Optimal Determination of the Truncation Point of Room Impulse Responses

A theoretically obtained optimal Truncation Point (TP) in the Room Impulse Response (RIR) is located at the intersection of the main decay slope and the noise floor. Precise determination of this point is difficult in practice. Namely, the deviation of the RIR decay from the exponential decay can le...

Full description

Saved in:
Bibliographic Details
Published in:Building acoustics 2005-01, Vol.12 (1), p.15-29
Main Authors: Ciric, Dejan G, Milosevic, Miroslava A
Format: Article
Language:English
Subjects:
Acoustics
Algorithms
Computer simulation
Decay
Deviation
Impulse response
Noise
Optimization
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A theoretically obtained optimal Truncation Point (TP) in the Room Impulse Response (RIR) is located at the intersection of the main decay slope and the noise floor. Precise determination of this point is difficult in practice. Namely, the deviation of the RIR decay from the exponential decay can lead to discrepancies in the determined TP from the optimal value. In order to increase the accuracy of TP determination, additional terms are incorporated in a simple algorithm. Besides, iterative algorithm for RIR truncation is proposed. These are compared with the existing one, using simulated and measured RIRs. The results confirm the validity of the proposed algorithms, indicating their advantages. In addition, the influences of the response parameters on RIR truncation are investigated.
ISSN:1351-010X
2059-8025
DOI:10.1260/1351010053499216