Time-Based And Bpm Envelopes; Bpm Envelopes; Envelope Repeat - E-Mu ProteusX Operation Manual

6 - Voice Editor / Synthesizer Level
Amplifier, Filter & Auxiliary Envelopes

Time-based and BPM Envelopes

Envelope times can be time-based or BPM-based. Time-based envelopes have an
absolute time setting, such as 1 second. BPM-based envelope times are divided down
from the Master Tempo setting on the Multisetup page. The Master Tempo scales the
time of the BPM-based envelope segments.
BPM times are displayed in musical time intervals where possible. For example, if you
set the attack time to be 1/16, the attack time will last exactly one sixteenth-note at the
master tempo.

BPM Envelopes

BPM envelopes are controlled by the Master Tempo (located in the Multisetup window).
The Master Tempo rate scales the time of the BPM envelope segments. The Master
Tempo can also be derived from an external MIDI clock to synchronize the envelope
times with external sequencer or arpeggiator tempo changes. See note->.
= Initial Setting
= Increase Master Tempo
= Decrease Master Tempo

Envelope Repeat

The Envelope Generators can also be made to repeat. When the envelope repeat
function is On, the Attack (1&2) and Decay (1&2) stages will continue to repeat as long
as the key is held. As soon as the key is released, the envelope continues through its
normal Release stages (1 & 2).
level
time
Key Down
The diagram above shows how the looping envelopes work. When the key is pressed the
envelope goes through its regular Attack 1, Attack 2, Decay 1 and Decay 2 stages. In non-
looping mode, the envelope would hold at the end of the Decay 2 stage until the key
was released. In looping mode however, it jumps back to the Attack 1 stage and repeats
the first four stages. It continues to loop through these four stages until the key is
released where it immediately jumps to the Release 1 stage.
82
BPM Envelopes
Repeat Re..
Key Released
E Note: The master
tempo can be set
internally using the
tempo control in the
Multisetup window, or
controlled from an
external MIDI clock.
Internal/External clock
selection is located in the
Preferences dialog box.
Only the Filter and
E
Auxiliary Envelopes have
the repeating feature.
Proteus X Operation Manual