Experiments with synchronized phonograph records had been conducted from the very outset of cinema, but not until the ’20’s, with the advent of electrical recording and valve amplifiers, did sound become viable.
Daar is sedert die begin van die rolprentbedryf met gesinchroniseerde grammofoonplate geëksperimenteer, maar dit was eers in die twintigerjare, met die koms van elektriese opneming en buisversterkers, dat klank moontlik geword het.jw2019 jw2019