On least-squars design of recursive digital filters
Kishan Shenoi, Madihally J. Narasimha, A. M. Peterson · IEEE Transactions on Acoustics Speech and Signal Processing · 1976
Time-domain methods for the design of recursive digital filters using a squared error criterion are compared with a frequency-domain technique. Levy's method, which has been used to estimate transfer functions of continuous-time systems is modified to obtain design equations for digital filters. A special case of Levy's method is shown to be essentially equivalent to the time-domain methods.