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Photograph was edited for publication purposes.; Title supplied by cataloger.; Photo may be attributed to Mac. Photograph article dated March 19, 1928 reads, "The "It" machine and the above apparatus which measures and photographs voice vibrations were developed by the S. C. engineering department. Pretty Ruth Wencl speaks the words "Southern California Business" into the machine, which records their vibrations on a film. Gene Sayler conducts the experiment."
1 photographic print :b&w ;26 x 21 cm. Photographic prints
00095915 HeraldÂ Examiner Collection HE box 102. CARL0005059171 http://22.214.171.124/cdm/ref/collection/photos/id/33254
University of Southern California Dictation recordings--California--Los Angeles Dictating machines--California--Los Angeles Students--California--Los Angeles Acoustic streaming Telegraphone Herald-Examiner Collection photographs