The localization of sound sources with delay-and-sum (DAS) beamforming is limited by a
poor spatial resolution—particularly at low frequencies. Various methods based on
deconvolution are examined to improve the resolution of the beamforming map, which can
be modeled by a convolution of the unknown acoustic source distribution and the
beamformer's response to a point source, ie, point-spread function. A significant limitation of
deconvolution is, however, an additional computational effort compared to beamforming. In …