TY - GEN
T1 - Sparse microphone array design for wideband beamforming
AU - Hawes, Matthew B.
AU - Liu, Wei
PY - 2013/10
Y1 - 2013/10
N2 - The sparse wideband sensor/microphone array design problem is highly nonlinear and it is traditionally solved by genetic algorithms, simulated annealing or other similar optimization methods. This is an extremely time-consuming process and an optimum solution is not guaranteed. In this work, this problem is studied from the viewpoint of compressive sensing (CS) and a CS-based method is provided. Although there have been CS-based methods proposed for the design of narrowband arrays, its extension to the wideband case is not straightforward, as there are multiple coefficients associated with each sensor/microphone and it is not sufficient to simply minimize the l1 norm of the weight coefficients to obtain a sparse array solution. To achieve this, a modified l1 norm minimization method is derived and its effectiveness is verified by design examples.
AB - The sparse wideband sensor/microphone array design problem is highly nonlinear and it is traditionally solved by genetic algorithms, simulated annealing or other similar optimization methods. This is an extremely time-consuming process and an optimum solution is not guaranteed. In this work, this problem is studied from the viewpoint of compressive sensing (CS) and a CS-based method is provided. Although there have been CS-based methods proposed for the design of narrowband arrays, its extension to the wideband case is not straightforward, as there are multiple coefficients associated with each sensor/microphone and it is not sufficient to simply minimize the l1 norm of the weight coefficients to obtain a sparse array solution. To achieve this, a modified l1 norm minimization method is derived and its effectiveness is verified by design examples.
KW - Compressive sensing
KW - Microphone array
KW - Sparse array
KW - Wideband beamforming
UR - http://www.scopus.com/inward/record.url?scp=84888883813&partnerID=8YFLogxK
U2 - 10.1109/ICDSP.2013.6622711
DO - 10.1109/ICDSP.2013.6622711
M3 - Conference article published in proceeding or book
AN - SCOPUS:84888883813
SN - 9781467358057
T3 - 2013 18th International Conference on Digital Signal Processing, DSP 2013
BT - 2013 18th International Conference on Digital Signal Processing, DSP 2013
T2 - 2013 18th International Conference on Digital Signal Processing, DSP 2013
Y2 - 1 July 2013 through 3 July 2013
ER -