AES E-Library

AES E-Library

Theory and Real-Time Implementation of Time Varying Digital Audio Filters

Document Thumbnail

Digital audio filters whose parameters vary with time are analyzed according to the Time-Varying filter theory. Such a theory allows for recursive filter realization using finite order difference equations with time-varying coefficients. With this approach, the errors occurring during parameter transitions can be evaluated. It was found that such errors were significant for abrupt variation in filter parameters. A real-time microprocessor implementation for such a filter is also presented. Using a novel test, the real-time output of the varying filter was evaluated, so that perceived filter transition discontinuities could be detected.

Authors:
Affiliation:
AES Convention: Paper Number:
Publication Date:
Subject:
Permalink: http://www.aes.org/e-lib/browse.cfm?elib=5921

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