Nicolas Epain

I am a post-doc researcher at CARLab. I am mainly interested in spatial audio.

Research

My main research interest is the analysis and synthesis of spatial sound fields. More specifically, I try to answer the following questions:

  • How to record and analyse the spatial properties of the sound field ?
  • How to recreate an arbitrary sound field over a spatially extended area ?
  • How to detect and track sound sources ? How to extract the corresponding signals ?

During my previous post-doc, at France Telecom R&D (Lannion, France), I focused on the design and evaluation of spherical and cylindrical microphone arrays. This resulted in the development of a microphone array having an extended frequency range.

Although I am still interested in microphone arrays at CARLab, I am involved in several other research projects:

  • Objective and subjective evaluation of 3d audio playback methods over loudspeaker arrays
  • Individualised binaural rendering of sound fields recorded with microphone arrays
  • Development of a Blind Source Separation method based on Independent Component Analysis in the spherical harmonic domain
  • Application of Compressed Sensing techniques to the analysis and synthesis of spatial sound fields.

Scientific Publications

Journal Papers

  • N. EPAIN, F. ZOTTER and C.T. JIN,  “Ambisonic Decoding With Constant Angular Spread”. Acta Acustica united with Acustica, 100(5): 928–936, September/October 2014.
  • C.T. JIN, P. GUILLON, N. EPAIN, et al. “Creating the Sydney York Morphological and Acoustic Recordings of Ears Database”. IEEE Trans. on Multimedia, 16(1): 37–46, 2014.
  • C.T. JIN, N. EPAIN and A. PARTHY. “Design, Optimization and Evaluation of a Dual-Radius Spherical Microphone Array”. IEEE Trans. on Audio, Speech and Language Processing, 22(1):193– 204, 2014.
  • N. EPAIN and C.T. JIN. “Independent component analysis using spherical microphone array”. Acta Acust. United Ac., 98(1):91–102, 2012.
  • A. PARTHY, N. EPAIN, and C.T. JIN. “Comparison of the measured and theoretical performance of a broadband circular microphone array”. J. Acoust. Soc. Am., 130(6):3827–3837, 2011.
  • N. EPAIN and E. FRIOT. “Active control of sound inside a sphere via control of the acoustic pressure at the boundary surface”. J. Sound Vibrat., 299(3):587–604, January 2007.

Conference Papers

  • R. ZOLFAGHARI, N. EPAIN, C.T. JIN, A. TEW AND J. GLAUNÈS “A Multiscale LDDMM Template Algorithm for Studying Ear Shape Variations”. In Proceedings of the 2014 International Conference on Signal Processing and Communication Systems (ICSPCS), Gold Coast, Australia, December 2014.
  • Y. CHEN, M. ZHU, N. EPAIN AND C.T. JIN “Unsupervised feature learning on monaural DOA estimation using convolutional deep belief networks”. In Proceedings of the 43rd International Congress on Noise Control Engineering (inter.noise 2014), Melbourne, Australia, November 2014.
  • M. SAMARAWICKRAMA, N. EPAIN, AND C.T. JIN “Super-Resolution Acoustic Imaging Using Non-Uniform Spatial Dictionaries”. In Proceedings of the 2014 International Conference on Audio, Language and Image Processing (ICALIP), Shanghai, China, July 2014.
  • N. EPAIN, T. NOOHI AND C.T. JIN “Sparse Recovery Method for Dereverberation”. In Proceedings of the REVERB Challenge, Florence, Italy, May 2014.
  • R. ZOLFAGHARI, N. EPAIN, C.T. JIN, J. GLAUNÈS AND A. TEW “Large Deformation Diffeomorphic Metric Mapping and Fast-Multipole Boundary Element Method provide new insights for Binaural acoustics”. In Proceedings of the ICASSP 2014, Florence, Italy, May 2014.
  • N. EPAIN and C.T. JIN “Super-resolution sound field imaging with sub-space pre-processing”. In Proceedings of the ICASSP 2013, Vancouver, Canada, May 2013.
  • P.K.T. WU, N. EPAIN and C.T. JIN “A super-resolution beamforming algorithm for spherical microphone arrays using a compressed sensing approach”. In Proceedings of the ICASSP 2013, Vancouver, Canada, May 2013.
  • T. NOOHI, N. EPAIN and C.T. JIN “Direction of arrival estimation for spherical microphone arrays by combination of independent component analysis and sparse recovery”. In Proceedings of the ICASSP 2013, Vancouver, Canada, May 2013.
  • D. CABRERA, L. MIRANDA, C. JIN and N. EPAIN “Spatial analysis of acoustic support on audito- rium stages: modelling and measurement using high-order transducers”. In Proceedings of Acoustics 2012, Fremantle, Australia, November 2012.
  • P. GUILLON, R. ZOLFAGHARI, N. EPAIN, C. JIN, J. THORPE, C. HETHERINGTON and A. TEW. “Creating the Sydney York Morphological and Acoustic Recordings of Ears Database”. In Proceedings of 2012 IEEE International Conference on Multimedia & Expo (ICME), Melbourne, Australia, July 2012.
  • N. EPAIN and C.T. JIN. “A robust sound field diffusivity estimator for spherical microphone arrays”. Invited presentation at the Acoustics 2012 Hong Kong Conference.
  • P.K.T. WU, N. EPAIN and C.T. JIN. “A dereverberation algorithm for spherical microphone arrays using compressed sensing techniques”.In Proceedings of the ICASSP 2012, Kyoto, Japan.
  • A. WABNITZ, N. EPAIN and C.T. JIN. “A frequency-domain algorithm to upscale ambisonic sound scenes”. In Proceedings of the ICASSP 2012, Kyoto, Japan.
  • A. WABNITZ, N. EPAIN, A. MCEWAN and C.T. JIN. “Upscaling ambisonic sound scenes using compressed sensing techniques”. In Proceedings of the 2011 IEEE Workshop on Applications of Signal Processing to Audio and Acoustics (WASPAA 2011), New Paltz, NY, USA.
  • N. EPAIN and C.T. JIN. “Considering VBAP’s role: an HOA and compressed sensing perspective”. Invited presentation at the AES 131th Convention, New York, USA, 2011.
  • A. WABNITZ, N. EPAIN, A. VAN SCHAIK and C.T. JIN. “Time-domain reconstruction of spatial sound fields using compressed sensing”. In Proceedings of the ICASSP 2011, Prague, Czech Republic.
  • A. WABNITZ, N. EPAIN, C.T. JIN and A. VAN SCHAIK. “Room acoustics simulation for multichannel microphone arrays”. In Proceedings of the International Symposium on Room Acoustics (ISRA 2010), Melbourne, Australia.
  • N. EPAIN, P. GUILLON, A. KAN, R. KOSOBRODOV, D. SUN, C.T. JIN, and A. VAN SCHAIK. “Objective evaluation of a three-dimensional sound field reproduction system”. In Proceedings of the 20th International Congress on Acoustics (ICA), Sydney, Australia, 2010.
  • N. EPAIN, C.T. JIN and A. VAN SCHAIK. “Blind source separation using independent component analysis in the spherical harmonic domain”. In Proceedings of the 2d International Symposium on Ambisonics and spherical acoustics, Paris, France, 2010.
  • N. EPAIN, C.T. JIN and A. VAN SCHAIK. “The application of compressive sampling to the analysis and synthesis of spatial sound fields”. In Proceedings of the AES 127th Convention, New York, USA, 2009.
  • N. EPAIN and J. DANIEL. “Towards not-so-spherical microphone arrays”. Presented at the Acoustics 2008 Conference, Paris, France.
  • N. EPAIN and J. DANIEL. “Improving spherical microphone arrays”. In Proceedings of the AES 124th Convention, Amsterdam, The Netherlands, 2008.
  • N. EPAIN and J. DANIEL. “Pushing the frequency limits of spherical microphone arrays”. In Proceedings of the HSCMA 2008 workshop, Trento, Italy, 2008.
  • N. EPAIN and E. FRIOT “3d reproduction of low-frequency sound fields using the boundary pressure control method”. In Proceedings of ACTIVE 2006, Adelaide, Australia, 2006.
  • N. EPAIN, E. FRIOT and M. WINNINGER “Expérience de contrôle actif global du bruit dans une sphère”. In Proceedings of the 8th Congrès Français d’Acoustique, Tours, France, 2006.
  • N. EPAIN, P. HERZOG, G. RABAU, and E. FRIOT “Preliminary work about the reproduction of sonic boom signals for perception studies”. In Proceedings of the 17th International Symposium on Non-linear Acoustics, State College, Pennsylvania, USA, 2005.
  • N. EPAIN and E. FRIOT “Indoor sonic boom reproduction using ANC”. In Proceedings of ACTIVE 2004, Williamsburg, Virginia, USA, 2004.