background image

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 Studio applications

3.2.1 Noise reduction during playback

For this standard application, the DENOISER is inserted after the master or multitrack machine, i.e. between

tape machine and mixer (or amplifier). A cassette recorder or similar machine may also be the signal source.

Fig. 3.1: Noise reduction during playback

1. Set up your equipment as usual, while bypassing your DENOISER.
2. Turn on the BEHRINGER DENOISER and adjust the controls as desired (if necessary, read chapter 1.3

“Control elements” once again).

3. Check your settings by making A/B comparisons using each channel’s IN/OUT switch.

3.2.2 Noise reduction during recording

The noise reduction effect may be increased by using the DENOISER not only during playback but also when

recording. For this purpose, insert the unit directly after the master output of the mixer into the recording path

of the master or multitrack machine. Set up the unit as described in the previous section “Noise reduction

during playback”.
In particularly difficult cases, we recommend using the DENOISER both during recording 

and

 playback.

3. APPLICATIONS

Summary of Contents for Denoiser SNR2000

Page 1: ...DENOISER SNR2000 Version 2 3 June 2002 User s Manual www behringer com ENGLISH...

Page 2: ...of air through the ventilation openings Heat The appliance should be situated away from heat sources such as radiators heat registers stoves or other appliances including amplifiers that produce heat...

Page 3: ...member of the BEHRINGER family With your highly competent suggestions for new products you ve greatly contributed to shaping our company and making it successful In return we guarantee you uncompromi...

Page 4: ...te gain reduction and cut off frequency meters s Dual mono or true stereo couple function s Servo balanced inputs and outputs on XLR and 1 4 TRS connectors s Relay controlled hard bypass with auto byp...

Page 5: ...ter 14 2 5 The COUPLE function 15 3 APPLICATIONS 15 3 1 Initial settings of the DENOISER 15 3 2 Studio applications 16 3 2 1 Noise reduction during playback 16 3 2 2 Noise reduction during recording 1...

Page 6: ...ack 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 h...

Page 7: ...rinted next to these markers and can be set to another voltage by turning the fuse holder by 180 CAUTION This instruction does not apply to export models exclusively designed e g for 115 V operation T...

Page 8: ...ownward expansion When however the ratio is set to 6 1 the DENOISER functions as noise gate 7 This eight segment GAIN REDUCTION meter indicates the amount of expansion 8 The FILTER IN OUT switch activ...

Page 9: ...to set up the controls correctly to suit any application The noise reduction effect of the expander section is active only when signal levels are low The filter section on the other hand is active at...

Page 10: ...nough so that high frequencies will not be cut off Thus the sound of signals with a high slope such as percussive instruments will not be modified 2 However if the control times are too fast flutter m...

Page 11: ...ould be set at 800 Hz allowing for the maximum possible amount of noise reduction The cut off frequency should be increased if you want to affect noise in the upper portion of a signal only or if too...

Page 12: ...arisons with the FILTER IN OUT switch to find out which setting suits your demands Please also note that after power up the unit needs a few minutes to warm up While the unit calibrates automatically...

Page 13: ...material With low ratios and a slight expansion the transition is gentle whereas higher ratios and increasing expansion will result in harder transitions within the curve The IRC expander is therefor...

Page 14: ...dicates that for every 1 dB decrease in input level below the threshold there will be resultant corresponding decrease in the output level of 2 dB A ratio of 1 6 indicates that for a 1 dB decrease in...

Page 15: ...ise reduction while still tracking in stereo If using the COUPLE switch it is recommended that all controls are set identically to ensure proper tracking 3 APPLICATIONS In this section several typical...

Page 16: ...n during playback 1 Set up your equipment as usual while bypassing your DENOISER 2 Turn on the BEHRINGER DENOISER and adjust the controls as desired if necessary read chapter 1 3 Control elements once...

Page 17: ...features subgroup inserts you can reduce noise in subgroups separately 2 You can also connect monitor or effects buses aux sends to the BEHRINGER DENOISER and route the signal back to a channel input...

Page 18: ...tly reduced with the DENOISER Tape cassette copies will provide low noise and higher dynamics Particularly old and noisy tapes can be new lease of live with the DENOISER If adjusted properly it will p...

Page 19: ...n a drastic increase of noise The DENOISER can solve these problems too Insert the unit into the individual microphone channels line inserts or into the master monitor or effects buses Fig 3 7 Reducin...

Page 20: ...the human ear is that it can detect the widest range of amplitude changes from the slightest whisper to the deafening roar of a jet plane If one tried to record or reproduce this wide sound spectrum w...

Page 21: ...miters By measuring the dynamic range of instruments in live recording situations you will experience that extreme amplitudes occur which often lead to overload on the various devices in the signal ch...

Page 22: ...c noise cannot be avoided This effect is similar when playing a tape The undirectional magnetic particles passing the audio head can also cause uncontrolled currents and voltages The resulting sound o...

Page 23: ...19 rack unit 1 3 4 Please allow at least an additional 4 depth for the connectors on the back panel Be sure that there is enough space around the unit for cooling and please do not place the DENOISER...

Page 24: ...ance 80 kOhms balanced Nominal operating level 10 dBV to 4 dBu switchable Max input level 20 dBu balanced and unbalanced Analog outputs Connectors XLR and 1 4 TRS Type Electronically servo balanced ou...

Page 25: ...tereo tracking Indicators 8 LED gain reduction 1 2 4 6 10 15 20 30 dB 8 LED filter bandwidth 1 1 5 2 2 3 3 5 7 5 12 20 kHz LED indicator for each function switch Power supply Mains voltages USA Canada...

Page 26: ...nsible for any cost resulting from such a modification adaptation 3 Free inspections and maintenance repair work are expressly excluded from this warranty in particular if caused by improper handling...

Reviews: