Human auditory does not perceive sound of all frequencies with equal loudness. It is known that a low frequency signal needs to be produced with higher power level to have the same loudness as the middle frequency part. There are two ways to overcome this problem. There are either carried out by boosting the power of the low frequency part or utilizing psychoacoustics' effect called the 'missing fundamental'. Parametric array's usage to generate highly directional audible signal has been reported since few decades ago. However the reproduced signal lacks low frequency content. One reason is the relatively low power level produced by the existing parametric array. Utilizing the non-linearity of air, it is proposed to psycho-acoustically enhance the low frequency perception of a parametric array loudspeaker.

Authors: Karnapi, Furi Andi; Gan, Woon Seng; Er, Meng-Hwa
Affiliation: DSP Lab, School of EEE, Nanyang Technological University, Singapore
AES Convention: 112 (April 2002) Paper Number: 5636
Publication Date: April 1, 2002 Import into BibTeX
Subject: Signal Processing Forum
Permalink: https://www.aes.org/e-lib/browse.cfm?elib=11417

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 aes19)   /pp2002/pp0205/000088.pdf

Start a discussion about this paper!