AirRaid Audio Elements A-Filter Operating instructions

Brand: AirRaid Audio

Model: Elements A-Filter

Type: Operating instructions

[ OPERATION MANUAL ]!

Updated: 28.09.16

Elements A-Filter

Welcome!

Thank you for purchasing Elements: A-Filter.

A-Filter is an analog-modelled dynamic stereo ﬁlter which integrates seamlessly into our

Elements modular series. It combines a highly tweakable envelope follower with a dual ﬁlter,

complete with 8 all-new ﬁlter types. On the rear panel you will ﬁnd stereo CV inputs for the

main controls, which allow Filter to be plugged into Elements devices which feature stereo CV

output, such as the DS-LFO. In contrast with Elements Filter, A-Filter offers substantially

different ﬁlter algorithms, a warmer drive function, and self-oscillation. All this comes at a

slightly greater CPU hit, so which Element you chose to use will depend largely on the task

at hand.

Used either as a standalone device or as part of a modular/multiband setup, A-Filter is an

exceptional creative tool for sound designers and musicians alike.

Typical applications include: Classic ﬁlter effects; dynamic wah-wah effects; DJ-style HP-to-

LP ﬁltering; advanced dual peak ﬁlter effects, pre-distortion/lo-ﬁ overloading; evolving stereo

ﬁltered textures.

We hope you have as much fun using it as we did creating it. Enjoy!

About Elements

Elements is a series of mini devices originally derived from our Triad Multiband series. They

have been carefully crafted to isolate and enhance speciﬁc “elements” of Triad, and integrate

together modularly, through stereo CV modulation and slick, uniﬁed design. A-Filter is part of

a new wave of entirely new devices not derived from Triad.

Currently available Elements: A-Filter, Chorus, Distort, DS-LFO, Filter, Lo-Fi, Phaser, S-Delay,

T-Delay, Splitter 2 !

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Elements A-Filter

Contents

Loading and saving patches

Loading and saving patches in A-Filter is done in the same way as with any other Reason

device. See “Loading patches” and “Saving patches” in the Reason Operation Manual for

further information.

Controls and displays

ENV FOLLOWER!

The envelope follower generates a control signal from the device's audio input which can be

applied independently, either positively or negatively, to A-Filter’s primary controls. This signal

can be “smoothed” using the Attack and Release controls. Immensely tweakable, the

envelope follower produces a dynamic ﬁlter “wah-wah” effect, which will follow the ﬂow of the

music and help bring it to life.

Amp — Controls the amount of envelope modulation applied to the destinations speciﬁed by

the individual Envelope Mod Target toggle buttons.

Attack — Controls the attack of the envelope. Higher settings result in a slower attack,

whereas lower settings are much faster.!

Release — Controls the release or decay of the envelope. Higher settings result in a slower

release, whereas lower settings are much faster.

Envelope Mod Targets — Located to the right of the three knob controls listed above, these

buttons toggle whether the envelope modulation gets applied to their respective targets. E.g.,

activating the Freq and Res buttons ensures that the envelope modulation gets applied to the

Freq and Res parameters, but not to Width.

Welcome! 1

Loading and saving patches 2

Controls and displays 2

Env Follower 2

Analog Filter 3

FIlter Types 3

Global 4

Rear Panel 4

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Elements A-Filter

ANALOG FILTER

A-Filter’s analog ﬁlter is an insanely squelchy dual ﬁlter with 8 varied ﬁlter types. By “dual ﬁlter”

we mean, of course, that certain ﬁlter types in fact combine two ﬁlters in series or parallel and

allow their respective frequencies to be offset, creating a vast range of possible tones. With

each control being assignable to the envelope follower, A-Filter is the tool par excellence for

adding instant analog charm to any sound.

Drive— Adds a subtle amount of distortion to the pre-ﬁltered input signal. This distortion

algorithm works identically to the ‘Warmth’ algorithm in our Elements Distort Rack Extension.

In contrast with our regular Elements Filter’s new drive knob, this control creates a more

subtle effect which better complements A-Filter’s analog sound.

Type— Selects the ﬁlter type of our multimode ﬁlter. Each mode has been carefully tuned for

“musical” results. Please refer to FILTER TYPES for more info on each of the ﬁlter types.

Freq — Controls the frequency of the multimode ﬁlter. The value range changes depending

on the ﬁlter type selected.

Res — Controls the resonance of the ﬁlter in all modes.

Width — Controls the width of the ﬁlter (only active in LP4, HP4, BP2, BR2, 2xBP2 and

2xBR2 modes)

FILTER TYPES!

LP2 — Standard 2-pole low-pass ﬁlter. Freq ranges from between 50 Hz to 20 kHz. Width

control has no effect.

LP4 — 4-pole low-pass ﬁlter. Freq ranges from between 50 Hz to 20 kHz. The Width control

serves as a separator between the ﬁrst two poles of the ﬁlter and the last two. When Width is

set to 0%, all four poles take the same frequency cutoff value. When Width is increased, the

cutoff value of the last two ﬁlter poles is raised above the initial cutoff threshold, allowing for

some interesting variations on the standard low-pass ﬁlter sound.

HP2 — Standard 2-pole high-pass ﬁlter. Freq ranges from between 50 Hz to 20 kHz. Width

control has no effect.

HP4 — 4-pole high-pass ﬁlter. Freq ranges from between 50 Hz to 20 kHz. The Width control

serves as a separator between the ﬁrst two poles of the ﬁlter and the last two. When Width is

set to 0%, all four poles take the same frequency cutoff value. When Width is increased, the

cutoff value of the last two ﬁlter poles is raised above the initial cutoff threshold, allowing for

some interesting variations on the standard high-pass ﬁlter sound.

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Elements A-Filter

BP2 — 2-pole band-pass ﬁlter. Freq ranges from between 50 Hz to 10 kHz. Width controls

the width of the ﬁlter, i.e. raising Width lowers the high-pass cutoff component of the ﬁlter and

raises the low-pass cutoff respectively, around the center frequency speciﬁed by the Freq

control.

BR2 — 2-pole band-reject ﬁlter. Freq ranges from between 50 Hz to 10 kHz. Width controls

the width of the ﬁlter, i.e. raising Width lowers the low-pass cutoff component of the ﬁlter and

raises the high-pass cutoff respectively, around the center frequency speciﬁed by the Freq

control.

DJ LP/HP 2 — A classic dual 2-pole low-pass/high-pass DJ ﬁlter. When the Freq knob is

centred, the audio signal is completely dry. When turned to the left, Freq progressively

introduces a low-pass ﬁlter cutoff, which extends all the way down to 50 Hz. When turned to

the right, it does the same with a high-pass ﬁlter, which extends all the way up to 20 kHz. The

Width control has no effect.

DJ LP/HP 4 — A classic dual 4-pole low-pass/high-pass DJ ﬁlter. When the Freq knob is

centred, the audio signal is completely dry. When turned to the left, Freq progressively

introduces a low-pass ﬁlter cutoff, which extends all the way down to 50 Hz. When turned to

the right, it does the same with a high-pass ﬁlter, which extends all the way up to 20 kHz. The

Width control has no effect.

GLOBAL

Mix — Controls the dry/wet mix of the device.

Vol — Controls the volume level of the device’s output, allowing you to either attenuate it or

boost it by up to 6 decibels.

REAR PANEL!

As with most other devices in our Elements series, A-Filter offers two distinct types of CV

modulation—mono or stereo—depending on the parameter in question. This is a unique

implementation which truly embraces Reason’s modular concept and allows for effects which

were impossible... until now.

CV Modulation (mono) — The CV input modulates the parameter for the left and right audio

channel in an identical manner. Essentially, the CV modulation for these parameters works

exactly like it does for any stock Reason device.

CV modulation (L/R) — The left and right audio channels are modulated are modulated

individually. This works by connecting the left and right CV inputs for the parameter to

separate CV sources (such as the stereo CV outputs of our DS-LFO device, or indeed any

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Elements A-Filter

two CV outputs from any Reason device). These parameters also allow for mono CV

modulation, which is active if only the left CV input is connected (in much the same way that

connecting only the left audio input of a stereo pair gives you a mono audio signal).

Audio I/O — The audio inputs and outputs work exactly the same way as for any stock

Reason device.

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AirRaid Audio Elements A-Filter Operating instructions

Brand: AirRaid Audio

Model: Elements A-Filter

Type: Operating instructions

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AirRaid Audio Elements A-Filter Operating instructions

AirRaid Audio Elements A-Filter Operating instructions

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