1. A method of monitoring a brain wave response of a fetus in utero, comprising the steps of: (a) removably connecting an auditory transducer to an abdomen of a mother of the fetus; (b) removably connecting at least one biosensor electrode to the mother's abdomen to detect brain wave activity in the fetus; (c) pulsing the transducer with one of rectangular waves and tone pips of a selected frequency to emit pulsed audible sounds at predetermined times; (d) detecting, for each pulsed audible sound, a series of voltage oscillations corresponding to brain stem auditory evoked responses (BAER) of the fetus which are time-locked to the corresponding audible sound; and (e) converting the BAER analog output to BAER digital data.