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RUMBLE OF ANCIENT TIMES

USER MANUAL

To configure the synthesizer, you need to change the values of the registers. 

Each  register  controls  a  certain  property  of  the  synthesizer,  and  a  

total  of  32  registers  are  available.  In  order  to  keep  the  instrument  

compact  and  affordable,  we  decided  to  divide  the  settings  into  pages.  

This  significantly  reduced  the  number  of  potentiometers  and  the  size  

of  the  synthesizer.  

At any given time, you have access to one page with 4 registers, which can be changed with 

the pots. To access the other parameters, you need to change the page by pressing the page 

buttons. After changing the page you can configure the parameters available on that page. 

There are 8 pages in total. Their number is set in binary code (three bits). The current page 

is displayed on the LEDs; pressing the buttons will invert the bit values. The upper button 

relates to the highest bit, the lower button to the lowest bit. When the page is changed, the 

register values do not change. To set a new value, start turning the appropriate pot. Let's 

look at the registers and the controlled parameters.

The registers are located according to the following table:

Page

Pot  1

Pot  2

Pot  3

Pot  4  

0

Channel  1  

Frequency

–  2

–  3

–  4

1

Channel  1  

Waveform

  –  2

–  3

–  4

2

LFO  1  

Frequency

–  2

–  3

–  4

3

LFO  1  Amplitude –  2

–  3

–  4

4

LFO  1  Type

–  2

–  3

–  4

5

Attack

Release

Filter  Cut

Filter  

Resonance

6

Summation  

type  in  node  1

–  2

–  3

Summation  

diagram

7

Tempo

Metronome  

and  sum.  

bypass

Random  1  

(amount)

Random  2  

(speed)

According to this table, if you need to change, for example, the amplitude of the LFO of 

channel 2, you need to go to page 3 (011) and start turning the second potentiometer. 

Next, let's take a closer look at all the registers.

Summary of Contents for RoAT

Page 1: ...USER MANUAL ...

Page 2: ... The modulated signal of each oscillator is mixed with other signals in one of three ways Each mixing method has three nodes where two signals are summed into one Each mixing node can have a different summing algorithm Next the signal goes to the filter with resonance and then to the audio output Sound oscillators can be switched on and off in real time using the interface or sequencer The buttons...

Page 3: ...ree bits The current page is displayed on the LEDs pressing the buttons will invert the bit values The upper button relates to the highest bit the lower button to the lowest bit When the page is changed the register values do not change To set a new value start turning the appropriate pot Let s look at the registers and the controlled parameters The registers are located according to the following...

Page 4: ...Pages 0 and 1 are for tuning the sound oscillators Pots on page 0 will change the tones of the sound oscillators from 19 to 1 350 Herz Page 1 will change the waveform of the oscillator There are 16 waveforms available 0 8 1 9 2 10 3 11 4 12 5 13 6 14 7 15 ...

Page 5: ...ng the multipliers it is possible to get LFO frequencies of 2 4 8 16 Hz As a result the LFOs are connected and it is possible to get interesting rhythmic effects The mode settings and tempo are controlled on page 7 Page 3 controls the impact of the LFO It s simple if a potentiometer is at zero its oscillator will not affect the sound The higher the potentiometer the higher the impact of the LFO Th...

Page 6: ...same applies to values 14 and 15 ENVELOPE AND FILTER The 5th page contains parameters of the envelope generator and filter settings The envelope generator turns on when you touch the sensors or when the sequencer is playing There are two parameters available attack and release More details are available in the section Channel settings The filter also has two parameters cutoff and resonance The fil...

Page 7: ...le mixing algorithms are the following 0 Addition Simply adding together two signals 1 Addition with overflow If the sum of the signals crosses the upper or lower border the result is directed to the opposite edge and continues growing from there 2 Subtraction 1 The second signal is subtracted from the first If the first signal is lower the result will be zero 3 Subtraction 2 The lower signal is s...

Page 8: ...ine waves using different methods As a consequence there are 8 8 8 3 1 536 possible connection patterns for the sound oscillators signal 1 Addition Addition with overflow Subtraction 1 Subtraction 2 signal 2 Multiplication Exclusive OR XOR Frequency modulation FM Waveform modulation ...

Page 9: ...r other devices When the potentiometer value is maximum the synthesizer tempo starts working in slave mode The sync out becomes sync in and expects an external clock signal The tempo is synced to the external signal As a result RoAT can work in both master and slave modes and can be a part of a setup with several different devices The second pot controls the metronome click and bypass settings Her...

Page 10: ...his system the registers will gradually change their values over time This process is controlled by the 3rd and 4th potentiometer on page 7 The 3rd pot sets the number of registers that will take part When 0 is set nothing will change When you turn the pot a little only the first 4 registers will be affected the setup is done with steps of 4 and only the oscillator frequency will be changed If you...

Page 11: ...o parameters attack and release They are controlled by the 1st and 2nd pots on page 5 By using the touch panel and envelope generator you can move away from the monotonous sound and play it in real time Switching channels off can be done in two different ways The mode is selected by the 2nd potentiometer on page 7 if before 12 o clock the first mode is used if it s after 12 o clock the second mode...

Page 12: ...As a result in certain configurations especially while playing on touch sensors you can get unusual effects when the sound will abruptly change after release For example this effect is possible with the previously mentioned FM modulation on the ending circuit Before touching the sensor we hear a loud sound and after touching it goes silent and rises with the speed of attack before reaching maximum...

Page 13: ...7th page The sequencer can also be switched on and off To do this press Record and Erase at the same time When the sequencer is off the internal clock keeps running and when you bring the sequence back to life it will continue from the same spot where it would have been had it not been stopped When the sequencer is off the tempo LED quickly blinks twice in a bar SYNCING WITH OTHER DEVICES Let s lo...

Page 14: ...el in PO then connect the sync out to the left channel and set up Sync Mode to 4 With this setup the output of the Operator will include both the signal of the Rumble and the signal of the PO itself Now let s look at syncing as slave Connect the left output of the Pocket Operator sync out to Rumble and the right output to the mixer To set up RoAT go to the last page and turn the first potentiomete...

Page 15: ...y Slowik production management and control Arsenii Vasylenko translation and web administration Valeriy Zaveryaev manual design and layout Vlad Kreymer industrial design of construction and circuitry Grigory Ryazanov creation of drawings for the mass production version Grzegorz Lacek management sales and communications Evgeny Aleynik legal consulting Nastya Azartsova front panel design drawing Paw...

Page 16: ...Manual version 1 0 10 2021 Made in Russia ...

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