The earliest work on adaptive filters may be traced back to the late 1950s, during

which time a number of researchers were working independently on theories and

applications of such filters. From this early work, the least-mean-square ð LMSÞ algorithm emerged as a simple, yet effective, algorithm for the design of adaptive

transverse (tapped-delay-line) filters.-The earliest work on adaptive filters may be traced back to the late 1950s, during

which time a number of researchers were working independently on theories and

applications of such filters. From this early work, the least-mean-square ð LMSÞ　algorithm emerged as a simple, yet effective, algorithm for the design of adaptive

transverse (tapped-delay-line) filters.