The field radiated by a loudspeaker is sensitive to the loudspeaker placement, especially at low frequencies, because the room exerts an acoustical load on the membrane. The semiclassical theory is used to simulate the load: this variant of ray tracing takes phases into account. It builds up the coherent part of the point transfer function - or acoustical load - for different source positions and the ratios give the compensation filters. Compared to measurements, the same overall shapes are obtained. Discrepancies subsist due to the finite size of the loudspeaker and phase shifts at the reflections on the walls not accounted for at present. So far, the simulation has been developed for rectangular rooms and point sources only.

Authors: Polack, Jean-Dominique; Pedersen, Jan A.
Affiliations: Laboratoire d’Acoustique Musicale, Université Paris 6 / CNRS-UMR7604/Ministère de la Culture, Paris, France ; Bang & Olufsen New Business a/s, Struer, Denmark(See document for exact affiliation information.)
AES Conference: 23rd International Conference: Signal Processing in Audio Recording and Reproduction (May 2003)
Paper Number: 12
Publication Date: May 1, 2003
Subject: Signal Processing in Audio Recording and Reproduction

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.

Subscribe to this discussion

To be notified of new comments on this paper you can subscribe to this RSS feed. Forum users should login to see additional options.

Start a discussion!

If you would like to start a discussion about this paper and are an AES member then you can login here:
Username:
Password:

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.