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noise + s&h

Interface

  1. T&H/S&H signal input
  2. tracking gate input
  3. pink noise output
  4. blue noise output
  5. sampling trigger input
  6. T&H/S&H signal output
  7. manual tracking touch pad

This module contains two independent sections: a noise generator and a track & hold / sample & hold circuit.

Noise generator

The noise generator provides two simultaneous outputs with different spectral characteristics:

  • Pink noise — has equal energy per octave, resulting in a warmer, more natural sound. Commonly used for audio testing, ambient textures, and as a modulation source.
  • Blue noise — has increasing energy at higher frequencies, producing a brighter, more hissing character. Useful for adding high-frequency content or as a different flavor of random modulation.

Track & Hold / Sample & Hold

This section can operate in two modes depending on how the gate and trigger inputs are used:

Track & Hold (T&H)

When a gate signal is applied to the tracking gate input, the circuit continuously follows (tracks) the input signal while the gate is high. When the gate goes low, the output holds the last tracked voltage. This is useful for capturing a voltage at a specific moment determined by the gate signal.

Sample & Hold (S&H)

When a trigger is applied to the sampling trigger input, the circuit instantly samples the current input voltage and holds it until the next trigger. This creates the classic "stepped random" effect when used with a noise source, or can be used to quantize continuous signals in time.

A touch pad is provided for manually injecting a track gate, allowing hands-on interaction with the T&H function.

Power consumption

420 mW