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Engineering Brief

Evaluating Four Variants of Sine Sweep Techniques for Their Resilience to Noise in Room Acoustic Measurements

Authors: Segerstrom, Eric; Lee, Ming-Lun; Philbert, Steve

AES Convention 147 · Paper 531 · October 2019

Abstract

The sine sweep is one of the most effective methods for measuring room impulse responses; however, ambient room noise or unpredictable impulsive noises can negatively affect the quality of the measurement. This study evaluates four different variants of sine sweeps techniques for their resilience to noise when used as an excitation signal in room impulse response measurements: linear, exponential, noise whitened, and minimum noise. The result shows that in a pseudo-anechoic environment, exponential and linear sine sweeps are most resilient to impulsive noise among the four sweeps, while none of the evaluated sine sweeps are resilient to impulsive noise in an acoustically untreated room. Additionally, it is shown that minimum noise sine sweeps are most resilient to ambient noise.

Details

Published in
AES Convention 147
AES Convention
147
Paper number
531
Publication date
October 6, 2019
Session subject
Posters: Applications in Audio
Affiliation
Rensselaer Polytechnic Institute, Troy, NY, USA; University of Rochester, Rochester, NY, USA (See document for exact affiliation information.)
Type
Engineering Brief