Voxengo Boogex User Guide

Voxengo Boogex User Guide
Version 3.1
https://www.voxengo.com/product/boogex/
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Introduction 3
Features 3
Compatibility 3
User Interface Elements 4
Emphasis EQ 4
Pre EQ 4
Amp 4
Cabinet Sim/Convolver (Mono, Stereo) 4
DynaCab Editor 5
Stereo Reverb (OldSkoolVerb) 5
Credits 7
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Introduction

Boogex is a guitar amplifier plug-in with a variety of sound shaping features, for professional music production applications. With Boogex it is possible to get a heavy distorted sound as well as slight “jazzy” saturation sound. Boogex is also able to apply any speaker cabinet impulse response (selection of built-in impulses is available). The processing latency is close to zero making it possible to use Boogex for real-time guitar processing.
Boogex also includes input gate module, and reverberation module derived from Voxengo OldSkoolVerb reverb.
Boogex can be also used as a plain stereo convolution processor when its “Amp” stage is turned off. The convolution module has zero latency and is CPU-friendly.

Features

Emphasis EQ 2 amplifier types 14 amplifier modes 61 built-in cabinet impulse responses DynaCab processing Stereo convolution processing Gate module Stereo convolution option Built-in stereo reverb 64-bit floating point processing Preset manager Undo/redo history All sample rates support Zero processing latency

Compatibility

This audio plug-in can be loaded into any audio host application that conforms to the AAX, AudioUnit, VST or VST3 plug-in specification.
This plug-in is compatible with Windows (32- and 64-bit Windows XP, Vista, 7, 8, 10 and later versions, if not announced otherwise) and macOS (10.11 and later versions, if not announced otherwise, 64-bit Intel processor-based) computers (2.5 GHz dual­core or faster processor with at least 4 GB of system RAM required). A separate binary distribution file is available for each target computer platform and audio plug­in specification.
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User Interface Elements

Note: All Voxengo plug-ins feature a highly consistent user interface. Most interface
elements (buttons, labels) located at the top of the user interface are the same in all Voxengo plug-ins. For an in-depth description of these and other standard features, and user interface elements, please refer to the “Voxengo Primary User Guide”.

Emphasis EQ

Emphasis equalizer is used to shape the sound of the amplifier. This is a very powerful tone-shaping stage. Please refer to the “Voxengo Primary User Guide” for in-depth information about this EQ control surface’s functions.
Emphasis EQ allows you to overdrive certain areas of the spectrum heavier or lighter than the others.
Note that low- and high-pass filters are applied both before and after the amplifier module.

Pre EQ

Used to filter the incoming signal. This is usually useful if the pickups on the guitar are too boomy or too crisp. This EQ can be also used to shape the sound.
You can enable the “Gate” module to enable input signal gating (which is applied before the Pre EQ stage). The slider adjusts gate’s threshold level.
Amp
Here you can select the amplifier type and mode. Note that since each amplifier type uses its own fixed amplifier algorithm, the difference between different modes of the same type may not be pronounced. The “Type 2” amp mimics a 3-stage valve amplifier.
The “Drive” knob specifies the amount of amplification in decibel.
By means of the “Pre EQ Mix” knob (in percent) you can mix in the input (gated and pre-equalized) signal to the distorted signal before it goes to the speaker cabinet stage.
Note that when this “Amp” stage is disabled, the convolver works in stereo mode. In this case, the “Pre EQ Mix” knob should be set to “100” to additionally bypass the Emphasis EQ stage, or left at lower values if the low- or high-pass filtering is desired.

Cabinet Sim/Convolver (Mono, Stereo)

Speaker cabinet impulse response selects which speaker cabinet model (and mic) to use. It is possible to load an external audio file (WAVE, Wave64, AIFF), but you have to be careful with large files as they may overload your CPU quickly.
The “X” button unloads a currently loaded disk audio file, and switches to the internal cabinet impulse selector.
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The “Amp Mix” knob (in percent) specifies the amount of dry amplified sound to blend with the convolved sound.
The “Dyn” switch enables the DynaCab processing.

DynaCab Editor

When the “Dyn” switch is enabled, the “DynaCab” button becomes available. This button opens the “DynaCab Editor” window which controls the DynaCab processing. Note that this window is preset-less, because DynaCab requires an elaborate fine­tuning suitable for the source signal.
The DynaCab processing is simple in its nature: the Amp signal is processed by two independent convolvers, each loaded with its own impulse response. Then the outputs of these convolvers are mixed in a dynamic manner. The dynamic response is derived from the signal output of the Pre EQ stage. This preserves the original guitar playing dynamics.
The DynaCab tuning is best started by choosing an appropriate threshold: the “Cab 1 Thrs” selects the Pre EQ stage signal’s upper (peak) threshold level which corresponds to full “Cabinet 1” output. The “Dyn Range” then selects the negative delta of Pre EQ stage signal’s level which corresponds to full “Cabinet 2” output. So, when the signal is loud, the Cabinet 1’s response will be prevalent in the DynaCab’s output, but when the signal is quiet (lower by the “Dyn Range” decibel), the Cabinet 2’s response will be prevalent instead. At intermediate Pre EQ stage’s levels, both cabinets will be mixed in a varying proportion. The “Dyn Range” usually depends on the guitar playing dynamics.
The “Attack” and “Release” parameters affect envelope detector’s timing characteristics. For snappy response, it is suggested to use lower values for both parameters.
Note that impulse responses of both cabinets are loudness-matched by default. The “Cab 1 Gain” parameter allows you to boost or cut the loudness of Cabinet 1’s output signal. In practice, this works as an expander effect on boost, and as a compressor effect on cut. The “Cab 1 Delay” parameter time-shifts the Cabinet 1’s output by the specified amount in milliseconds. Such delay allows you to better align both cabinet impulse responses to reduce comb-filtering artifacts.
You can load any impulse responses in the “Cabinet 1” and “Cabinet 2” selectors – even reverb responses, for special sound effects. In an ideal case, both impulse responses should be matched: e.g. by capturing two impulse responses from a real guitar cabinet, at high and low loudness levels. Unmatched impulse responses can be used for special sound effects, but finding a good match may be a tedious experience.

Stereo Reverb (OldSkoolVerb)

This group of knobs affects reverb’s subjective spatial image.
The “Pre-delay” parameter specifies reverb’s pre-delay time (in milliseconds). Imitates distance from the listener to the performer. Lower values produce denser early reflections.
The “Space” parameter specifies imaginary time (in milliseconds) between reflections: this effectively specifies room’s dimensions. Extremely low values
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produce “plate reverb” sound and a denser reverb tail. Higher values produce hall reverb sound and a sparser reverb tail. Higher values also produce a more spacious, “transparent” reverb sound, suitable for application over the full mix.
The “Time” parameter specifies reverb’s RT60 time (in milliseconds), the time it takes for the reverb loudness to fall down by 60 decibel. This parameter models both room’s size and overall damping.
The “Width” parameter specifies reverb’s width (in percent). This parameter imitates room’s width at listener’s position.
The “Gain” knob adjusts reverb’s loudness.
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Credits

DSP algorithms, internal signal routing code, user interface layout by Aleksey Vaneev.
Graphics user interface code by Vladimir Stolypko. Graphics elements by Vladimir Stolypko and Scott Kane.
This plug-in is implemented in multi-platform C++ code form and uses “zlib” compression library (written by Jean-loup Gailly and Mark Adler), “LZ4” compression library by Yann Collet, filter design equations by Magnus Jonsson and Robert Bristow-Johnson, VST plug-in technology by Steinberg, AudioUnit plug-in SDK by Apple, Inc., AAX plug-in SDK by Avid Technology, Inc., Intel IPP and run­time library by Intel Corporation (used under the corresponding licenses granted by these parties).
Voxengo Boogex Copyright © 2005-2020 Aleksey Vaneev.
Impulse responses by Murray McDowall and Nic Beamso.
VST is a trademark and software of Steinberg Media Technologies GmbH.
Happy Mixing!
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