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Dark time

DOEPFER

Nuts and bolds of sequencing

Dark time

DOEPFER

Nuts and bolds of sequencing

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4. The Nuts and Bolts of analog Sequencing

In case step sequencers – or sequencers in general – are new to you, please read this section thoroughly. 

You will learn about the nuts and bolts of these machines that will help you to grasp Dark Time’s nasty (well, 

sort of…) little secrets fully.

If you are an expert already, the study of the following section is not a must-read, but maybe at least en-

tertaining in some ways (we have tried our best not to bore you to tears, mind you). So please feel free to 

continue… or not.

 

4.1. A very brief history of step sequencers

Since the 18th century, mostly clockmakers and makers of mechanical musical instruments have tried to 

create devices which would generate tonal and musical patterns automatically. The musical boxes of those 

days of yore could be called the great-grandfathers of modern sequencers. 

Of course it was not possible to alter an existing pattern and if so, only with 

a lot of technical effort. Changing the pattern was out of the question once 

it had been cast in brass cylinders, etched into iron disks, or punched into 

cards (did we hear you say steam calliope or player piano?). By the mid-

20th century, electronics had become widely available for generating sound 

but were only used by universities, broadcasters, and the military. In the 

1960s Robert Moog and Donald Buchla devised the use of voltage-control 

for sound-generating modules independently of each other, and the situati-

on changed quickly: All important parameters of a sound like pitch, timbre, 

duration, and level could now be controlled in a relatively easy way by a 

handful of low voltages and a bunch of cables, knobs and switches. The 

dream of the automated musical instrument that had been around for centu-

ries suddenly was within an arm’s reach. All that was needed was a device 

that generated a continuous ”sequence” of voltages to control a series of 

pitches. The step sequencer was born. 

4.2. „Less is more“, or: Some good reasons for using a step sequencer

Of course we all know that digitalization of musical data is pretty easy and a very common thing to do these 

days. Storage and retrieval of complex musical literature (no matter whether a pop song or a symphony) is 

possible by today’s technical achievements. Even the performance of a skilled piano player can be re-

corded and stored in an adequately equipped (software-) sequencer and played back by a computer. So 

why would we want to mess around with such an anachronistic thing that is just capable of storing sixteen 

notes at a time by setting a couple of controls manually? Quite simple: The majority of interesting genres 

of electronic music is still characterized by the minimalist trademark rhythm of step sequences with just a 

limited number of stages. Think of the ”Cosmic Couriers” of the early 1970s, the repetitive ”robot”-sound of 

the proto-techno era, the ”acid”-tracks of the 1990s, or the minimal-techno productions of today. The re-

petitive rhythm of a step sequencer is still an absolutely essential and important stylistic element of many, 

many genres of electronic music. It lives from the restriction to absolute simplicity and the hypnotic effect of 

endlessly repeating patterns that were and still are the trademark of this music. Thus the step sequencer is, 

despite of all its alleged limitations, as important today as it was when it was first introduced.

4.2.1. Squeezing more music out of eight notes

When working with a step sequencer, it would be a wise move to get rid of old-fashioned ways of song-

writing and all theory of melody and harmony first. The step sequencer is made for tactile and sensual 

experience and hands-on experimentation. What might seem to be quite abstract and technical at first sight 

will soon become very special qualities in their own right – far removed from traditional keys and notes. And 

that’s what it’s all about: You will get musical results that would not have been possible by the use of  

traditional ways of songwriting on a ”real” (read: „traditional“) instrument, a piece of sheet music or even a 

computer. The desired repetitive elements, the subtle evolution within patterns, and finally the equality of 

melody and timbre will come into being almost automatically.

 

This opens up one more important perspective – the somewhat ”technical” and apparently ”unmusical” in-

terface of a step sequencer gives you direct hands-on access to each step of the pattern. A device like Dark 

Time enables the artist to interact with musical patterns in many ways by just hitting one or two controls or 

flicking a switch. No need to mess around with a mouse, editing-windows, and QWERTY keyboards.

Apart from that, you are always free to record a rocking pattern into your computer sequencer in order to 

use it as a part of a bigger composition and to free up Dark Time for creating new and even more rocking 

patterns.

Another interesting aspect is the fact that you cannot only use your step sequencer to control pitch but also 

the parameters of a sound of an external synthesizer in the same intuitive way– e.g. the cutoff frequency of 

its filter. Dark Time’s ”Range” switch produces all voltage ranges that are useful in conjunction with analog 

synthesizers.

Dark Time is capable of addressing two registers of eight steps each in parallel. So two parameters of a 

sound can be accessed independently, e.g. pitch and filter frequency, volume and timbre etc. Now let two 

registers run against each other or one of them controlled randomly, play with the jump function and so on. 

The sequencer will become a pattern-based sound generator!

Содержание ark time

Страница 1: ...Dark Time Owners Manual V1 2 DOEPFER MUSIKELEKTRONIK GmbH ...

Страница 2: ... Make sure that during transport and in use the instrument is supported properly and cannot drop slip or fall over because people might get injured Never use the instrument in the immediate proximity of electronic devices e g monitors power supplies computers as these interferences could cause malfunctions within Dark Time and corrupt memory data The instrument is to be shipped in the original pac...

Страница 3: ...p Dark Time to your setup After that you will find a brief overview of its functions Sequencer experts may use this as a quickstart guide You should not skip the complete description of the entire Functions section in the next chapter though Dark Time hides some interesting features under its hood If sequencer technology especially the secrets of analog sequencing are totally new to you please ref...

Страница 4: ...r envelopes which in turn normally control the VCF and output VCA CV1 determines the pitch of the VCO s The Clk In Out jacks make synchronization with vintage drum machines or sequencers possible that have not been MIDIed Using additional connections Dark Time will become capable of controlling two analog synthesizers or their parameters in parallel Also some of Dark Time s functions can be remote...

Страница 5: ... On On On On On On On On On On 5V On Down Down 1 8 Combi Midi USB 1 On On On On Cont Cont Cont Cont Cont Cont Cont Cont Cont Cont Cont Cont 1 Cont Cont Cont Pulsewidth Clock Transpose Range Quantize Direction Link Sync Cont DARK TIME DOEPFER 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 6 6 6 6 6 6 6 6 5 6 6 6 6 6 6 6 6 6 6 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 3 3 3 3 3 3 ...

Страница 6: ...ge switch When set to 1V the step controls are quantized into 13 discrete semitones one octave or to be more precise a ninth interval e g c to C 2V means 25 semitones two octaves and 5V means 61 semitones five octaves Scale allows the programming of any desired scaling In other words So the sequencer is forced to play only selected notes that fit into a certain musical scale This is how to program...

Страница 7: ...atio keep the Function key pressed and turn the Clock control You will notice the Step status LEDs 1 to 14 light up one by one The highest number lit up corresponds to the clock divider ratio listed in the chart on the following page Please bear in mind that the clock divider is only available when the Sync switch is in Internal or Midi USB position Step Note Setting for C Major Setting for C Mino...

Страница 8: ...e step 1 and 9 2x 1 8 mode or any step in jump position which determines the current starting point of the sequence Step key The first hit will activate the Step key function Each new hit on this key will make the register skip one step forward to the next step available This way you can step through the sequence manually Hitting the Stop key will quit this function Shuffle Divide Off Jump Jump Ju...

Страница 9: ...sation via MIDI Note Events 3 3 Synchronization and remote control of Dark Time Dark Time offers a bunch of useful interfacing options to communicate with external gear You are not only restricted to playing MIDI and or CV gate based synthesizers connected to Dark Time you may also synchronize it to other external instruments and even remote control some of its functions This will be achieved thro...

Страница 10: ... Input clock divider disabled for MIDI Clock Scale Function Step Schalter 1 13 enable disable Noten C bis C1 ON OFF Step Switches ON OFF hold down 5 Sec LED flashes Shuffle Divide Start Stop Reset Step Function Pulsewidth Clock 0 0 4 4 6 5 6 1 1 3 3 2 2 8 8 10 10 9 9 7 7 press hold down 5 Sec LED flashes press Shuffle Divide Start Stop Reset Step Function Pulsewidth Clock 0 0 4 4 6 5 6 1 1 3 3 2 2...

Страница 11: ...tude you name it The sockets labeled Gate 1 Out and Gate 2 Out send out you have already guessed it a gate signal again for each register individually Active sequencer positions put out a signal of 5V 12V or inverted at these sockets The duration of a gate signal depends on the setting of the Pulsewidth control s page 13 positive gate off on off inverted gate on off on The gate signal triggers the...

Страница 12: ...in e g Dark Time and a non MIDIed vintage drum machine a clock signal is needed A clock signal is a pulse wave its frequency pulses per time determi nes the tempo of the synchronized device When active Dark Time will generate such a clock signal and make it available at the Clk Out socket Changing the gate output voltage from 5V default to 12V by changing an internal jumper see page 21 will genera...

Страница 13: ...e g another Dark Time The clock signal described above will ensure the same rate for all units connected the start stop reset triggers will make sure that both units will perform these actions at exactly the same time Running two Dark Times the way we have just mentioned suggests that the slave device can be started stopped and resetted by means of external signals You have guessed it again this e...

Страница 14: ...top Reset Step Function Pulsewidth Clock 0 0 4 4 6 5 6 1 1 3 3 2 2 8 8 10 10 9 9 7 7 hold down LED lights up Clock Divider intern Shuffle Divide Start Stop Reset Step Function Pulsewidth Clock 0 0 4 4 6 5 6 1 1 3 3 2 2 8 8 10 10 9 9 7 7 and External Dark Time as slave device Sync switch in position MIDI USB Dark Times tempo is now controlled by an external clock source which sends a constant strea...

Страница 15: ...p 2 Gate Out Polarity Step 3 CV Out Value hold on off Step 4 Gate Lenght normal legato Step 5 Merge MIDI In and internal MIDI data Step 6 Send MIDI Realtime data DIN socket Step 7 Send MIDI Realtime data USB Port Step 8 MIDI Transpose Loop function Step 9 Auto Save function Step 10 Step switch position Stop disabled Step 11 Input clock divider disabled for MIDI Clock Scale Function Step Schalter 1...

Страница 16: ...As you allready know Dark Time puts out gate clock start stop and reset voltages via it s analogue inter face By default these voltage have 5V level Some vintage synthesizers may require higher voltages In order to match with these machines the levels of these signals can be changed from their default setting 5V to 12V by changing the position of an internal jumper on one of Dark Times boards Firs...

Страница 17: ...usic is still characterized by the minimalist trademark rhythm of step sequences with just a limited number of stages Think of the Cosmic Couriers of the early 1970s the repetitive robot sound of the proto techno era the acid tracks of the 1990s or the minimal techno productions of today The re petitive rhythm of a step sequencer is still an absolutely essential and important stylistic element of ...

Страница 18: ...rol voltages by one volt would result in pitch changing by one octave This ratio named scaling became a standard very soon and it still is today Exceptions from the rule were some vintage Japanese units e g by Korg and Yamaha that used an alternative method of scaling and interfacing When setting Dark Time s Range switch to another posi tion like 2V or 5V a full turn of a step control will yield a...

Страница 19: ...siness Disposal This device complies to the EU guidelines and is manufactured RoHS conform without the use of led mercury cadmium and chrome Still this device is special waste and disposal in household waste is not permitted For disposal please contact your dealer or Doepfer Musikelektronik GmbH Geigerstr 13 D 82166 Gräfelfing Deutschland IMPRINT Owners Manual by Matthias Fuchs VISOPHON Berlin Ger...

Страница 20: ...38 39 ...

Страница 21: ...Dark Time DOEPFER MUSIKELEKTRONIK GmbH ...

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