Rumori
Multi-Color Noise Generator, Fixed Filter Bank and 4-Channel Random Voltage Generator

Rumori is a 18-HP Multi-Color Noise Generator, Fixed Filter Bank and Random Voltage generator. While this type of module has been standard in modular synthesis since its inception, Rumori adds ‘overheard’ noise to its color palette. In addition to an internal white noise generator that passes through various filters to loosely approximate part of the color-noise spectrum, I’ve added an internal condenser microphone as well as an RF receiver circuit to capture those environmental noises that we tend to tune out or ignore. These added features will not only let you capture new and site-specific textures, but let the overheard sound of the physical act of your patching drive the generation of random voltages through the module’s Sample and Hold circuit.

The four random voltages are all interrelated and can be quantized and ‘programmed’ to output variations in timing and intervals in sync to the originally produced voltage.

I/O:

• Mix Out that outputs the entirety of the palette of noises.

• Clock Out that outputs the internal clock or passes through the External Clock for easy synchronization with other modules.

• Audio In that takes an external audio input and bypasses the white noise generator. This means that every filter will filter this in-coming signal.

• External Clock In bypasses the internal clock for more varied control.

• 4x Random Voltage Outputs that provide a set of interrelated random voltages. The DAC Spread and Quantize knobs determine the relations between the four (more information on these relations will be provided soon).

Filters (subject to change, can be customized):

• LPF with corner frequency at 330 Hz

• HPF with corner frequency at 4.2 kHz

• SVF with corner frequency at 768 Hz

Rumori is in its second prototype. There are still a number of corners to smooth out, but is coming along nicely and should be wrapped up in the next couple of months.