The unit designed for generating and processing modulation signals includes a Sync LFO, a White Noise Generator, a Sample & Hold, a VC Glide, and a VCA & Inverter or Ring Modulator circuits. These submodules are internally pre-wired and closely integrated, but the internal connections can be broken using the front-panel jack connectors, allowing each section to operate independently.
The Sync LFO simultaneously generates two distinct waveforms: triangle (TRI) and square (SQR). These are available on separate outputs, along with a third output offering a selectable waveform. The module features RESET, SYNC, and CV inputs. The CV input can be used to control the waveform shape, the LFO frequency, or its divider. The frequency range is adjustable between 0.05 Hz and 50 Hz. The TRI waveform can be continuously morphed from SAW to RAMP, while the SQR waveform’s pulse width is also adjustable.
The output of the Sync LFO is routed to the input of the VCA & Inverter, enabling control over the LFO’s modulation depth. Additionally, the VCA can operate in Ring Modulator mode. The
Sync LFO also includes a SYNC output, whose frequency can match the LFO frequency or be a multiple or division of it. This output drives the TRIG input of the Sample & Hold circuit, with its behavior configurable via the Hidden Parameter menu.
The analog White Noise Generator is directly connected to the input of the Sample & Hold. The output of the Sample & Hold is then routed to the input of the VC Glide. The VC Glide allows adjustment of both the glide time and the amount of control voltage (CV) applied.
Module features of ASR401 MODULATION TOOLS:
Block diagram of ASR401 MODULATION TOOLS:
Owner’s manual:
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