| Popis: |
An electronic analog ear having 24 sections has a space‐time pattern that can be converted to a contour pattern in the manner of a “Voiceprint.” Each section signal is half‐wave rectified and low‐pass filtered to 400 Hz so as to retain several harmonies of fundamental voice pitch. Contours are generated with high speed commutation of the 24 section signals, a delay line smoothing device, and a level clipper. The actual experimental system, which is frequency scaled downward by a factor of 20 is described. A number of example patterns are shown for both speech and nonspeech sounds. Cues are revealed which allow the central nervous system to make localization measurements on the basis of envelope periodicity. A voice pitch mechanism is demonstrated which depends upon periodic pattern projections into the cochlea in a manner which is not well described with spectra. |
