Application of Compandors to Telephone Circuits
- 1 December 1946
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in Transactions of the American Institute of Electrical Engineers
- Vol. 65 (12) , 1079-1086
- https://doi.org/10.1109/T-AIEE.1946.5059288
Abstract
Prior to the war a compandor was developed for general use on telephone circuits of the Bell System. This equipment provides power range compression at the transmitting end and power range expansion at the receiving end of a telephone channel. The resulting crosstalk and noise reductions of about 25 decibels are large enough to make useful circuits out of channels which otherwise would be unworkable. This paper considers engineering problems in the application of compandors and describes the circuit principles involved in the equipment.Keywords
This publication has 2 references indexed in Scilit:
- A Carrier Telephone System for Toll CablesTransactions of the American Institute of Electrical Engineers, 1938
- The "compandor"'-an aid against radio staticTransactions of the American Institute of Electrical Engineers, 1934