Voice recording, used as evidence (1960s) (jan 18, 1960 – jul 31, 2005)
Description:
A sound spectrograph discovered to be able to record voices. Voiceprints began to be used in investigations and as court evidence from recordings of phones, answering machines, or tape recorders.Added to timeline:
Date:
jan 18, 1960
jul 31, 2005
~ 45 years