ADDAC220 Dual Envelope Follower+

ADDAC System ADDAC220

The ADDAC220 is a stereo envelope follower that combines analog signal shaping with digital processing to extract dynamic CV and gate information from audio. Each channel features adjustable gain, clipping detection, and a slew-limited, smoothed CV output that responds with nuanced detail. A digital Savitsky-Golay filter ensures low-noise envelope tracking, while the Response Curve control mimics traditional envelope shapes (logarithmic/linear/exponential). With stereo or dual mono operation, multiple CV outputs (including inverted and averaged signals), and a gate output with threshold control, the ADDAC220 is both versatile and surgical in its utility—ideal for precise modulation extraction and dynamic signal tracking.

ADDAC220 Features

• Stereo or dual mono analog/digital envelope following
• Gain, offset, attack/decay, and curve controls for shaping
• Inverted and averaged CV outputs (+/-10V range)
• Gate output with threshold and visual indicators
• Built-in smoothing and dynamic range mapping
• 12-bit ADC with Savitsky-Golay filtering
• CV range up to 0–10V (or -10 to 0V inverted)