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DUALFEX PRO EX2200
2.2.7 Sound Enhancement in Hi-fi and Video
Of course, the BEHRINGER DUALFEX PRO can also find applications in the fields of hifi and video. The unit is
simply placed between the signal source (cassette recorder, tuner, VCR etc.) and the power amplifier. We
recommend using the tape monitor inputs most preamplifiers provide, thus the BEHRINGER DUALFEX PRO
can be switched into any signal source.
3. TECHNICAL BACKGROUND
3.1 The DUALFEX PROs Main Features
The BEHRINGER DUALFEX PRO...
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increases presence and transparency. The program material will sound lively and natural again.
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improves the intelligibility of speech: voices become clearly articulated, text easily intelligible, the
transparency of the vocal increases.
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provides a distinct sound improvement, particularly for instruments played in a percussive styleslapped
guitars or drums will sound incredibly funky.
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provides better stereo imaging: the sound becomes more differentiated, speaker setup poses less
problems, yet the signal remains fully mono-compatible.
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does not require any decoding process, since sound enhancement with the BEHRINGER DUALFEX PRO
is not created independently of the signal itself, and remains available even during numerous processing or
copying stages. Even digital recordings or CD replaying will gain from the use of the BEHRINGER DUALFEX
PRO.
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increases the listeners awareness. Even with low sound pressure levels, the DUALFEX PRO avoids
listening fatigue.
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finds useful application in Hi-fi systems by providing better resolution of the sonic image, due to its
suitability for the studio and its outstanding specifications. In particular, the processing of old analogue
recordings (disks and tapes) proves to be very efficient with the DUALFEX PRO.
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produces a more powerful and fundamental bass which does not sound muddy. All recordings will benefit
from the dry and precisely defined bass contouring.
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produces an improved spatial enhancement and stereo effect intensity with the surround processor without
audibly colouring the sonic image.
3.2 Psycho-Acoustic Background
The term psycho-acoustics refers to the psychological aspect of hearingin contrast to the physiological
transfer of impulses (transmission of nervous impulses). Psycho-acoustics examines the effect of sound on
the listener and the reasons for certain sonic impressions. The way sounds are interpreted is being determined
by a lot of factors. Modern science is able to explain some of them, due to their complexity measuring them is
yet another story. For instance, those portions which are responsible for the spatial localization of a sound
consist of multiple reflections of the sound, depending on the acoustical setting and the listeners position.
Nevertheless, they determine the quality of a recording to an extraordinarily large extent.
There are also portions of the audio spectrum which we perceive as presence or naturalness. If this kind of
information is missing, the recording suffers from a loss in freshness, liveliness and spatial transparency.
Furthermore, natural harmonics are essential components of the sound. Often enough, they only represent a
minor portion of the signal and are easily lost. It´s the harmonic structure that makes a tones colour unique.
Without this structure, different instruments would not be distinguishable. Numerous factors determine the
sound of an instrument: the design and materials to name but two, but with such bearing on the eventual sound
produced by that instrument.
When comparing acoustic musical instruments, for instance acoustic guitars, you will note that even two
instruments from the same series have a different sound. From a physical point of view, a guitar produces a
tone by means of a vibrating string which, in turn, sets air in motion. The subsequent propagating sound waves
3. TECHNICAL BACKGROUND