Cedar Duo Series Bedienungsanleitung
The Duo Series
declickle and auto dehiss
Version 1.2
19 September 2004
Copyright CEDAR Audio Ltd, © 2004
CEDAR is a registered trademark of CEDAR Audio Ltd
Duo, declickle and auto dehiss are trademarks of CEDAR Audio Ltd
E&OE, Subject to revision at the Company’s sole discretion
interstage
Phistersvej 31, 2900 Hellerup, Danmark
Telefon 3946 0000, fax 3946 0040
www.interstage.dk
-pro audio with a smile
CEDAR Duo
– declickle and auto dehiss
This page left blank
Table Of Contents
i
Table Of Contents
Introducing the CEDAR Duos ........................................................................................... 1
Specifications and CE Certificates..................................................................................... 2
Contact Information....................................................................................................... 4
Technical Support.......................................................................................................... 5
Safety Instructions ........................................................................................................ 6
Getting Started ............................................................................................................. 7
Front Panel Indicators and Controls .................................................................................. 8
General Set-up and Connections ...................................................................................... 9
Memories ................................................................................................................... 14
Remote Control (MIDI) Implementation .......................................................................... 16
Declickle: Removing impulsive noises ............................................................................. 18
Declickle tutorial ......................................................................................................... 20
An Introduction to Click and Crackle Removal .................................................................. 21
Auto dehiss: Reducing broadband noise .......................................................................... 26
Auto dehiss tutorials .................................................................................................... 30
A Short History of Noise Reduction ................................................................................. 34
Licence and Limited Warranty........................................................................................ 37
CEDAR Duo
– declickle and auto dehiss
ii
This page left blank
CEDAR Duo
– declickle and auto dehiss
1
Introducing the CEDAR Duos
CEDAR Duo declickle module
CEDAR Duo auto dehiss module
Thank you for purchasing this CEDAR Duo audio restoration module. It is one of a family of the
world’s most advanced and most effective noise removal units, and it offers outstanding
processing power and performance. Quality, speed and simplicity are paramount considerations
in the Duo design, and both units are intended for professional use. Features include the
following:
■Flexibility
Both Duo models handle a wide range of audio restoration requirements.
■Portability
Each Duo is a compact, lightweight unit designed to fit a standard 1U rack space.
■Audio interfaces
Duos incorporate 96kHz, 24-bit digital audio interfaces conforming to the AES/EBU and SPDIF
standards.
■Power
Their universal power supplies means that Duos work anywhere in the world.
■Processor
Two, powerful SHARC processors ensure that a Duo will handle the most complex processing
requirements.
CEDAR Duo
– declickle and auto dehiss
2
Specifications and CE Certificates
General:
Power supply: 85–260VAC; 50–60Hz
I/O type: Digital PCM
Power consumption: 15W (standby 1W)
I/O resolution: 24 bits
Overall dimensions: 45 x 483 x 240mm
Sample rate: 30–100kHz
Weight: 3kg (net); 4kg (gross)
Data format: SPDIF or AES/EBU
Processor: 400 Mflops (peak)
Group delay (milliseconds):
declickle
(processing)
auto dehiss
(processing)
44.1kHz
190ms
463ms
48kHz
174ms
458ms
88.2kHz
95ms
461ms
96kHz
87ms
456ms
In Bypass, each unit has a latency of less than five samples, irrespective of sample rate.
EMC Regulations:
In order to comply fully with EMC regulations, a Duo should be connected using metal-shelled
connectors and good quality shielded cable suitable for digital audio.
CEDAR Duo
– declickle and auto dehiss
3
Declaration of conformity:
Date of issue: 1 April 2004
Equipment: CEDAR Duo
Manufacturer: CEDAR Audio Ltd
Address: 20 Home End, Fulbourn, Cambridge CB1 5BS, UK
This is to certify that the aforementioned equipment, when used in accordance with the
instructions in this manual, fully conforms to the protection requirements of the following EC
Council Directives: on the approximation of the laws of the member states relating to:
n89/336/EEC Electromagnetic Compatibility
Applicable standards: EN 50081-1:92
EN 50082-1:92
n73/23/EEC Low Voltage Equipment
Applicable standard: BSEN 60-065:1994
CEDAR Duo
– declickle and auto dehiss
4
Contact Information
Headquarters:
Address:
CEDAR Audio Limited, 20 Home End, Fulbourn, Cambridge, CB1 5BS,
United Kingdom
Telephone and Fax:
T: +44 1223 881771 F: +44 1223 881778
Email:
support@cedaraudio.com
USA Office:
Address:
CEDAR Audio USA, 43 Deerfield Road, Portland, ME 04101-1805, USA
Telephone and Fax:
T: +1 207 828 0024 F: +1 207 773 2422
Email:
cedarusa@cedaraudio.com
Asian Office:
Address:
CEDAR Asia (Mailing address)
Attention: David William Robinson, Tanglin Post Office, PO Box 282,
Singapore 912410
Telephone and Fax:
T: +66 1 822 9227 F: +66 2 619 1277
Email:
asia@cedaraudio.com
Web:
Web:
www.cedaraudio.com
Worldwide Dealer List:
For an up-to-date dealer list, please visit www.cedaraudio.com
CEDAR Duo
– declickle and auto dehiss
5
Technical Support
We hope that you will never need to read this page, but should you experience difficulties with
your CEDAR Duo, please contact your local dealer or CEDAR office. Alternatively, you may send
an email to support@cedaraudio.com. In either case, please provide the following details:
■Your Duo hardware and software version numbers. (See General Set-up and Connections)
■A precise description of the problem
■All details shown in the status page.
Thank you.
CEDAR Duo
– declickle and auto dehiss
6
Safety Instructions
Read these instructions, follow them, and save them for future
reference.
■Water and moisture
The unit must not be exposed to rain or moisture. Furthermore, if the unit is brought directly
from a cold environment into a warm one, moisture may condense inside it. This, in itself, will
not cause damage, but may cause electrical shorting. This could damage the unit, and even
cause danger to life. ALWAYS allow a Duo to reach ambient temperatures naturally before
connecting the mains power.
■Mounting and ventilation
The unit may be mounted in a 19" EIA rack, or placed on a flat, stable surface. Do not subject it
to strong sunlight, excessive dust, mechanical vibration or periodic shocks. A Duo is not
susceptible to heat build-up, but should be installed away from heat sources such as radiators,
and audio devices such as amplifiers that produce large amounts of heat. If it is used as a free-
standing unit, the supplied rubber feet should be fixed to the base of the unit.
■Power sources
Each Duo features a universal power supply that will work safely on any mains supply in the
ranges 85V to 260V, 50Hz or 60Hz AC only. The unit should always be grounded (or ‘earthed’),
and power connectors should be routed so that they will not be walked on or pinched.
A Duo is connected to the mains power as long as it is plugged in to a mains supply, so if it is
not to be used for an extended period, unplug it from the wall. Pull the connector out by the
plug, never by the cord itself.
■Connections
Turn off the power to all equipment before making any connections.
■Cleaning
Clean the unit only with a dry cloth. Never use abrasive pads or liquid cleaners such as alcohol
or benzene.
■Damage requiring service
A Duo contains no user-serviceable parts and should on no account be opened or dismantled by
unauthorised personnel. It should be returned to qualified service agents when it has been
exposed to liquids, when it fails to function correctly, when it has been dropped, or when the
case is damaged.
Dieses Handbuch passt für folgende Modelle
2
Inhaltsverzeichnis
Andere Cedar Stereoanlage Handbücher
