Nowadays, small and flat loudspeakers are requested by the market for home and mobile entertainment. One major problem of such small devices is the reproduction of lower frequencies due to physical limitations. A lack of low frequencies has a negative impact on the perceived audio quality. To obtain good audio quality even with small loudspeakers, the utilization of psychoacoustical effects is conceivable. Basic principles of psychoacoustical bandwidth extension, concretely implemented algorithms and parameter set-tings for a considerable extension of bandwidth are explained. Furthermore, a listening test method for evaluating perceived audio quality in comparison to bass extension is described. Based on that, an assessment of increased bandwidth extension and sound coloration is done and a conclusion is drawn.

Authors: Liebetrau, Judith; Beer, Daniel; Lubkowitz, Matthias
Affiliations: Fraunhofer IDMT, Ilmenau, Germany; Ilmenau University of Technology, Ilmenau, Germany(See document for exact affiliation information.)
AES Convention: 127 (October 2009) Paper Number: 7890
Publication Date: October 1, 2009 Import into BibTeX
Subject: Consumer Audio
Permalink: https://www.aes.org/e-lib/browse.cfm?elib=15085

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 127Papers)   /127/7890.pdf

Start a discussion about this paper!