Robust selection of clean swept-sine measurements in non-stationary noise

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)
70 Downloads (Pure)


The exponential sine sweep is a commonly used excitation signal in acoustic measurements, which, however, is susceptible to non-stationary noise. This paper shows how to detect contaminated sweep signals and select clean ones based on a procedure called the rule of two, which analyzes repeated sweep measurements. A high correlation between a pair of signals indicates that they are devoid of non-stationary noise. The detection threshold for the correlation is determined based on the energy of background noise and time variance. Not being disturbed by non-stationary events, a median-based method is suggested for reliable background noise energy estimation. The proposed method is shown to detect reliably 95% of impulsive noises and 75% of dropouts in the synthesized sweeps. Tested on a large set of measurements and compared with a previous method, the proposed method is shown to be more robust in detecting various non-stationary disturbances, improving the detection rate by 30 percentage points. The rule-of-two procedure increases the robustness of practical acoustic and audio measurements. (C) 2022 Author(s).All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY)license (

Original languageEnglish
Pages (from-to)2117-2126
Number of pages10
JournalThe Journal of the Acoustical Society of America
Issue number3
Publication statusPublished - 1 Mar 2022
MoE publication typeA1 Journal article-refereed


Dive into the research topics of 'Robust selection of clean swept-sine measurements in non-stationary noise'. Together they form a unique fingerprint.

Cite this