Perceptual Effects of Dynamic Range Compression in Popular Music Recordings - January 2014
Accurate Calculation of Radiation and Diffraction from Loudspeaker Enclosures at Low Frequency - June 2013
New Measurement Techniques for Portable Listening Devices: Technical Report - October 2013
Comparison of Four Subwoofer Measurement Techniques
Acoustic measurements at very low frequency are difficult to perform, and the interpretation of the results may often be tricky. In this paper, four subwoofer measurement techniques are compared in terms of frequency response and directivity. The methods used are the following ones: semi-anechoic room, anechoic room, isobaric room, pseudo free-field. Two subwoofers are tested: a closed box system and an active/passive system. For the semi-anechoic technique, double layer pressure measurements on a half-sphere surrounding the source are performed. Then, using a BEM integral formulation, outgoing and ingoing pressure fields are separated to recover free field conditions (i.e. removal of reflections on walls below room cut-off). Discrepancies between results are discussed and explained when possible.
Click to purchase paper 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 $20 for non-members, $5 for AES members and is free for E-Library subscribers.