4ms Dual Looping Delay, Руководство пользователя

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Buffer Clear
When using the DLD with Feedback up and long loop times, it can take a while for the sound to die
out after the input signal is muted. This is, of course, a very nice and useful effect, but if you find
yourself needing to clear the memory quickly you can do so by holding down
Reverse and Infinite
Hold for two seconds. The sound will cut out briefly while the memory is cleared and the lights will
flash. Let go of the buttons and the buffer for that channel will be clear. Each channel has its own
buffer, and can be cleared independently of the other.
Why do I hear something I played a long time ago? Notes on the nature of Looping Delays
When Infinite Hold is off, the Wet signal (i.e. whatever's being output from the Send jack) is continuously recorded into
memory, going back for about three minutes (2:54 to be exact, which is the amount of each channel's memory). This means
that the results of every knob you twist and every bit of CV you input is being recorded into memory
*
. Let's say you're playing
a melody into the DLD with a nice rhythmic echo. If, for example, you change the Time parameter to make triplets for a
moment, then switch back to eighth notes, then maybe bring Feedback up to make a “bloom”, then pull down Delay Feed to
cut the audio out, etc... all of this will be recorded into memory. If you think in terms of the metaphor of a tape loop, then it's as
if your whole session is being recorded onto the loop.
Normally you won't have to think about this: the DLD operates “as you think it should”, overwriting whatever it recorded 2:54
ago with what you're playing now. But in some special circumstances, you can access this old memory: Windowing large
chunks in
Infinite Hold Mode is the primary method whereby you might hear some sounds that were recorded onto the “tape
loop” several minutes ago. This can be surprising! But it also can be very useful.
Applications
Sound on Sound Looping #1
This is a great patch for long loops. Set a long gentle clock speed (at least 1 second
between taps). The diagram on the left shows how to patch this for Channel B-- once you
master it, try patching both channels A and B and using the Out A mix jack for dual loops!
Turn Time B knob to 16 (or something slow). Turn Feedback B to 100%. Turn Delay Feed
B to 0%. Turn Mix to 50% (or to taste). Now run audio into In B . Try running a melody or a
percussive sequence or an evolving drone, perhaps.
Here's the trick: Patch a manual CV source into the Delay Feed B CV jack. It can be a
Pressure Points, or an FSR pressure output, or perhaps an envelope output that's
triggered manually. When you press on the Pressure Points or FSR, you will bring
up the
Delay Feed parameter which causes audio to be recorded onto the loop.
Since Feedback is at 100%, the loop is infinite and everything you lay down will
remain (but take care to keep your levels not too hot or else you will eventually get
clipping)
A variation is to use the Send B jack for the loop output. Then set the Mix knob to center
and use the Out B jack to monitor the incoming audio
Sound on Sound Looping #2
In this variation, you can use one pressure pad to bring in sound, and another to clear the
loop, or fade it down. This requires a module that can invert and offset a CV signal, such as
the 4ms SISM, the Makenoise MATHS, or any number of CV utility modules.
Patch the previous patch. Then turn
Feedback B down to 0%. Patch a second manual CV
source into the 4ms SISM (or other utility module). Turn the SISM's Scale knob all the way
down to – (invert), and turn the SISM's Shift knob up to about 2:00. Patch the SISM
channel's output to the DLD's
Feedback B CV jack.
Now you can press on the “record” pad like in the previous patch to lay down new material.
But now you can also press on the “clear” pad to fade out material from the loop.
You can even press on both pads at the same time to replace loop material with
new material.
What's happening in this patch is that the SISM is turning the 0V to 5V (or 8V or
whatever) signal from the pad module into a 5V to 0V signal. So, the SISM will
output around 5V if you are not pressing on the manual pressure pad (no CV signal). This
means the DLD's
Feedback will be 100%. As you press on the pad and increase the voltage
from the pad module, the SISM will decrease its output voltage, which decreases the
Feedback parameter. When Feedback is low, material from the loop fades away.
Note that if your loop is not looping at 100%, then the SISM's Shift knob needs to be turned
up a bit. This insures at least 5V is coming out of SISM when nothing is being input.
Hint: Turn Infinite Hold on for one channel, to create a “base layer”, and use the other
channel as a Sound on Sound loop to make a dynamic “middle layer”. Use the Dry signal as a “top layer”.
*except for the Wet/Dry mix as set by the Mix knob. Note that the CV itself is not being recorded, rather the audio that results from the CV.
8
+
Input
Signal
Output
Pressure pad
(to fade a new sound into the loop)
Input
Signal
Output
Pressure pad to record
Inverted and offset
pressure pad to clear