On the efficient design of bandpass digial filter structures
Ronald E. Crochiere, Paul Penfield · IEEE Transactions on Acoustics Speech and Signal Processing · 1975
Several advantages are observed in designing recursive band-pass digital filter structures according to a bandpass transformation that is incorporated directly in the structure. In particular, it is shown that such structures can be implemented with fewer multiplies than in conventional designs and in some cases, with shorter coefficient word lengths.