This paper describes a study of the use of low order FIR filters for audio equalization. The filter frequency response is specified using a set of frequency samples and a fast algorithm is used to calculate its coefficients in real time. When the samples correspond to exactly equally spaced frequencies, a good filter is obtained. Audio equalization requires that the frequency samples are logarithmically spaces, and the direct approach gives rise to large errors. This effect is explained and an alternative approach considered. Results of simulation and real time performance analyses are also presented.

Authors: Waters, Michael; Sandler, Mark; Davies, A. C.
Affiliation: King's College, University of London, Strand, London WC2 2LS, UK
AES Convention: 91 (October 1991) Paper Number: 3188
Publication Date: October 1, 1991
Subject: Signal Processing

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.