1. Operator adjustable equalizers: An overview;D A Bohn;Proc. Audio Eng. Soc. 6th Int. Conf. Sound Reinforcement,1988
2. All about audio equalization: Solutions and frontiers;V V�lim�ki;Appl. Sci,2016
3. Digitalization of conventional analog filters for recording use;Y Hirata;J. Audio Eng. Soc,1981
4. Design of a digital biquadratic peaking or notch filter for digital audio equalization;S A White;J. Audio Eng. Soc,1986