christopher Konopka demonstrated modular analog video. This week we will explore analog video made from found objects and circuit bending.


Kinect is still your friend, especially if you use Windows.

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Kinect – revisited:

TV and CRT’s

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Jitter and OpenGL

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Claire Steeger wrote a new tutorial (with Max patch) called “Simple Intro to” Its shows several ways to modulate complex 3d shapes using audio and data.


Euphony – A webGL Midi file player

by Xueqiao Xu


I’m thinking of something: