Archontis Politis: Reproducing recorded spatial sound scenes – Parametric and non-parametric approaches

When: Monday 1st April 2019 @ 5:30 PM

Where: Room 4.31/4.33, Informatics Forum, 10 Crichton St, University of Edinburgh

Title: Reproducing recorded spatial sound scenes – Parametric and non-parametric approaches

Speaker: Dr Archontis Politis (Tampere University, Finland)


Spatial sound reproduction methods for recorded sound scenes are an active field of research, in parallel with evolving vision-related or multi-modal technologies that aim to deliver a new generation of immersive multimedia content to the user. Contrary to previous channel-based surround approaches, modern spatial audio requirements demand methods that can handle fully-immersive content, and are flexible in terms of rendering capabilities to various playback systems. This presentation gives an overview of such methods, with a distinction between parametric and non-parametric methods. Non-parametric methods make no distinction of the sound scene itself, and distribute the recordings to the playback channels based on specifications of the recording setup and the playback system only. Parametric methods assume additionally a model of the sound scene content and aim to adaptively estimate its parameters from the recordings. Some representative approaches from both categories are presented, with emphasis on some of the methods co-developed by the presenter at the Acoustics Lab of Aalto University, Finland.

Speaker Bio

Archontis Politis obtained his M.Eng. degree in Civil Engineering at Aristotle’s University of Thessaloniki, Greece, and his M.Sc. degree in Sound & Vibration Studies at ISVR, University of Southampton, UK, in 2006 and 2008 respectively. From 2008 to 2010 he worked as a graduate acoustic consultant at Arup Acoustics, Glasgow, UK, and as a researcher in a joint collaboration between Arup Acoustics and the Glasgow School of Arts, on interactive auralization of architectural spaces using 3D sound techniques. In 2016 he obtained his doctoral degree on the topic of parametric spatial sound recording and reproduction from Aalto University, Finland. He has also completed an internship at the Audio and Acoustics Research Group of Microsoft Research, during summer of 2015. He is currently a post-doctoral researcher at Tampere University, Finland. His research interests include spatial audio technologies, virtual acoustics, array signal processing and acoustic scene analysis.