This research describes a method to auralize the effect of a three-dimensional directional pattern of an acoustic source in a reverberant environment using real acoustic measurements of laser sparks. Laser-induced breakdown (LIB) produces a massless and point-like acoustic source. The authors demonstrate the performance of a volumetric array of LIBs for synthesizing arbitrary radiation patterns, auralize the radiation pattern of a loudspeaker and compare the measured and synthesized impulse responses in a reverberant room, and evaluate the method using listening tests. The synthesized room response matched the target response both in room response reconstruction and in listening tests. The proposed method requires no previous knowledge about the room characteristics; auralization is performed by convolving a sound signal with the synthesized room impulse responses using the cloud of laser sparks. The quality of the synthesized version was rated to be excellent.

Authors: Delikaris-Manias, Symeon; Bolaños, Javier Gómez; Eskelinen, Joona; Huhtakallio, Ilkka; Hæggström, Edward; Pulkki, Ville
Affiliations: Department of Signal Processing and Acoustics, Aalto University, Espoo, Finland; Department of Physics, University of Helsinki, Helsinki, Finland(See document for exact affiliation information.)
JAES Volume 64 Issue 10 pp. 720-730; October 2016
Publication Date: October 25, 2016 Import into BibTeX
Permalink: https://www.aes.org/e-lib/browse.cfm?elib=18514

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 JAES64)   /jaes64/10/pg720.pdf

DOI: http://dx.doi.org/10.17743/jaes.2016.0018

Start a discussion about this paper!