Digital audio equalization is one of the most common operations in the acoustic field, but its performance depends on computational complexity and filter design techniques. Starting from a previous FIR implementation based on multirate systems and filterbanks theory, an optimized digital audio equalizer is derived. The proposed approach employs all-pass IIR filters to improve the filterbanks structure developed to avoid ripple between adjacent bands. The effectiveness of the optimized implementation is shown comparing it with the FIR approach. The solution presented here has several advantages increasing the equalization performance in terms of low computational complexity, low delay, and uniform frequency response.

Authors: Virgulti, Marco; Cecchi, Stefania; Primavera, Andrea; Romoli, Laura; Ciavattini, Emanuele; Bettarelli, Ferruccio; Piazza, Francesco
Affiliations: Universitá Politecnica della Marche, Ancona, Italy; Leaff Engineering, Ancona, Italy(See document for exact affiliation information.)
AES Convention: 133 (October 2012) Paper Number: 8793
Publication Date: October 25, 2012
Subject: Analysis and Synthesis of Sound

Click to purchase paper as a non-member or you can login as an AES member to see more options.

No AES members have commented on this paper yet.

Subscribe to this discussion

To be notified of new comments on this paper you can subscribe to this RSS feed. Forum users should login to see additional options.

Start a discussion!

If you would like to start a discussion about this paper and are an AES member then you can login here:
Username:
Password:

If you are not yet an AES member and have something important to say about this paper then we urge you to join the AES today and make your voice heard. You can join online today by clicking here.