Dual Attack / Release Envelope Generator / Eurorack / PCB & Front Panel

Eurorack Dual (Attack/Release) Envelope Generator

PCB and Front Panel

• Format: Eurorack

• Size: 10HP
• Skill Level: Intermediate

This module is designed to shape the rising and falling edges of an incoming gate signal, creating a smooth, adjustable envelope. It offers two envelope modes:

• Fast/Short: Ideal for percussive sounds and rapid envelope changes.
• Slow/Long: Perfect for sustained sounds and gradual envelope decays.

Key Features:

• Adjustable Attack and Release Times: Four electrolytic capacitors (C1, C2, C3, C4) control the attack and release times.
  • Faster Attack: Increase the capacitance of C1 and C3.
  • Slower Release: Increase the capacitance of C2 and C4.
• Gate-to-Trigger Converter: For shorter envelope generation, especially useful with sequencers lacking gate length adjustment.
• Connectivity: Trigger out is connected to gate 1 input and gate 1 input is connected to gate 2 input via switched jack sockets. A single gate or trigger signal can trigger both envelope generators.
• Flexible Input Configuration: Jack switches allow easy overwriting of internal connections with external gate or trigger signals.

Recommended Capacitor Values:

• C1 and C3: 1uF (for faster attack)
• C2 and C4: 22uF (for slower release)

Note: Experimentation with different capacitor values can yield a wide range of envelope shapes and timbres.

• Important correction: Please use B100K pots for attack (Labeled 10K on the PCB)

• Documents