BEHRINGER SNR2000 - Manual

5 DENOISER SNR2000 TABLE OF CONTENTS 1. INTRODUCTION ..................................................................................................................... 6 1.1 The design concept ...........................................................................................................

6 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 c...

9 DENOISER SNR2000 15 FUSE HOLDER / VOLTAGE SELECTOR . Please make sure that your local voltage matches the voltage indicated on the unit, before you attempt to connect and operate the DENOISER. Blown fuses may only be replaced by fuses of the same type and rating. Some models allow for inserting th...

10 DENOISER SNR2000 Fig. 2.1: Operation of the dynamic filter With a low-frequency input signal present, the dynamic filter will reduce any mid or high-band noise as well as any disturbing noise tails. If the input signal is dominated by high-frequency components, however, the dynamic filter will op...

12 DENOISER SNR2000 2.2.4 AUTO switch The AUTO switch allows to automatically control release time and cut off frequency of the TAC filter. Thus, by depressing the AUTO switch, the RELEASE and CUT OFF controls are deactivated. Release time and cut off frequency of the filter are now automatically de...

13 DENOISER SNR2000 Fig. 2.3: The function of an expander 2.4 The IRC expander of the DENOISER The response characteristics of conventional expanders tend to cut the signal abruptly and the result is generally unacceptable, since the effect is clearly audible. “Inaudible” expansion, however, require...

15 DENOISER SNR2000 2.5 The COUPLE function The couple switch links channel 1 and channel 2. This includes each channel’s expander detection and filter detection circuits. Although this allows the two channels to track each other for stereo applications, it should be pointed out that this is not a m...

16 DENOISER SNR2000 We recommend the following control settings: Controls Settings IN/OUT switch IN EXPANDER switch IN THRESHOLD control -50 dBu RELEASE control 2 seconds RATIO control 3:1 FILTER switch IN SENSITIVITY switch -30 dBu AUTO switch IN Tab. 3.2: Initial settings of the DENOISER 3.2 Studi...

20 DENOISER SNR2000 Fig. 3.8: Noise reduction in Hi-Fi systems The BEHRINGER DENOISER can be used for: s disc and tape recordings s video and audio cassette playback purposes s TV reception s radio reception 4. TECHNICAL BACKGROUND 4.1 What are audio dynamics? A remarkable feature of the human ear i...

23 DENOISER SNR2000 4.7 The “single-ended” principle In contrast to conventional noise reduction systems using compressors and expanders, the DENOISER is purely a “single-ended” system. “Single-ended” means that the noise reduction system is not based on a process combining both record and playback ...