Capture

An analogue ADSR envelope generator in 9 HP. Four knobs set the attack, decay, sustain and release, a Manual Gate button fires the envelope by hand, and a lamp lights while the gate is active. The envelope leaves on two outputs at once, one as it is and one inverted, and a polarity button moves the inverted envelope from positive to negative voltages.

Key features

• Attack, decay, sustain and release, each on its own knob
• Gate input accepting +3 to +12 V, with a lamp showing the active gate
• Manual Gate button
• ADSR and inverted ADSR outputs, 8 V peak to peak
• Polarity button for the inverted output: positive by default, negative when pressed