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A sonic blast was a function that sonic screwdrivers and other, similar devices were cabable of using.

A sonic screwdriver's ability to create powerful frequencies and signals, as well as using sound to carry out its functions, meant that three different models would be able to create a sonic blast powerful enough to repel and destroy a Dalek while working together, as well as shoot green sonic energy waves to briefly incapacitate or stun a target. (TV: The Day of the Doctor, The Doctor Falls)