{"id":2159,"date":"2017-02-27T16:19:18","date_gmt":"2017-02-27T21:19:18","guid":{"rendered":"http:\/\/pugix.com\/synth\/?p=2159"},"modified":"2017-02-28T14:14:08","modified_gmt":"2017-02-28T19:14:08","slug":"2hp-rnd-module","status":"publish","type":"post","link":"https:\/\/pugix.com\/synth\/2hp-rnd-module\/","title":{"rendered":"2hp Rnd module"},"content":{"rendered":"

\"\"<\/a>This 2hp module<\/a> is a random stepped voltage and gate generator.\u00a0 I’m making a special post about it, because I think it has a unique design.\u00a0 More needs to be said, than the following quote by the manufacturer.<\/p>\n

Rnd is a random voltage generator and random gate source with an internal clock. The output is a quantized random voltage between 0V and 10V. The attenuator control provides fine-tuning of the random voltage.<\/p>\n

This allows for a musically useful range to be defined. In addition, random gates are emitted from the gate output with an associated probability control while externally clocked.<\/p><\/blockquote>\n

Random, stepped voltages are typically generated in a modular system by patching three different modules together:\u00a0 a noise source, a clock, and a sample and hold (S&H).\u00a0 It is also typical to combine these features into a single module.\u00a0 Sometimes a slewing circuit is added for portamento.\u00a0 The Ultra Random Analog<\/a> module combines all of these.\u00a0 See the BugBrand Noise Crusher<\/a> for another example.\u00a0 And also see my Triple S&H<\/a>.\u00a0 There, I’ve linked to S&H modules in three different formats!<\/p>\n

Sample and Hold theory<\/h4>\n

A Sample and Hold circuit is usually designed to be a control voltage generator (although at high clock speeds, can work as a bit crusher).\u00a0 It takes two inputs and produces one output.<\/p>\n

\"\"<\/a><\/p>\n

One of the inputs is a varying signal of any waveform and frequency, typically a white noise source.\u00a0 The other input is a clock trigger or gate.\u00a0 Whenever the trigger input receives a gate, i.e. a voltage crossing a threshold, at that moment the value of the signal input is transferred to the output and is held without changing, until the next trigger is received.\u00a0 Some S&H circuits can function as a Track and Hold, meaning that in one state of the gate the input is followed (tracked) and held in the other, as shown in the above diagram.<\/p>\n

2hp Rnd features<\/h4>\n