Paper describes a new low-cost audio real-time analyzer using integrated circuit logic for sampling 27 one-third octave filters. Unusual features include full 27-dB visual display on any oscilloscope; positive lock-in of display by providing sweep to oscilloscope; permanent display of the 27-dB calibration voltage; and dual level inputs for microphone and auxiliary level.

Authors: Johnson, David C.; Hall, Victor
Affiliation: COMMUNICATIONS COMPANY, INC., SAN DIEGO, CA
AES Convention: 51 (May 1975) Paper Number: 1030
Publication Date: May 1, 1975

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