Behringer SNR2000 manual Table of Contents

DENOISER SNR2000

TABLE OF CONTENTS

1. INTRODUCTION			6
1.1	The design concept		6
1.2	Before you begin		7
1.3	Control elements		7
	1.3.1	Front panel	8
	1.3.2	Rear panel	8

2. OPERATION			9
2.1	Operation of the filter section		9
	2.1.1	The masking effect	9
	2.1.2 The dynamic low-pass filter		9
2.2	The TAC filter of the DENOISER		10
	2.2.1	SENSITIVITY control	11
	2.2.2	CUT OFF control	11
	2.2.3	RELEASE control	11
	2.2.4	AUTO switch	12
	2.2.5	FREQUENCY meter	12
2.3	Operation of the expander section		12
2.4	The IRC expander of the DENOISER		13
	2.4.1	THRESHOLD control	14
	2.4.2	RELEASE control	14
	2.4.3	RATIO control	14
	2.4.4	GAIN REDUCTION meter	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	16
3.2.3 Reducing noise on subgroups, monitor and effects buses	17
3.2.4 Noise reduction for effects devices	18
3.2.5 Noise reduction during tape duplication	18
3.2.6 Noise reduction for instruments	18
3.2.7 Reducing noise in P.A. systems	19
3.2.8 Noise reduction in Hi-Fi and video applications	19

4. TECHNICAL BACKGROUND		20
4.1	What are audio dynamics?	20
4.2	Compressors/limiters	21
4.3	Expanders/noise gates	21
4.4	Downward expansion	22
4.5	Noise as physical phenomenon	22
4.6	Companders	22
4.7	The “single-ended” principle	23

5.	INSTALLATION		23
	5.1	Rack mounting	23
	5.2	Audio connections	23
6.	SPECIFICATIONS		24
7.	WARRANTY		26

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