The Intellijel Noise Tools 1U is a 22 HP utility tile for the Intellijel 1U row format found in Palette, 4U and 7U cases. It combines a clock and random pulse source, analog pink and white noise, analog sample/track and hold, and analog slew. It suits anyone who wants noise, randomness and clocking in a 1U row and would rather keep 3U space for other modules.
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Pulse source: Clock mode runs from one pulse every 15 seconds up to audio-rate pulses at 2.5 kHz. Random mode sets the chance that each internal 10 ms pulse passes.
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Analog noise: separate pink and white noise outputs with an accurate spectrum.
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Sample/track and hold: analog circuit with very low droop and a switch to choose between sample and track modes.
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Slew: adjustable from almost instant to about 1 second for a 5 V change.
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Normalled signal flow: each block feeds the next from left to right, and patching an input breaks that link.
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Bipolar LEDs: the Sample In and Slew Out LEDs show green for positive and red for negative voltage.
Because the three blocks are normalled, the module works with no patch cables at all. The internal pulse clocks the sample and hold, which samples white noise when Sample In is empty, and the held voltage then passes through the slew. The result is stepped or smoothed random CV for filter cutoff or oscillator pitch. Patch a Trig input, a source into Sample In, or a voltage into Slew In to take over any stage.
Beyond random modulation, the noise outputs work for wind, waves, snares and breathy textures. You can sample a slow LFO to get repeating arpeggio-like patterns, or sample an audio signal at different clock rates for bit-crush-style effects. Patch a keyboard or sequencer pitch CV into Slew In and the slew becomes portamento. At low settings Random mode gives sparse, Morse-code-like gates, and at high settings it moves towards static.