Subtraction of a signal 111 from a pulse response 110, where signal 111 provides a good approximation of the tail of pulse response 110, can provide a method for canceling the tail of pulse response 110. For continuous data streams, signals X(t), 223 and Y(t) can correspond to, respectively, signals 110, 111 and 112. X(t) differs from 110 in being a continuous data stream. 223 differs from 111 in being the low pass filtering of X(t), such low pass filtering accomplished by a unit LPF 211. Y(t) differs from 112 in being a continuous stream of equalized data, produced by subtracting the signal at 223 from X(t).A measurement unit 213, analysis unit 214 and decision unit 215 can act to continuously adapt LPF 211 such that tail cancellation equalization is continuously achieved.Measurement unit 213 can construct, from Y(t), a set of correlation measurements that can be used to adapt LPF 211.