Exchange Algorithms for the Design of Linear Phase FIR
        Filters and Differentiators Having Flat Monotonic Passbands
        and Equiripple Stopbands

        Ivan W. Selesnick and C. Sidney Burrus 
        Electrical and Computer Engineering Department - MS 366 
        Rice University, Houston, TX 77251-1892, USA 
        selesi@rice.edu, csb@rice.edu

	To appear in IEEE trans. on Circuits and Systems, part II.

This paper describes a modification of a technique proposed by Vaidyanathan 
for the design of filters having flat passbands and equiripple stopbands.  
The modification ensures that the passband is monotonic and does so without 
the use of concavity constraints.  Another modification described in this 
paper adapts the method of Vaidyanathan to the design of lowpass 
differentiators having a specified degree of tangency at w = 0.