* Decibel Instruments Inc., Fremont, Calif., to Goldberg Moser O'Neill, San Francisco, to handle advertising for the maker of Intune Hearing Solutions hearing devices, which had been handled by Lois/EJL, New York, part of Lois/U.S.A. Billings were estimated at $5 million to $7 million.
* PE Biosystems, Foster City, Calif., the life sciences division of Perkin-Elmer Corp., to Philip Johnson Associates, Boston, to handle its account, previously handled by various agencies. Billings were estimated at $5 million.