Instruo arbhar Manual de usuario
arbhar
Granular Audio Processor
User Manual
(Firmware 1.5.4b)
2
Contents
4
Description / Features
5
Installation / Specifications
6
Overview
8
I/O & Capture
12
Granular Synthesis
17
Pitch
20
Shift Button
Erase & Undo
21
Layer Record
Destination Lock
22
Audio Analysis & Onset
Detection
24
Onset Control Modes
25
Scan & Follow Mode
27
Wavetable Mode
28
Hardware Configurations
- Stereo Panning
- Hold CV
- Stereo Reverb
- Feedback / Delay
31
Save & Load
4
Description
arbhar heralds a new generation of granular processing in Eurorack.
Sampled audio can be chopped into tiny grains, scattered, shaped,
re-pitched, reversed, and layered for an endless range of audio
manipulation from seamless frozen tones to mutated acousmatic
madness. Each grain sounds with its defined specifications. When
modulation is used, the “per-grain parameter” definition allows for true
polyphonic layering.
Featuring a condenser microphone set into the front panel, built-in audio
analysis for automatic sampling, and internal modulation over various
parameters; this is truly a granulator like no other.
Meet the Lexer Method.
Features
• 44 polyphonic grains between two granular engines
• Six 10 second individual and consecutive audio buffers
• 1V/Oct pitch tracking
• On-board random pitch deviation and grain direction probability
• Scan mode, Follow mode, and Wavetable mode
• Stereo pan, delay, and reverb configurations
• Built-in condenser microphone
• Dedicated analogue input pre-amplifier
• USB import & export functionality
• Audio analysis with onset detection for automatic audio capture
• Includes 2 HP passive CV expansion module & 4GB USB
flash drive.
5
Installation
1. Confirm that the Eurorack synthesizer system is powered off.
2. Locate 18 HP of space in your Eurorack synthesizer case for
the module.
3. Locate an additional 2 HP of space in your Eurorack synthesizer
case for the optional CV expansion module.
4. Connect the 10 pin side of the IDC power cable to the 2x5 pin
header on the back of the module, confirming that the red stripe on
the IDC power cable is connected to -12V, indicated with a white
stripe on the module.
5. Connect the 16 pin side of the IDC power cable to the 2x8 pin
header on your Eurorack power supply, confirming that the red
stripe on the power cable is connected to -12V.
6. Optional: To install the CV Expander module, connect the included
12 pin IDC cable to both modules. Ensure that the red strip of the
IDC cable matches the white stripe on each module.
7. Mount the Instruō arbhar in your Eurorack synthesizer case.
8. Power your Eurorack synthesizer system on.
Note:
This module has reverse polarity protection.
Inverted installation of the power cable will not damage the module.
Specifications
• Width: 18 HP Module + 2 HP CV Expansion Module
• Depth: 42mm
• +12V: 210mA
• -12V: 30mA
• Sample Rate: 64kHz
• Bit Depth: 32 Bit
6
arbhar
IN OUT
ONSET
CAPTURE
SENSE
OUT
HOLD
DUB
%
INTENSITY
SPRAY SCAN
PITCH
1V/OCT
LENGTH
DRY WET
α
β
γ
δ
ε
ζ
Ω
SHIFT
arbhar |'ɑɾ·u:ɾ· | noun (agricultural) a grain, a very small amount
of a particular quantity, natural patterns or lines in the surface of wood
or cloth
Key
1. Condenser Microphone
2. Onset Input
3. Input
4. Input Level
5. Input Indicator
6. Dry/Wet Mix
7. Output Level
8. Output 1
9. Output 2
10. Capture Button
11 . Capture Gate Input
12. Layer
13. Layer Indicators
14. Granular Stream
15. Intensity
16. Intensity CV Input
17. Strike Button
18. Strike Input
19. Grain Window
20. Grain Direction
21. Grain Direction Indicators
22. Length
23. Length CV Input
24. Scan
25. Scan CV Input
26. Spray
27. Gate Output
28. Pitch
29. 1V/Octave Input
30. Pitch Deviation
31. Shift Button
32. Sensitivity
33. Hold
34. Dub
35. Onset Indicator
5
1
4678
9
10 11
12
30
35
31
32 33 34
28
29
27
26
19
25
20
21
23
22
18 17
16
15
14
24
2
3
13
7
MOD
DUB
D / W
SPRAY
LAYER
%
CV Expansion Module
Key
1. Spray CV Input
2. Layer CV Input
3. Grain Direction CV Input
4. Grain Window CV Input
5. Pitch Deviation CV Input
6. Dub CV Input
7. Mod CV Input
8. Dry/Wet Mix CV Input
1
2
3
4
5
6
7
8
8
I/O & Capture
Condenser Microphone: The Condenser Microphone located on the
front panel can be used for capturing audio. It is normalled to the Onset
Input when no cables are patched to the Onset Input jack.
• The Onset Input is normalled to the Input. When no cables are
connected to either input, the Condenser Microphone will normal
through the Onset Input and to the Input.
Input: AC coupled audio input.
Normalised Signal Path:
Input Level: The Input Level knob sets the level of the signal present at
the Input. This includes the level of the normalled Condenser
Microphone signal. The input stage incorporates analogue limiting. This
allows arbhar to saturate rather than digitally clip when high amplitude
signals are used.
• If the knob is at its 10:00 position, the signal present at the Input is
approximately at unity gain. If the knob exceeds the 10:00 position,
arbhar drives the signal through the input pre-amplifier. Analogue
limiting will prevent signals from digitally clipping at the Input.
• The knob can be used to increase line level signals to modular level.
Input Indicator: The Input Indicator will illuminate amber when a signal
is present at the Input. The brightness of the LED indicates the amplitude
of the input signal.
Microphone ONSET IN
Signal to be Analysed Signal to be Recorded
9
Dry/Wet Mix: The Dry/Wet Mix parameter will equal power
crossfade between the dry signal and the granular engine.
Output Level: The Output Level knob sets the level of the signal present
at the Outputs.
Outputs: By default, grains are randomly distributed between the two
Outputs using coin toss logic.
• Output 2 is normalised to Output 1. For mono playback, monitor
from Output 1
• Connecting Output 2 enables stereo imaging and independent
effect processing for each output (See Hardware Configuration for
more information).
Capture Button: The Capture Button activates recording of the signal
present at the Input.
• Each capture activation will start recording from the start of
the layer.
• Once the recording has started, the button will illuminate amber and
recording will continue until the layer is filled, even if the currently
selected layer is being changed.
• The recording will automatically stop once the layer is filled. This is
indicated by an unilluminated Capture Button.
• Pressing the Capture Button while capture is activated will
stop recording.
• arbhar automatically saves recordings and will retain recordings
between power cycles (See the Save & Load section for
more information).
Capture Gate Input: Recording and overdubbing is activated for as
long as a gate signal at the Capture Gate Input is held high.
10
Layer: The Layer knob sets the currently selected layer. There are six
layers which can store up to 10 seconds of audio each.
• They are referred to as alpha, beta, gamma, delta, epsilon,
and zeta.
• Layer content is set at the beginning of each grain and remains
unchanged for the duration of the grain.
• When the knob is fully clockwise and the omega Layer Indicator is
illuminated, all layers are consecutively available via the
Scan parameter.
• To ensure the absence of audio drop outs at extreme Scan
parameter positions, arbhar will record for an extra 2 seconds at
the end of each layer.
Layer Indicators: The Layer Indicators will illuminate around the Layer
knob to indicate the currently selected layer.
• When the knob is fully clockwise and the omega Layer Indicator is
illuminated, the currently selected layer is determined by the position
of the Scan parameter and indicated by the corresponding
Layer Indicator.
10 SECONDS EACH
ALL LAYERS LINKED
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