Voice recording, used as evidence (1960s) (18 янв 1960 г. – 31 июл 2005 г.)
Описание:
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.Добавлено на ленту времени:
Дата:
18 янв 1960 г.
31 июл 2005 г.
~ 45 years