Behringer SNR2000 - Manual (Page 6)

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DENOISER SNR2000
1. INTRODUCTION
Thank you very much for expressing your confidence in BEHRINGER products by purchasing the BEHRINGER
DENOISER SNR2000.
Electrical noise is still one of the most unpleasant problems in the field of electro-acoustics. The basic noise
produced by a single unit is not considered to be annoying. The combination of several instruments, effects
devices and tape machines, however, results in a drastic increase in noise level. This requires the use of a
noise reduction system.
Conventional noise reduction systems
Conventional noise reduction systems often suffer from several perceivable drawbacks: either the noise
reduction process deteriorates the signal by cutting the high-frequency portions, or the dynamic filter reacts
too slowly, which makes percussive signals lose its “bite”. Last but not least, there are systems which
function as simple noise gates and produce unnatural “on/off” effects.
The interactive technology of the DENOISER
With the DENOISER we offer one of the most efficient noise reduction systems using single-ended technology.
BEHRINGER’s unique filter circuitry in conjunction with the new built-in BEHRINGER audio detectors
represents a technical breakthrough in the field of noise reduction systems. Effective noise reduction with
minimal signal interference is the result.
The noise reduction capabilities of the BEHRINGER DENOISER are based on bandwidth limiting by means
of a dynamic low-pass filter and broadband noise reduction during music pauses by a “downward” expander.
The need for both a professional and all-purpose noise reduction system was the basis for the development of
the BEHRINGER DENOISER. Many years of experience in the field of noise reduction technology enabled us
to design a system particularly suited to the highest demands.
The TAC (Transient Attack Control) circuitry, a new BEHRINGER development, opens the filter even when
processing percussive material, without e.g. cutting a drum’s “kick”.
A newly developed IRC (Interactive Ratio Control) expander has been integrated into the DENOISER. The
ratio of which is automatically adjusted, dependent on the program material. The result is an expander which
can be adjusted without deteriorating your audio. Furthermore, the expander is more tolerant of those signals
which appear slightly above the background noise.
DENOISER—the professional noise reduction system
The BEHRINGER DENOISER proves to be an excellent tool for the professional sound engineer. Furthermore,
the extensive control features provide specific and successful processing of all sortes of program material.
The unit can be used in broadcasting and TV, professional studios, CD mastering studios and for P.A. and
intercom systems etc. It is useful for cleaning up studio tracks, tape duplications, motion picture sound
tracks, during mixdown, and more.
Be it noise reduction for instruments (guitars, keyboards, etc.) or for effects devices (flangers, distortion units,
phasers, chorus units, digital delays, compressors, equalizers, pedal board devices, analog delays, psycho-
acoustic effects units, pitch shifters, etc.) the BEHRINGER DENOISER is the no-compromise answer when
the situation demands a no-compromise solution.
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This manual first describes the terminology used, so that you can fully understand the SNR2000
and its functions. Please read the manual carefully and keep it for future reference.
1.1 The design concept
The philosophy behind BEHRINGER products guarantees a no-compromise circuit design and employs the
best choice of components. The operational amplifiers which are used in the DENOISER are exceptional. They
boast extreme linearity and very low distortion characteristics. To complement this design the choice of
components includes high tolerance resistors and capacitors, detented potentiometers and several other
stringently selected elements.
1. INTRODUCTION