Digital audio equalizers with flat frequency response

In this paper a design method of the digital audio equalizers with small ringing impulse responses, by using symmetric B-spline functions and spline polynomials, is presented. It is important to have a flat frequency response for the audio equalizer. The solution is to approximate the response of each frequency band by using spline functions, that insures continuous superior order derivatives. These small ringings give a natural audition. A tradeoff between frequency band independence, small ringings of the impulse response and desired frequency response, must be made.