CONF
Taghizadeh_ICASSP15_2015/IDIAP
Robust Microphone Placement for Source Localization from Noisy Distance Measurements
Taghizadeh, Mohammad J.
Haghighatshoar, Saeid
Asaei, Afsaneh
Garner, Philip N.
Bourlard, HervĂ©
Generalized Trust Region Subproblem (GTRS).
Robust microphone placement
Source localization
EXTERNAL
http://publications.idiap.ch/attachments/papers/2015/Taghizadeh_ICASSP15_2015.pdf
PUBLIC
IEEE 40th International Conference on Acoustics, Speech and Signal Processing (ICASSP)
2015
IEEE
2579-2583
1520-6149
10.1109/ICASSP.2015.7178437
doi
We propose a novel algorithm to design an optimum array geometry for source localization inside an enclosure. We assume a square-law decay propagation model for the sound acquisition so that the additive noise on the measured source-microphone distances is proportional to the distances regardless of the noise distribution. We formulate the source localization as an instance of the ``Generalized Trust Region Subproblem'' (GTRS) whose solution gives the location of the source. We show that by suitable selection of the microphone locations, one can tremendously decrease the noise-sensitivity of the resulting solution. In particular, by minimizing the noise-sensitivity of the source location in terms of sensor positions, we find the optimal noise-robust array geometry for the enclosure. Simulation results are provided to show the efficiency of the proposed algorithm.