Eventide Eclipse, User Manual

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Eclipse User Manual
Eclipse User Manual Page 36 of 66 Release 4.0.1
However, if you set
(T_DELAY1)
to
off
, then the actual delay time will
be determined solely by
(DELAY1)
in terms of milliseconds. If you want
all of the parameters in the Eclipse to ignore the tempo, set
SETUP
TEMPO (TAP SRC)
to
Off
.
Now that you have that straight, lets continue. The Eclipse can calculate
delay times in terms of the tempo, as described above,
or it can calculate
them as the absolute time between two taps of the
TAP
key (useful for
live situations). Select
PARAMETER
page 2
<EDIT MOD> TTIME (MODE)
to select between
systemtempo
and
longdelaytap
. With
(MODE)
set to
systemtempo
, everything behaves as we’ve described so far.
On the other hand, with
(MODE)
set to
longdelaytap
, every “
T_DELAY
”
and “
T_LOOP
” parameter derives its delay time from the interval be-
tween successive taps of the
TAP
key.
With
(TTYPE)
set to
update
, the first of two taps marks the beginning of
an interval, and the second tap defines the end of the interval. You can
watch the interval grow between the taps at
(RUN)
and check out the re-
sulting delay time at
(DELAY)
. A third tap starts the interval over at
0
and
a fourth tap defines the end of the new interval.
With
(TTYPE)
set to
climb
, the first of two taps begins increasing the
existing interval from the point that it left off, and the second tap defines
the end of the interval. Again, you can watch the interval grow between
the taps at
(RUN)
and check out the resulting delay time at
(DELAY)
.
To reset the interval with
(TTYPE) climb
, select an external modulator
such as
pedal 1
under
EXT_RESE
. Turn to page 45 for details on setting
up external controllers.
Envelope-following Parameters: SENS, ATTACK, and DECAY
Many algorithms involve parameter modulation via an “envelope follower.” An envelope follower tracks
the level of the input audio and modulates some parameter according to that level. Envelope filters are a
prime example of this sort of modulation: the envelope follower modulates the cutoff frequency of a reso-
nant filter. In the Eclipse, envelope followers frequently modulate LFO rates, so that as the input signal
gets louder, the LFO rate speeds up.
(SENS)
adjusts the sensitivity of the envelope follower. Use lower
values for quieter input levels and higher values for louder input levels.
Short values of
(ATTACK)
and
(DECAY)
track the envelope tightly, while
longer values smooth out the response.
LFO Parameters
LFOs (low-frequency oscillators) abound! An LFO produces a slowly
alternating signal that modulates some parameter or another.
(RATE)
and
(T_RATE)
determine how fast the signal oscillates.
(FMRATE)
and
(T_FMRATE)
determine to what degree the speed of oscillation is af-
fected by the envelope follower (i.e., the loudness of the input audio).
(SHAPE)
determines the shape of
the alternating signal. For shapes such as
triangle
and
square
the
(DUTY)
parameter “shifts” their shape.
Via
(DUTY)
,
triangle
waves can vary between sawtooth and ramp-shaped, and
square
waves can change
their pulse length relative to the
(RATE)
.