A room impulse response constitutes a unique signature of an acoustical space, however much of the detail is masked by the direct sound and highest level reflections. Reflections which are substantially masked may be simplified in some way without audible effects, thus reducing computational requirements. Audibility thresholds of individual reflections were measured, then used as a template to remove low level reflections from the BRIR, and replace them with a simplified signal. This was done using a simple binaural loudness model. Listening tests showed that for voice signals, altered BRIR's were virtually indistinguishable from the original versions, even when 93% of the BRIR between 15 ms and 200 ms was replaced.

Authors: Welti, Todd; Jensen, Rene E.
Affiliations: Siemens Mobile Phones A/S, Nørresundby, DK ; Harman International Industries Inc., Northridge, CA(See document for exact affiliation information.)
AES Convention: 114 (March 2003) Paper Number: 5839
Publication Date: March 1, 2003 Import into BibTeX
Subject: Psychoacoustics and Perception
Permalink: https://www.aes.org/e-lib/browse.cfm?elib=12561

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 aes20)   /pp2003/pp0303/00054.pdf

Start a discussion about this paper!