When size limitations of loudspeakers prevent the reproduction of low-frequency sounds, nonlinear devices can be used to create the illusion of the missing bass. Such virtual bass systems generate harmonics of the missing fundamental. However, they also can generate unwanted intermodulation distortion, which appears to be dependent on the particular audio sample and the selected nonlinearity. A detailed analysis showed that the ideal nonlinearity should not be even-symmetric, and its second derivative should be less than zero on the input interval 0 to 1.

Authors: Oo, Nay; Gan, Woon-Seng; Hawksford, Malcolm O. J.
Affiliations: Nanyang Technological University, School of Electrical and Electronic Engineering, Singapore; University of Essex, School of Computer Science and Electronic Engineering, Colchester, Essex, UK(See document for exact affiliation information.)
JAES Volume 59 Issue 11 pp. 804-824; November 2011
Publication Date: December 21, 2011 Import into BibTeX
Permalink: https://www.aes.org/e-lib/browse.cfm?elib=16149

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: (CD JAES59)   /jaes59/11/pg804.pdf

Join the discussion about this paper! (6 comments)