Oberheim OB 12, Руководство по эксплуатации

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OB 12
Z-Domain Synthesizer
178
time taken to reach the DECAY 2 value or the SUSTAIN value (if the DECAY 2 moment of time
is not present) from the moment when the maximum cut-off frequency (maximum level of the
ATTACK section) is reached. The values available range from 0 (DECAY 1 time annulled) to
100 (maximum time taken to reach DECAY 2 or SUSTAIN)
•
SUSTAIN
([SUSTAIN] of the FILTERS section)
: regulates the SUSTAIN level, i.e. the filter cut-off
frequency kept stable until the key is released (see also SUSTAIN TIME). The range of values
is from 0 (after DECAY 2 the cut-off frequency goes back to that set using the F.1 Freq. and
F.2 Delta parameter) to 100 (maximum variation of the cut-off frequency, until release of the
key).
•
RELEASE
([RELEASE] of the FILTERS section)
: sets the release time, i.e. the time the cut-off
frequency takes to reach the value set with the F.1 FREQ. and F.2 RATIO parameters. The
range of values is from 0 (the cut-off frequency goes back to that set with F.1 Freq. and F.2
Delta) to 100 (maximum period of time taken to return to the values of the cut-off frequency
set with the parameters mentioned above).
Thanks also to the display section which shows the envelope graph, the user can be informed
about both the envelope referred only to the ADSR parameters (graph with continuous line), and
the envelope referred to the Env. Depth, F.1 Freq. and F.2 Delta parameters (graph with dotted
line).
If the ADV-ENV folder is now selected, the user can display the second page relating to the
envelope to be applied to the filters. This video page comprises:
the parameters displayed are the following:
•
DELAY: sets a delay time from when a key is pressed to when the filter cut-off frequency
starts to be affected by the envelope, in a range of values from 0 (no delay) to 100 (maximum
delay).
•
DECAY BREAKP.
(Decay Breakpoint): sets the Breakpoint value for the Decay period, divided
into Decay 1 and Decay 2. The Breakpoint value specifies the cut-off frequency after which
Decay 2 will start, in a range of values from 0 (minimum cut-off frequency) to 100 (maximum
cut-off frequency).
•
DECAY 2: regulates the second period of time taken to reach the Sustain level by means of
the usual range of values from 0 (no Decay 2 section) to 100 (maximum time to reach the
Sustain level).
•
SUSTAIN TIME: regulates the Sustain time, i.e. the period of time in which the cut-off frequency
assumes a fixed value. If this period of time is less than the real time for which the key is
pressed, the cut-off frequency of the filters will decrease (or increase if envelope is inverted)
regardless of the status of the key (pressed / released). The range of values is from 0 (Sustain
section absent) to OFF (the cut-off frequency is no longer controlled, and thus remains
unchanged until the key is released).
This video page also shows the envelopes referred both to just the ADSR parameters (continuous
line) and to the Env. Depth, F.1 Freq. and F.2 Delta parameters (dotted line).