TY  - JOUR
PY  - 2012//
TI  - Automated detection of alarm sounds
JO  - Journal of the Acoustical Society of America
A1  - Lutfi, Robert A.
A1  - Heo, Inseok
SP  - EL125
EP  - 8
VL  - 132
IS  - 2
N2  - 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.<p />  <p>Language: en</p>
LA  - en
SN  - 0001-4966
UR  - http://dx.doi.org/10.1121/1.4734555
ID  - ref1
ER  -