DPW Design Zero 2 Manual

DPW Design Ikke kategoriseret Zero 2

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Side 1/4
Z Z Zero 2 -2, Dual ero Difference
Thanks for purchasing a Z-2. We hope it becomes an essential part of your modular synthesizer.
The Z-2 is a two channel zero difference trigger that can be CV controlled.
It is the same evaluating click-less switching control circuit used in our D-2, 4-Band Distortion module but
with all the ins and outs accessible to make it as useful as possible in the context of a modular synthesizer.
The Z-2 was mainly designed for audiorate wave-splicing together with a Switch but it can also be used to
detect zero crossings of signals, to detect zero difference between two signals, to perform click free
switching, to add jitter to signals, to synchronize signals and many other things. It is mainly designed to be
used in combination with other modules such as the Switch module but can also be used on its own.
As the technical nature of this module can get a little abstract we thought we should start with some clear
examples of its use.
There is a more detailed description further on in the manual for those that are interested.
Controls
A
A is one of the inputs to a comparator (B is the other). A is compared to B. If the voltage on A is
higher than B then Out will go high if D is high or Out will go low if D is low. D is controlling what Out
will be after A has become higher than B.
A is normalled to 0V if nothing is connected.
B
B is the other input to the comparator.
B is normalled to 0V if nothing is connected.
D
D is controlling what Out will be after A has become higher than B (a zero event).
D is a logic input but works with audio too. A signal 1V or more is seen as a logical high signal.
If nothing is connected to D the output is just controlled by A and B and will toggle from high to low or
low to high every time it gets triggered by the comparator (free running mode).
Out
Out is a logic output where high is +5V and low is 0V.
It is meant as a logic control signal but can of cause be used as audio.
The LED next to the Out shows the status of the output signal.
In short you can compare two signals on A and B and when they are equal Out will toggle.
Or you can compare signals on A and B but Out will only switch to what you tell it to switch to by the
signal in on D.
This sounds simple but can give you access to functions that are hard to achieve in other ways.
Device specs
Module size: 2 hp wide, 29 mm deep with power connector.
Input impedance: 100 kohm
Out impedance: 1 kohm
Power requirements: +12V. Max power consumption 10 mA
-12V. Max power consumption 3 mA
Connect the power cable with the red stripe towards the marking -12V on the board.
The unit is protected for reverse power.
DPW Design, Häradsvägen 200, 14171 Segeltorp, Sweden
www.dpw.se MAN-Z-2 Rev B
Use case examples
A few examples, just to get your imagination going.
Jitter generation (swing)
Jitter is when the rising and falling edges of a signal vary around the time where they are expected to be.
This is what is called swing in sequencers. With the Z-2 you can add that to any signal.
A simple example is for drums.
Connect as the picture and you can set the amount of jitter with the VCO
or LFO. High frequency low jitter. If you lower the frequence a lot, the jitter
will be so extreme so it starts skipping gate signals and you have a
random variation in your gate rhythm.
An other example can be to connect it on the sync signal between two
VCOs instead of the gate signal.
This will give you a very dirty sound out from the two jitter synced VCOs.
Or simply one VCO in to D and another VCO to A. Then use the Out signal
as your sound source. Can end up as a very aggressive square sound.
Synchronizing
This is like the previous jitter example but syncing signals instead of making them unsynced.
Again the drum example from before but LFO and Gate in has swapped
places. This will also generate a varied drum pattern with the frequency of
the LFO controlling how many gate signals that will be let through to Out.
The difference from the previous example is that the gate out signals will be
in perfect sync with the gate in on A.
The reason there is a 1V signal in to B is that B is normalled to 0V and a gate
signal from a sequencer (or other logic signal) will not completely go down to
0V. It can actually be 0,1V and then the gate signal will never pass the
detection threshold on B. So you need to feed the circuit with a voltage
between 1V to 4V.
Wavesplicing, clickless switching
A way to switch audio or CV sources without any glitches in combination with the SW-1 Switch module.
Start with D disconnected. Free running mode.
A and B listens to the two VCOs you are going to switch between.
When the Z-2 detects that A and B are on the exact same voltage
Out will toggle and a switch is made from one VCO to the other.
This way you get no click in the switching and a seamless wave-
splicing.
If you connect a gate signal to D you can control the switching with
it. When the gate signal goes high the Z-2 will wait till the two
VCOs are at the same voltage and a switch will be made.
Try and connect an unsynced VCO to D for controlling when it shall switch. Could give an almost broken but
not harsh sound, or all sorts of interesting sounds.
DPW Design, Häradsvägen 200, 14171 Segeltorp, Sweden
www.dpw.se MAN-Z-2 Rev B

Produkt Specifikationer

Mærke: DPW Design
Kategori: Ikke kategoriseret
Model: Zero 2

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