Title :
Optimum digital audio equalizers with flat frequency response
Author :
Stanciu, Lucian ; Stanciu, Cristian
Author_Institution :
Dept. of Telecommun., Univ. Politeh. of Bucharest, Bucharest, Romania
Abstract :
In this paper a design method of the optimum digital audio equalizers with small ringing impulse responses, by using symmetric B-spline functions 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. B-splines can be combined to improve the interband independence and, at the same time, to have small ringings of the impulse response and desired frequency response.
Keywords :
approximation theory; audio equipment; equalisers; frequency response; splines (mathematics); transient response; continuous superior order derivative; flat frequency response; frequency band response approximation; interband independence; optimum digital audio equalizer; small ringing impulse response; symmetric B-spline function; Approximation methods; Attenuation; Band pass filters; Equalizers; Finite impulse response filter; Frequency response; Splines (mathematics); audio equalizer; eigenfilter; impulse response; ringing; spline functions;
Conference_Titel :
Communications (COMM), 2012 9th International Conference on
Conference_Location :
Bucharest
Print_ISBN :
978-1-4577-0057-6
DOI :
10.1109/ICComm.2012.6262606
