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ADDAC System announces 106 T-Noiseworks Eurorack module

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ADDAC System has announced the latest synthesizer module in its T-Networks series. The 106 T-Noiseworks features a straightforward 4-voice module with frequency and decay controls for each voice.

In addition to these voices ADDAC System has included an additional noise source in the design, and created two different circuits that explore the timbre of a T-Network when used to filter noise.

ADDAC106

With two different circuits in this module, voices (1) to (3) have a pre-VCA T-Network filter, while on voice (4) the T-Networks filter is applied post-VCA. Further, at each voice input stage, there is a switch that controls which type of input to use. Since this signal is used to control an internal VCA, the type of defined setting is important:

  • Trigger: Any incoming CV will be converted into a 1ms trigger as soon as it crosses its fixed threshold.
  • Mute: This disconnects the incoming signal, effectively muting the voice.

  • Envelopes: This can be used with CV sources as well as gate sources, and simply follows the input signal.

This incoming signal will then be processed by a slew circuit which adds a decay factor — allowing the user to set the “Tail” of each voice. The Trigger mode is mostly dedicated for percussive sounds, while the Envelope mode is open to any external envelope control and able to control noise swooshes, swirls, crackles and pops simply out of T-Networks filtered noise. Audio inputs are also welcomed to be used as a Trigger/Envelope input. In fact the sonic results of using this method can be very surprising.


The first (3) voices feature a Timbre selector switch. 
In Snare mode all frequencies coming from the T-Networks filter pass thru to the output. 
In Hat mode, it adds a high pass circuit which removes the mid/bottom frequencies (characteristic of the snare strike) creating a higher spectrum output that is sonically closer to a Hat timbre.


All of these (3) voices are also differently tuned from each other to offer more sonic options. Voice (4) meantime is closer to a typical T-Networks circuit, but this time a peculiar one where the noise is gated by the VCA and then sent through the T-Networks filter.

The 106 T-Noiseworks module will be available mid-April for 160 EUR. It will also be available as a full DIY kit.

More information: ADDAC System

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