The acoustic diffusion equation model is an energy-based model that is being successfully applied in room acoustics for predicting the late part of the decay, in the past few years. Early researches usually used a finite element method to solve the diffusion equation model. Recently, an alternative implementation using finite difference methods has been proposed. A comparison between both numerical techniques could be helpful to clarify the pros and cons of each method. In this paper, this evaluation is made by several simulations in different scenarios. Both prediction accuracy and computational performance are compared using different absorption distributions. It is suggested that the finite difference implementation is less computational intensive than the finite element method. Moreover, the obtained values in the simulations are accurate, at least as well as other geometrical model.

Authors: Navarro, Juan M.; Noriega, Juan E.; Escolano, José; Lopez, José J.
Affiliations: Universidad Politécnica de Valencia, Valencia, Spain; ,San Antonio's University of Murcia, Guadalupe, Spain; University of Jaén, Linares, Spain(See document for exact affiliation information.)
AES Convention: 132 (April 2012) Paper Number: 8667
Publication Date: April 26, 2012
Subject: Spatial Audio

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.