(Fallphonometer)
Description: This device consists of four vertical metal columns
with solenoids that hold balls at variable heights. They can
electrically release the balls to produce sounds of varying
intensity, which allows measurement of intensity thresholds.
(Expanded caption Copyright 1998, Edward J. Haupt)
(Source: Wundt's Physiologische Psychologie, not otherwise
cited)
Source of illustration: Zimmermann, E. (1903). XVIII. Preis-
Liste über psychologische und physiologische Apparate
(p. 29). Leipzig: Eduard Zimmermann.
DESCRIPTORS:
Type: component
Stimulus: sound
System: audition
Output: recognition