[throwaway7767]

I understood his article such that he used the same laptop to test both his own beamforming algo as well as the google one. Since the google one seems to work very well, it seems likely that the limit is not hardware.

I'm actually very surprised that it works as well as it does, based on the sample recordings.

[brandmeyer]

Any claim that someone beat the diffraction limit should be viewed with the same level of skepticism as faster-than-light particles, engines that don't conserve momentum, perpetual motion machines, etc.