Title :
A New Channel Bank with Block Companding
Author :
Niwa, Kunihiko ; Araseki, Takashi ; Tomozawa, Atsushi
Author_Institution :
Nippon Electric Comp., Kawasaki, Japan
fDate :
4/1/1982 12:00:00 AM
Abstract :
Performance improvement of the nearly instantaneous companding PCM (or block companding PCM) is discussed. A simplified algorithm is proposed. The design and performance of a channel bank adopting the proposed algorithm is described. The channel bank can transmit 44 voiceband signals on a standard T1 line. It provides commercially acceptable speech quality as well as sufficient transparency for voiceband data up to 4800 bits/s.
Keywords :
Adaptive coding; Companding; PCM communication; Algorithm design and analysis; Buffer storage; Channel bank filters; Error correction; Forward error correction; Frequency; Hardware; Phase change materials; Robustness; Speech;
Journal_Title :
Communications, IEEE Transactions on
DOI :
10.1109/TCOM.1982.1095509
