In one of the funnier scenes in the movie comedy Yellowbeard, John Cleese's character, Blind Pew, asserts he has acute hearing -- to the bemusement of others, who, amid the hubbub of street noise, hear it as "a cute earring". If people with normal hearing have trouble filtering a clear message from the noisy medium, the problem is magnified enormously for the hearing-impaired.

PolyNovo Biomaterials, a 50-per cent owned subsidiary of Perth's Xceed Biotechnology (ASX:XBL), has entered a research alliance with Melbourne's Bionic Ear Institute to develop a more sophisticated bionic ear that could dramatically improve patients' hearing by inducing new auditory nerves to grow and connect with the bionic implant.