Related Manuals for Cedar DNS 4
Summary of Contents for Cedar DNS 4
- Page 1 DNS 4 dialogue noise suppressor OWNER’S MANUAL © 2022 CEDAR Audio Ltd Manual version 1.00 September 2022...
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Page 3: Table Of Contents
CEDAR DNS 4 dialogue noise suppressor Table of Contents Introduction to the DNS 4 ................5 Safety instructions ..................6 Setting up the DNS 4 ................7 The front panel ..................12 The process page ..................14 The channel setup page ................16 The global setup page .................. - Page 4 CEDAR DNS 4 dialogue noise suppressor Intentionally left blank Page 4...
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Page 5: Introduction To The Dns 4
CEDAR DNS 4 dialogue noise suppressor Introduction to the DNS 4 The DNS 4 is a further development of the DNS technology introduced in our Academy Award® winning DNS1000 and subsequent dialogue noise suppressors. Despite offering four channels of noise suppression, it is small, light and portable, and its slick user- interface allows users to obtain optimum results almost instantly and with the minimum of effort. -
Page 6: Safety Instructions
■ Mounting and ventilation You should place the DNS 4 on a flat, stable surface or in a suitable equipment bag. Do not subject it to strong sunlight, excessive dust, mechanical vibration or periodic shocks. -
Page 7: Setting Up The Dns 4
CEDAR DNS 4 dialogue noise suppressor Setting up the DNS 4 Page 7... - Page 8 CEDAR DNS 4 dialogue noise suppressor Intentionally left blank Page 8...
- Page 9 Power source A 12V PSU is included with the DNS 4 and this will work on any mains supply in the range 85V to 250V, 50/60Hz AC. Connect its output to the DNS 4 power input and then plug it into the mains supply.
- Page 10 CEDAR DNS 4 dialogue noise suppressor Audio setup The audio connectors are on the sides of the unit; analogue inputs are on the left, while analogue outputs and all digital I/O are on the right side. Connections of a similar function are grouped together, with the low channel numbers within each group towards the rear of the unit.
- Page 11 I/O is used, the internal 48kHz clock is used. When AES3 input 1&2 is connected, the clock is derived from that source. Operation at 44.1kHz, 48kHz and 96kHz is supported. There is a USB socket for updating the firmware. You can also obtain this manual from the DNS 4’s internal storage via USB. Page 11...
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Page 12: The Front Panel
CEDAR DNS 4 dialogue noise suppressor The front panel The DNS 4 front panel is divided into three sections: a set of three fixed-function buttons to the left, an OLED screen, plus six context-sensitive buttons and an encoder to the right. - Page 13 CEDAR DNS 4 dialogue noise suppressor Once the DNS 4 is powered up, you can press the Power/lock button a second time to lock the panel. When it’s locked, the Power/lock and Setup buttons continue to operate, but all the other controls are disabled. Hold down the Power/lock button for around three seconds to unlock the panel.
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Page 14: The Process Page
CEDAR DNS 4 dialogue noise suppressor The process page The DNS 4 boots into the Process page and returns to it from any other page after a short timeout. This displays information about all four channels simultaneously. ■ Input level meters The left of the display shows input level meters for each of the four channels. - Page 15 CEDAR DNS 4 dialogue noise suppressor The permissible combinations of groups are as follows: Channels: Independent First pair linked 1&2 Second pair linked 3&4 Two pairs linked 1&2 3&4 All linked 1&2&3&4 You create a group by pressing simultaneously the channel selection buttons for the first and last channels to be included in it.
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Page 16: The Channel Setup Page
CEDAR DNS 4 dialogue noise suppressor The channel setup page Pressing Setup once accesses the Channel setup page. ■ Digital inputs selected (see Global setup) If digital inputs are selected, the page displays: • the input source for the active channels (see Global setup) •... -
Page 17: The Global Setup Page
Select the analogue or digital inputs. If the input selection is set to digital and no valid digital signal is present at the digital input, a flashing cross will appear inside the AES1/2 or AES3/4 fields and the DNS 4 will not process audio. ■ Routing: Split mode operation In split mode, the signals presented to inputs 1&2 are duplicated and sent to channels... - Page 18 Principal uses: 1: integrates the DNS 4 into an analogue system 2: allows the DNS 4 to be used as a mic pre as well as a processor within an otherwise digital system 3: allows you to output analogue signals from a digital system 4: is digital-to-digital and all the analogue I/O is switched off to save power.
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Page 19: Using The Dns 4
CEDAR DNS 4 dialogue noise suppressor Using the DNS 4 Page 19... -
Page 20: Processing
The Learn button controls whether or not the noise detector adapts continuously to changes in the noise content within the audio signal. When it’s On, the DNS 4 continually identifies the power and spectral distribution of the noise. When it’s Off, the noise estimate is frozen at the last determined values and remains so until it’s switched on... - Page 21 CEDAR DNS 4 dialogue noise suppressor ■ Bias The encoder also provides control of the Bias, which is shown on the right-hand half of each channel’s display. Click the encoder to enable adjustment of the Bias, and click it again when you wish to switch back to controlling the Attenuation. The encoder will also revert to controlling the Attenuation after a short idle period.
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Page 22: Summary Of Operation
Summary of operation ■ Learn When Learn is on, the DNS 4 continually identifies the power and spectral distribution of the noise present. This is the normal mode of operation. When Learn is off, the noise identification is frozen at the last determined values. -
Page 23: Additional Information
CEDAR DNS 4 dialogue noise suppressor Additional information Page 23... - Page 24 CEDAR DNS 4 dialogue noise suppressor Intentionally left blank Page 24...
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Page 25: Declaration Of Conformity
CEDAR Audio Ltd will provide its customers with information about local organisations that can reprocess CEDAR products that have reached their end of use. Alternatively such products can be returned to CEDAR Audio Ltd in the UK at the owner’s cost and they will then be reprocessed correctly free of charge. -
Page 26: 3Rd-Party Licence
CEDAR DNS 4 dialogue noise suppressor 3rd-party Licence The CEDAR DNS 4 firmware includes certain elements that are distributed under the following licence. === FreeRTOS LICENSE === Copyright (C) 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved. Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation... -
Page 27: Contact Information
CEDAR DNS 4 dialogue noise suppressor Contact information Headquarters: CEDAR Audio Ltd, 20 Home End, Fulbourn, Cambridge, CB21 5BS, United Kingdom t: +44 1223 881771 e: support@cedaraudio.com USA Office: CEDAR Audio USA 82 Gilman Street, Portland, ME 04102, USA t: +1 207 828 0024 e: cedarusa@cedaraudio.com... -
Page 28: Specifications
CEDAR DNS 4 dialogue noise suppressor Specifications Line inputs Connectors: Channels 1&2 Balanced XLR3F Channels 3&4 Balanced TA3 mini-XLR Impedance: 10kΩ Nominal signal level (0dB gain): +4dBu ADC line up (0dB gain): +4dBu : -20dBFS Clipping level (0dB gain): +24dBu Dynamic range (0dB gain): >102dB (AES17 unweighted) - Page 29 CEDAR DNS 4 dialogue noise suppressor Line outputs Connector: Balanced TA3 mini-XLR Nominal signal level: +4dBu DAC line up: -20dBFS : +4dBu Maximum output: +24dBu Dynamic range: >96dB (AES17 unweighted) Minimum load impedance: 600Ω Short circuit protection: Indefinite Digital outputs...
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Page 30: Licence And Limited Warranty
‘the Company’ is CEDAR Audio Limited of 20 Home End, Fulbourn, Cambridge CB21 5BS, UK; ‘a/the System’ means an instance of the DNS 4 sound processing system comprising hardware and software developed by the Company; ‘this Document’ means this Licence and Limited Warranty. - Page 31 CEDAR DNS 4 dialogue noise suppressor FORCE MAJEURE The Company shall not be liable for any breach of its obligations hereunder resulting from causes beyond its reasonable control including, but not limited to, fires, strikes (of its own or other employees), insurrection or riots, embargoes, container shortages, wrecks or delays in transportation, inability to obtain supplies and raw materials, or requirements or regulations of any civil or military authority.
- Page 32 Copyright CEDAR Audio Ltd, © 2022 CEDAR is a registered trademark of CEDAR Audio Ltd DNS, DNS One, DNS 8D, DNS 8 Live, DNS 8 CS, DNS One, DNS Two, DNS 2, DNS 4, DNS1000, DNS1500, DNS2000 and DNS3000 are trademarks of CEDAR Audio Ltd...