Behringer SNR2000 manual Introduction, Design concept

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.

+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.

6 1. INTRODUCTION