AES E-Library

AES E-Library

Design Aspects of Graphic Equalizers

The analysis and the design of graphic equalizers are discussed. Useful properties of Hurwitz polynomials and positive real functions are applied to the types of active networks commonly found in graphic equalizers. Questions converning frequency and phase response along with the optimum number of bands and their Q are addressed, and some practical situations are examined. Seven different basic topologies are shown with a discussion of the advantages, disadvantages, and unique features of each. three of the seven, representing the most commonly used topologies, are examined in more detail, and the important design equations for each are given. All three are shown to have minimum phase characteristics for any combination of control settings, although other performance differences exist among them.

JAES Volume 31 Issue 6 pp. 394-407; June 1983
Publication Date:

Click to purchase paper as a non-member 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 $33 for non-members and is free for AES members and E-Library subscribers.

Learn more about the AES E-Library

E-Library Location:

Start a discussion about this paper!

AES - Audio Engineering Society