Befaco - i² Instrument Interface

Overview

The i² Instrument Interface has to be considered a practical tool for extracting voltages from an injected audio signal, e.g. to generate dynamic modulations by various control voltages and to generate triggers and gates. The module has a pre-amp and a band pass filter as well.

Details

The module consists of a number of circuits: first of all there's a pre-amplifier with big and small input jacks and a gain potemtiometer for setting the amplification. The pre-amp is followed by a band pass flter with adjustable center frequency and width for eliminating unwanted signal portions, like bassdrums which, due to their high energy mask other frequencies' level and cut a lot of dynamics from the envelope follower.

The pre-amplified and filtered signal is available at the audio out but is being sent simultneously to the other function blocks:

  • Envelope Follower follows the audio signal's amplitude changes- Three selectable velocity responses.
  • Envelope Regenerator: generates an Attack-Decay envelope from the audio signal; with adjustable time parameters.
  • Trigger Extractor: A comparator that produces a gate and a trigger when the audio signal exceeds a threshold. The gate remains high until the audio level drops below the threshold again.

connectors

pre-amp: 3,5mm and 1/4" inputs
bandpass filter: audio out
envelope follower: voltage output "follo"
envelope regenerator: voltage output "rege"
trigger extractor: trigger out, gate out

dimensions

3U Eurorack module, 11HP wide, 45mm deep
power consumption: 40mA @ +12V and 35mA @ -12V

Weight
0.25 kg
Article Number
BFi2

This item is discontinued or sold out and no longer available, please feel free to look for comparable new stuff in the following categories.