// todo need optimize like in event.jsp. Add indexing or not indexing this page. Voice recording, used as evidence (1960s) (18 gen 1960 anni – 31 lugl 2005 anni) (Il nastro del tempo)

Voice recording, used as evidence (1960s) (18 gen 1960 anni – 31 lugl 2005 anni)

Descrizione:

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.