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Mutable Instruments Marbles Quick Start Manual

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Marbles
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Summary of Contents for Mutable Instruments Marbles

  • Page 1 Marbles Random sampler...

  • Page 2: Installation

    About Marbles Marbles is all about randomness – generation of random events, or randomization of external CV/Gate signals. The module is organized as three sections: the t section gen- erates and processes clocks and triggers, the X section generates and processes voltages, and the DEJA VU section imposes structure, in the form of repetition, upon all the events generated by the two other sections.
  • Page 3 Marbles’ recipe for random music Start with a clock – generated internally or divided/mul- tiplied from an external clock signal. If required, add some jitter to it, from slight humaniza- tion to complete chaos. Split this randomized clock into two streams of random triggers to generate two contrasting rhythmic patterns complementing the main clock.
  • Page 5 Generator The t generator produces random gates by generating a jittery master clock (which is output on t ) and deriving from it two streams of random gates which are output on t and t Clock rate. 120 BPM at 12 o’clock. Clock range.
  • Page 7 DEJA VU section Whenever the module needs to make a random choice (for instance, to decide on the amount of jitter to apply on the next tick of its clock, or to generate a random voltage for one of its outputs), it queries the DEJA VU section. The DEJA VU section either recyles a previously generated random choice, or samples fresh random data from a hardware random source.
  • Page 9 Generator The X generator generates three independent random volt- ages output on X and X . They are clocked by the three outputs from the t section, or by a common external clock. Output voltage range. 0 to +2V, 0 to +5V or -5 to +5V. Probability distribution width and shape.
  • Page 11 All channels follow the settings on the control panel. follows the control panel, while X and X take opposite values. For example, if STEPS is turned fully CW, X and X will be smooth while X is quantized to the root note and its octaves.
  • Page 12 Shaping voltage distributions with SPREAD and BIAS SPREAD BIAS...
  • Page 13 The pink histogram represents the distribution of possible output voltages: the tallest bar corresponds to the most likely outcome. The teal oscillogram is an example of output voltage sequence.

  • Page 14: Selecting A Scale

    STEPS Quantizer The STEPS knob progressively eliminates notes from a chro- matic scale: first to reveal an interesting scale, then to mask all notes except the most salient ones in this scale. The example below is for a C-major scale (first factory preset). Unquantized Chromatic scale STEPS...
  • Page 15 Preset scales Slow blink Fast blink Major Gamelan (Pelog) Minor Raag Bhairav Pentatonic Raag Shree Programming a scale Connect the CV and Gate outputs of a keyboard or MIDI interface to the SPREAD and CLOCK inputs respectively. Hold the external processing mode button for 2 seconds.

  • Page 16: Tips And Tricks

    3-note sequence independently from the other, creating polyrythmic effects. • Self-patching is a rewarding technique with Marbles! In particular, the Y output provides a useful slow modulation source for randomizing the other parameters of the module.