I'm Mathias Otto Widtskiöld, an audio restoration specialist with over 20 years of experience in restoration, intelligibility and audio quality control. I diagnose and repair complex issues across speech and music, preserving natural sound while removing artifacts. I deliver broadcast-ready, platform-compliant audio for institutional, corporate and streaming environments, and I lead projects for multilingual events and policy podcasts to ensure clarity, consistency and listener comfort.…

Mathias Otto Widtskiöld

I'm Mathias Otto Widtskiöld, an audio restoration specialist with over 20 years of experience in restoration, intelligibility and audio quality control. I diagnose and repair complex issues across speech and music, preserving natural sound while removing artifacts. I deliver broadcast-ready, platform-compliant audio for institutional, corporate and streaming environments, and I lead projects for multilingual events and policy podcasts to ensure clarity, consistency and listener comfort.…

Available to hire

I’m Mathias Otto Widtskiöld, an audio restoration specialist with over 20 years of experience in restoration, intelligibility and audio quality control. I diagnose and repair complex issues across speech and music, preserving natural sound while removing artifacts.

I deliver broadcast-ready, platform-compliant audio for institutional, corporate and streaming environments, and I lead projects for multilingual events and policy podcasts to ensure clarity, consistency and listener comfort.

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Language

English
Fluent
Swedish
Fluent
German
Fluent
French
Fluent
Dutch
Advanced
Spanish; Castilian
Beginner

Work Experience

Founder | Mixing, Mastering & Dolby Atmos Engineering at Mottow Sound
January 1, 1999 - Present
Mixing and mastering projects for artists in stereo and immersive formats. Delivering Atmos-ready masters for Apple Music, Tidal, and Amazon Music HD. Restoring and remastering legacy recordings for modern platforms.
Podcast Editor at European Policy Centre
January 1, 2022 - Present
Editing, mixing, and mastering narrative podcasts for global audiences. Ensuring clarity, dynamic consistency, and broadcast-level polish.
Founder | Mixing, Mastering & Dolby Atmos Engineering at Mottow Sound
January 1, 1999 - Present
Mixing and mastering projects for artists in stereo and immersive formats. Delivering Atmos-ready masters for Apple Music, Tidal, and Amazon Music HD. Restoring and remastering legacy recordings for modern platforms.
Podcast Editor at European Policy Centre
January 1, 2022 - Present
Editing, mixing, and mastering narrative podcasts for global audiences. Ensuring clarity, dynamic consistency, and broadcast-level polish.
Founder | Mixing, Mastering & Dolby Atmos Engineering at Mottow Sound
January 1, 1999 - Present
Founded Mottow Sound in Brussels to provide mixing and mastering services for stereo and immersive formats. Responsible for delivering Atmos-ready masters for major streaming platforms (Apple Music, Tidal, Amazon Music HD), and for restoring and remastering legacy recordings for modern releases. Oversaw Dolby Atmos workflow, clients, and project delivery from concept to final master.
Podcast Editor at European Policy Centre
January 1, 2022 - Present
Edited, mixed, and mastered narrative podcasts for a global audience. Ensured clarity, dynamic consistency, and broadcast-level polish across episodes.
Founder & Lead Engineer at Mottow Sound
January 1, 2000 - Present
Audio restoration, mastering and QC across music and speech. Solves complex artifact issues (noise, distortion, clipping) while preserving natural sound.
Senior Audio Engineer at Brussels SQUARE
January 1, 2008 - Present
Lead engineer for conferences and multilingual events. Designed and operated audio systems ensuring clarity and reliability.
Meeting Coordinator at European Parliament
January 1, 2020 - January 1, 2022
Ensured intelligibility and reliability for multilingual institutional meetings and hybrid sessions.

Education

BA Human Resource management at Vesalius College/VUB
September 1, 2000 - July 10, 2004
Certified Audio Engineer at Alchemea College London
September 1, 2005 - July 10, 2008
Certified Mastering Engineer at Mastering Academy
January 1, 2020 - December 31, 2021
Certified Mastering Engineer at Streaky Mastering Academy
January 11, 2030 - September 13, 2025
Certified Audio Mastering Engineer at Berklee College of Music
January 11, 2030 - September 13, 2025
BA Human Resource Management at Vesalius College
January 11, 2030 - May 6, 2026

Qualifications

Certified Mastering Engineer - Streaky Mastering Academy
January 1, 2020 - December 31, 2021
Certified Audio Mastering Engineer - Berklee College of Music
January 1, 2020 - December 31, 2021
Certified Mastering Engineer
January 1, 2020 - December 31, 2021
Certified Mastering Engineer
January 1, 2020 - December 31, 2021
Certified Audio Mastering Engineer
January 1, 2020 - December 31, 2021
Mastering Academy – Certified Mastering Engineer
January 1, 2020 - December 31, 2021
Streaky Mastering Academy – Certified Mastering Engineer
January 11, 2030 - September 13, 2025
Berklee College of Music – Certified Audio Mastering Engineer
January 11, 2030 - September 13, 2025
Avid Certified Pro Tools Specialist
January 11, 2030 - May 6, 2026
Certified Mastering Engineer – Mastering Academy
January 11, 2030 - May 6, 2026
Certified Audio Mastering Engineer – Berklee Meyer Sound SIM 3
January 11, 2030 - May 6, 2026

Industry Experience

Media & Entertainment, Government, Professional Services, Non-Profit Organization