Georg von BÃ kÃ sy ( 3 June 1899 â `` 13 June 1972 ) was an Hungarian biophysicist . Georg von BÃ kÃ sy ( BÃ kÃ sy GyÃ rgy ) ( June 3 , 1899 -- June 13 , 1972 ) was a Hungarian biophysicist born in Budapest .