11 Wow and flutter
The module simulates two phenomena known from the physical medium:
Wow, a slow fluctuation of the playback speed, causing the pitch to move
up or down. And flutter, abrupt changes of the playback speed, resulting in
faster momentary increases of pitch.
WOW/FLUT is controlling these time effects. When the pot is at its 12
hours, the effect is disabled. Turning it to the left or right enables wow or
flutter, respectively.
11.1 Placement
There are three placement options for this effect, each with its distinct
behavior.
On the input – the effect will be applied to the signal before it enters the
delay. This is useful when using multiple heads placed in different positions
since the modulation at the time of their reading will vary.
On reading from tape – the effect will be applied when reading the signal
back from the tape. This is useful when using feedback, since each time the
signal passes through the tape it will get further modulated.
Both simultaneously – both of the placements are active. Default.
Hold the button while turning the WOW/FLUT knob to switch between the
input, read, and both placements.
12 Delay
The input signal gets recorded on an imaginary tape by a writing head, to be
then, after a set interval, played back by a reading head. See the figure 1.
Hold the button for 5 seconds to clear the entire tape.
12.1 Heads
There are four such reading heads, each controlled by four knobs (H). POSI-
TION sets the relative position in the delay. VOL controls how much of the
signal will be sent into the output, with PAN controlling the balance between
LEFT and RIGHT. FEEDBACK controls how much of the signal is fed back
to the beginning of the delay.
When the combined strength of all feedback gets too strong, the module
may enter into a feedback loop. To get out of this loop, reduce the feedback,
or use the tone filter.
When the signal written to the tape is too loud, it will not allow any feedback
to fit in. To allow stronger feedback, reduce the pre-amp or drive.
12.2 Speed
SPEED controls the velocity in which the imaginary tape loops around, or
in other words, the length of the delay. By default, this length is between
5 minutes and 10 ms. Turning this knob to the middle while holding the
button switches to a shorter range between 8 seconds and 10 ms, turning it
to the maximum switches to audio range between 14 Hz and 1.8 kHz.
Alternatively, tap the button four times to set the desired tempo. Similarly,
if a clock signal is detected in control input mapped to SPEED, it would set
the tempo, with the SPEED knob acting as a multiplier.
12.3 Impulse
The IMPULSE trigger output will fire in the pattern set through head positions.
It is synchronized with the tap-in or clock-in.
