STG Soundlabs Envelope Generator

This STG module can be used as a DADSR or AHDSR envelope, a Trapezoid generator and a “Pyramid Blaster”. Thanks to four different modes of operation, including two loop modes, the circuit is extremely versatile. In addition, four time-ranges are available. Two envelope voltages are emitted simultaneously.

The STG Envelope Generator can create a wide range of simple to complex CV signals. The core features at a glance:

Three envelope types:

• DADSR or AHDSR operation reminiscent of the 911.
• Trapezoid mode as known from classic EMS synthesizers.
• Pyramid Blaster (ADSAR or DASAR)

Variable curve shape

Two envelope voltages are emitted simultaneously

Four modes of operation:

• Hold: The envelope will move to the sustain stage and remain there until the signal at the trigger input drops to 0 V.
• Trigger: The envelope will move through all stages after receiving a trigger signal.
• LFO A: Free-running loop mode, a signal at the trigger input resets the envelope.
• LFO B: The envelope is looped as long as a gate signal is present at the trigger input.

Four time-ranges:

• X.1, X1 and X10: Absolute time values with ranges of one second, ten seconds and 100 seconds.
• Sync: All time values are synchronized to a clock signal, which can be fed to the module via the STG Clock Bus.

CV inputs for all envelope stages and the curve characteristics

Gate outputs for all envelope stages