october march american electrical engineer pioneered number important concepts designs helped develop practical use recording sound film won academy award designed movie theater sound systems worked radar submarine detection equipment world war collaborated creating long lived theatre speaker system researched high intensity vibration long line communications nasa air_force near end career standardized noise control criteria home construction california pattern applied new homes education born october received degree minnesota years age obtained married laboratory biologist began working master degree movie sound release major film companies racing hire audio engineers record reproduce sound film common acquaintances inc contacted hired hollywood california studies physics engineering having left masters studies minnesota years old supervised sound recording talking motion picture provided recording equipment specific techniques achieving best sound film developed hard work imagination ground breaking methods later industry standards mgm mgm hired away assignment fix problematic recording overall phase shift measured voice degrees solution use higher obtained consultation founder earlier befriended laboratory associate wife helped position design engineer following year team mgm solved problem recording strong alongside flat weak soprano voice picking duo film work reduce weight sound equipment mgm approached los_angeles smaller lighter version cannon heavy duty electrical motors resulting lightweight pin cannon connector eventually evolved industry standard pin connector connector great depression underway kept busy producing popular film studios mgm asked chair sound committee task uniform method film sound theater began recording techniques major film studios later helped develop academy curve standard filter recorded noise retaining prominent voice reproduction characteristics continued contact led conversation poor state movie theaters men shared ideas best improve existing designs took plans mgm head sound brother decided fund effort responsible concept design project tapped develop drive units worked improve electronic components came collaboration received industry standard system horn system theatres garnered technical award oscar sound manufacturing bought division independent resulting company established film industry contacts combined extended manufacturing capability reformed contacts parent firms world war united_states preparing fight long technically challenging war left mgm join friend begun research mit work radar development military applications work mit cambridge massachusetts led employment opportunity los_angeles improved magnetic mad known magnetic airborne detection system anti submarine warfare returned entertainment improving horn system worked develop system 20th century arriving marketplace offered better clarity high power levels immediately began testing sonic characteristics movie theater industry standard production long lived continued 1990s took vice president engineering leaving start new enterprise remained engineering time supervised development horns significant reductions size microphone crossover designs major reworking improvement known high fidelity driver originally designed president chief engineer joined hollywood section regular social gathering sound precursor elected chair certain proposed industry standards members helped form los_angeles section beginning merged form retained fellowship noise studies director widened scope research include study sonic missile launch noise atmospheric noise highway noise hearing conservation gun helped develop air driven noise generator produced acoustic driven horsepower diesel engine helped nasa voice communication equipment including long lines houston assisting air_force worldwide telephone system worked military listening systems retired regular employment continuing work consultant manner hadn retired early 1970s directed hearing conservation program founded mid-1970s performing architectural acoustic analysis creating standards california multi family housing construction acoustic design policies significantly influencing interior exterior noise control standards united_states personal life undertaking post graduate studies minnesota married published researcher fields accompanied california offered job introduced young electrical engineer working los_angeles laboratory doctoral graduate fresh man continue associate collaborate technical endeavors ceased consulting died march friends said helped lay sales demonstration booth months died published works study theater loud speakers volume motion picture sound engineering los_angeles use fine grain positive variable density film recording acoustic society america generation high intensity sound environmental testing electronic components instrumentation measurement generation high intensity sound electro air fog signals audio journal article database high power low frequency journal article database development horn type moving driver unit audio engineering society electronic library journal article database column audio engineering society electronic library microphone audio engineering society electronic library airport noise management audio engineering society electronic library historical review horns audience type sound reproduction audio engineering society electronic library review early developments journal article database dividing networks loud speaker systems journal article database function design horns audio engineering society electronic library study theatre loud speakers journal article database practical application time delay field audio engineering society electronic library brief history early motion picture sound recording practices awards academy_award best film technical award gold medal highest technical achievement award
John Kenneth Hilliard