Citation

Lutfi RA, Heo I. J. Acoust. Soc. Am. 2012; 132(2): EL125-8.

Affiliation

Auditory Behavioral Research Lab, Department of Communicative Disorders, University of Wisconsin, Madison, Wisconsin 53706 ralutfi@wisc.edu.

Copyright

(Copyright © 2012, American Institute of Physics)

DOI

10.1121/1.4734555

PMID

22894310

Abstract

Two approaches to the automated detection of alarm sounds are compared, one based on a change in overall sound level (RMS), the other a change in periodicity, as given by the power of the normalized autocorrelation function (PNA). Receiver operating characteristics in each case were obtained for different exemplars of four classes of alarm sounds (bells/chimes, buzzers/beepers, horns/whistles, and sirens) embedded in four noise backgrounds (cafeteria, park, traffic, and music). The results suggest that PNA combined with RMS may be used to improve current alarm-sound alerting technologies for the hard-of-hearing.

Language: en