Announcing CEDAR sdnx: high-resolution noise reduction for Sound Devices 8-Series mixer/recorders

CEDAR sdnx for Sound Devices

25 January 2021

  Introducing CEDAR sdnx (Paul Isaacs, Director of Product Management and Design, Sound Devices)

Developed by CEDAR for Sound Devices, sdnx is a noise suppression technology designed specifically for the Scorpio and other 8-Series mixer/recorders. Available in 2-, 4- and 8- instance configurations, it can be run on any combination of channels and busses selected by the user at sample rates up to and including 96kHz.

Drawing upon CEDAR's decades-long expertise in the field of noise reduction*, sdnx differs from hardware solutions such as the CEDAR DNS 2 and DNS 8D dialogue noise suppressors by offering a modified algorithm optimised for Sound Devices systems and a simplified user interface with just a single attenuation control per instance. Together with its near-zero latency, this makes it ideal for use in the field, allowing users to record clean audio for dailies and confidence checking as well as providing viable alternatives to the mixes and isos supplied for post production.

"Over the last few decades, CEDAR has become synonymous with real-time, low latency, and artefact-free audio restoration and noise suppression. That's why sound professionals put their trust in them everyday," said Paul Isaacs, Director of Product Management and Design at Sound Devices. "We are super thrilled and honored to collaborate with the CEDAR team to bring their highly-regarded noise suppression technology to our 8-Series mixer-recorders. This will provide our customers with a powerful tool to capture dialogue in noisy environments."

"We had been supplying a small number of products to location sound recordists for fifteen years, but when in 2016 we released our first product designed specifically for them - the CEDAR DNS 2 dialogue noise suppressor - we found that many units were being bought for use alongside Sound Devices recorder/mixers," explained Gordon Reid, Managing Director of CEDAR Audio Ltd. "Pretty soon, customers started to ask us whether we were planning to incorporate some form of noise suppression within the recorders themselves. We hadn't planned on this, but when we spoke to Sound Devices we found that there's a great technical synergy between the two companies. It proved to be really simple and pleasant to work with them, and we're genuinely excited that a specifically crafted version of CEDAR noise suppression will now be available on their systems."

This is the first time CEDAR technology has been available in any portable mixer/recorder, now making CEDAR's noise suppression available in ultra-light portable recording setups.

* CEDAR Audio is the proud recipient of an Academy Award® for its noise suppression which, in the words of one Academy member is "probably used on every major movie coming out of Hollywood".


To enquire about pricing, contact

To purchase or learn more about CEDAR sdnx visit

Technical note:

CEDAR sdnx is compatible with 8-Series mixer-recorders running firmware version 7.40 or higher. Existing users can upgrade earlier systems by visiting

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CEDAR Audio Limited, 20 Home End, Fulbourn, Cambridge, CB21 5BS, United Kingdom.
t: +44 1223 881771