Biography

Paulo Marins has a Bachelor of Arts degree in Art Education/Music from Universidade de Brasilia, Brazil and a Masters in Music Technology from Indiana University at IUPUI, United States. He started his PhD at Institute of Sound Recording in October 2005 with the support of Capes Foundation, Ministry of Education of Brazil.

Publications

P. Marins, F. Rumsey, and S. Zielinski. Uncovering the multidimensional perceptual space of low-bit rate multi-channel audio codecs. Presented at the Reproduced Sound 24/Institute of Acoustics Conference, Brighton, United Kingdom, 20-21 Nov 2008.

P. Marins, F. Rumsey, and S. Zielinski. Unravelling the Relationship between Basic Audio Quality and Fidelity Attributes in Low Bit-Rate Multi-Channel Audio Codecs. Presented at the AES 124th Convention, Paper 7335, Amsterdam, the Netherlands, 17-20 May 2008.

P. Marins, F. Rumsey, and S. Zielinski. The Relationship between Basic Audio Quality and Selected Artefacts in Perceptual Audio Codecs - Part II - Validation Experiment. Presented at the AES 122nd Convention, Paper 6745, Vienna, Austria, 05-08 May 2007.

P. Marins, F. Rumsey, and S. Zielinski. The Relationship Between Selected Artefacts and Basic Audio Quality in Perceptual Audio Codecs. Presented at AES 120th Convention, Paper 6745, Paris, France, 20-23 May, 2006.

Research Project

Beyond "Basic Audio Quality": Evaluating the perceived quality of spatial audio codecs

Paulo Marins
Francis Rumsey
Slawek Zielinski

Spatial audio coding is becoming increasingly important, and scalable codecs for variable delivery bandwidths are likely to become increasingly common.

Low bit rate coders have traditionally been evaluated in terms of basic audio quality using ITU standards. However, these tests do not isolate the differences that are specifically spatial, or give any indication of the relative perceptual importance of different codec artefacts.

The research to be conducted by Paulo will involve improved methods for evaluating perceived quality of spatial audio codecs.