Claus Trelby

Written By Loic Maestracci

Chief Engineer, Marshmellow Skies Recording Studio

Claus Trelby is an Emmy-nominated Engineer, Producer, Chief Engineer, and Director of Technology with 30+ years of experience working with legendary artists including Joni Mitchell, Eric Clapton, Sting, Herbie Hancock, Peter Frampton, and Christine McVie. As Chief Engineer of Marshmellow Skies, he specializes in immersive audio and Dolby Atmos, including five Joni Mitchell albums and the 2024 Grammy-winning Joni Mitchell at Newport. A leading spatial-audio consultant, Claus also contributes to the development and global implementation of Eclipsa Audio, providing technical expertise to industry leaders including Google and Samsung while advancing immersive sound without compromising artistic intent.

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Nov 13
Eclipsa Audio: Immersive Music from the Engineering Desk to Everyday Content Creation

Speakers: Michael Romanowski, Claus Trelby, Jan Skoglund,

Six-time Grammy-winning mastering engineer Michael Romanowski, legendary immersive mixer Claus Trelby, and Google engineer Jan Skoglund explore how open, royalty-free standards like IAMF are democratizing 3D sound. Moving from creative spatial mixing to wide-scale delivery, this panel provides a practical look at mixing seminal records, managing spatial translation, and leveraging open tools to upload pristine immersive audio directly to platforms like YouTube.

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Loic Maestracci
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