The modal analysis of a room response is considered, and a computational structure employing a modal decomposition is introduced for synthesizing artificial reverberation. The structure employs a collection of resonant filters, each driven by the source signal and their outputs summed. With filter resonance frequencies and dampings tuned to the modal frequencies and decay times of the space, and filter gains set according to the source and listener positions, any number of acoustic spaces and resonant objects may be simulated. Issues of sufficient modal density, computational efficiency and memory use are discussed. Finally, models of measured and analytically derived reverberant systems are presented, including a medium-sized acoustic room and an electro-mechanical spring reverberator.

Authors: Abel, Jonathan S.; Coffin, Sean; Spratt, Kyle
Affiliations: Stanford University, Stanford, CA, USA; University of Texas, Austin, Austin, TX, USA(See document for exact affiliation information.)
AES Convention: 137 (October 2014) Paper Number: 9208
Publication Date: October 8, 2014
Subject: Signal Processing

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.