180

The Buchla 100 series' dual attack generator (1960s), drawn in its San Francisco Tape Music Center panel: "two independent units produce envelope control voltages initiated by pulses. Attack time is variable from .002 to 1 second; decay time from .002 to 5 seconds; duration from .002 to 5 seconds. Duration may be optionally controlled by trigger pulse length" (the 100 series catalogue). Each unit has a red trigger input, two black outputs, ATTACK TIME, DECAY TIME and NOTE DURATION knobs and a switch for its duration.

Key features

• Two envelope generators started by pulses
• Attack to 1 s, decay and duration to 5 s
• Duration set by its knob or by the trigger pulse's length