Cathode-Ray-Oscillograph Images of Noise-Reduction Envelopes
A method of using a standard cathode-ray oscillograph to present low-frequency or direct-current conditions is described. In the interest of sound on-film recording the paper describes how an electronic switch is used to generate repetitive pulses of audio signals as a second electronic switch is used to pick up the signals and the resulting noise-reduction-bias envelope and place them in reference positions on the oscillograph.
- Print ISSN
- 0097-5834
- Published
- 1948-01
- Content type
- Original Research
- DOI
- 10.5594/J12645
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