Opens in a new tab

AES E-Library

← Back to search

Convention Paper

The Importance of Reflections in a Binaural Room Impulse Response

Authors: Welti, Todd; Jensen, Rene E.

AES Convention 114 · Paper 5839 · March 2003

Abstract

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.

Details

Published in
AES Convention 114
AES Convention
114
Paper number
5839
Publication date
March 6, 2003
Session subject
Psychoacoustics and Perception
Affiliation
Siemens Mobile Phones A/S, Nørresundby, DK ; Harman International Industries Inc., Northridge, CA (See document for exact affiliation information.)
Type
Convention Paper