13182_3838_early_voice_analysis2
Subjects
1964
Color
Illustrates the Bell System's efforts to improve long distance transmission, using as an example Bell Laboratories' studies in speech and hearing. Footage of scientists at Bell laboratories recording a man speaking a simple statement, then passing through an analyzing filter which is then recorded on a spool of paper. CUs of the spectrogram being recorded on the paper. The speech sounds form waveforms on the paper, and a paper tape is punched with holes and that info is transferred to magnetic tape.