An engineering example of an orthogonal second-order digital all-pass filter impmementation is presented in a fully parametric audio equalizer application. Independent coefficients control frequency, Q, and boost/cut. The noise and scaling properties of the four-multiply normalized ladder structure are analyzed and shown graphically.
(See document for exact affiliation information.)
https://aes2.org/publications/elibrary-page/?id=6994
(1388KB)
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 Join the AES. If you need to check your member status, login to the Member Portal.
