Title :
Synthesis of Digital Attenuators for Segment-Companded PCM Codes
Author :
Aaron, Robert M. ; Kaneko, Hisashi
Author_Institution :
Bell Telephone Laboratories, N.J.
fDate :
12/1/1971 12:00:00 AM
Abstract :
Segment companding laws are being used in PCM channel banks to permit more efficient signal processing on a digital basis. A unified formulation of these companding laws is used as a basis for the systematic synthesis of digital attenuators operating directly on the compressed code. Simple sequential circuits for digital attenuation are derived from expansion and compression algorithms. Signal-to-noise ratio, idle-circuit noise, and attenuation actually achieved are calculated.
Keywords :
Attenuation; Attenuators; Channel bank filters; Circuit synthesis; Digital signal processing; Phase change materials; Sequential circuits; Signal processing algorithms; Signal synthesis; Signal to noise ratio;
Journal_Title :
Communication Technology, IEEE Transactions on
DOI :
10.1109/TCOM.1971.1090780
