Towards fully uncalibrated room reconstruction with sound

This paper presents a novel approach for room reconstruction using unknown sound signals generated in different locations of the environment. The approach is very general, that is fully uncalibrated, i.e. the locations of microphones, sound events and room reflectors are not known a priori. We show that, even if this problem implies a highly non-linear cost function, it is still possible to provide a solution close to the global minimum. Synthetic experiments show the proposed optimization framework can achieve reasonable results even in the presence of signal noise.

[1]  Alessio Del Bue,et al.  A Bilinear Approach to the Position Self-Calibration of Multiple Sensors , 2012, IEEE Transactions on Signal Processing.

[2]  Sakari Tervo,et al.  Estimation of reflective surfaces from continuous signals , 2010, 2010 IEEE International Conference on Acoustics, Speech and Signal Processing.

[3]  Augusto Sarti,et al.  Geometric reconstruction of the environment from its response to multiple acoustic emissions , 2010, 2010 IEEE International Conference on Acoustics, Speech and Signal Processing.

[4]  Vittorio Murino,et al.  Synthesis of unequally spaced arrays by simulated annealing , 1996, IEEE Trans. Signal Process..

[5]  Martin Vetterli,et al.  Acoustic echoes reveal room shape , 2013, Proceedings of the National Academy of Sciences.

[6]  Cha Zhang,et al.  Geometrically Constrained Room Modeling With Compact Microphone Arrays , 2012, IEEE Transactions on Audio, Speech, and Language Processing.

[7]  C. D. Gelatt,et al.  Optimization by Simulated Annealing , 1983, Science.

[8]  Marco Crocco,et al.  Stochastic and Analytic Optimization of Sparse Aperiodic Arrays and Broadband Beamformers With Robust Superdirective Patterns , 2012, IEEE Transactions on Audio, Speech, and Language Processing.

[9]  Augusto Sarti,et al.  Localization of planar acoustic reflectors from the combination of linear estimates , 2012, 2012 Proceedings of the 20th European Signal Processing Conference (EUSIPCO).

[10]  Sakari Tervo,et al.  3D room geometry estimation from measured impulse responses , 2012, 2012 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP).

[11]  Richard Heusdens,et al.  Auto-localization in ad-hoc microphone arrays , 2013, 2013 IEEE International Conference on Acoustics, Speech and Signal Processing.