New ivory-billed woodpecker recordings to be released
...ansas. After eliminating thousands of noises from gunshots and other sources, the researchers found about 100 double knocks that bear a strong resemblance to the display drumming of the ivory-bill's closest relatives. The sounds were clustered around certain recording locations at certain times of day -- a p......resented the results of two years of research into gunshots at the Institute of Electrical and Electronic Engineers (IEEE) Signal Processing Society's annual meeting in Jackson Hole, Wyo. Because of its intense energy and distinctness, a gunshot is "the perfect signal" with which to explore the uses of soun...