Design of a Digital Biquadratic Peaking or Notch Filter for Digital Audio Equalization
This note discusses the design of a simple biquadratic (i.e., second-order numerator and denominator) digital filter whose frequency response is nearly unity except in the vicinity of a preselected frequency. A tandem set of such filters has been developed and is useful as an on-line tool for single-frequency attenuation or boost for signal shaping and enhancement in real time.
Click to purchase paper or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!
This paper costs $20 for non-members, $5 for AES members and is free for E-Library subscribers.