The art of controlling the amplitude range of telephone signals involves recognition of certain characteristics in addition to those used to specify the performance of ordinary transducers. Fundamentally, three kinds of characteristics are necessary to distinguish different range control devices. They are (1) the steady-state input-output characteristics, (2) the time actions, and (3) the range over which they function. In some cases, several secondary characteristics may be of interest, but they need not be considered in determining to which class a particular device belongs. This paper discusses and classifies these characteristics.
No takes yet. Share an insight, caveat, or question.
S. B. Wright (1938) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: