In this paper we describe a signal processing technique for enhancing audio signals based on manipulation of their modulation spectra. The modification is achieved by. Filtering the time trajectories of spectral envelopes in different frequency bands. Scaling of higher modulation frequencies with shelving. Filters is used to modify rapidly changing acoustic events, thus effectively enhancing transient components without the need for explicit detection. The perceptual effect of such modifications is analogous to the edge processing applied to images, where acoustic details can either be smoothed or sharpened depending on the desired quality of the sound.
Authors:
Avendano, Carlos; Goodwin, Michael
Affiliation:
Creative Advanced Technology Center, Scotts Valley, CA
AES Convention:
117 (October 2004)
Paper Number:
6259
Publication Date:
October 1, 2004
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.
To be notified of new comments on this paper you can subscribe to this RSS feed. Forum users should login to see additional options.
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.