TY  - JOUR
PY  - 2014//
TI  - A Theoretical study on the placement of microphone arrays for improving the localization accuracy of a fall
JO  - Conference proceedings - IEEE engineering in medicine and biology society
A1  - Yun Li, 
A1  - Ho, K. C.
A1  - Popescu, Mihail
A1  - Skubic, Marjorie
SP  - 4523
EP  - 4526
VL  - 2014
IS  - 
N2  - Falling is a common health problem for elderly. To address the problem, we are currently developing an acoustic fall detection system, FADE, which automatically detects a fall and reports to the caregiver. Of great importance of the fall detection system is a low false alarm rate that can be achieved by knowing where the acoustic signal comes from. The previous work showed the sound source localization can be determined by using an 8-microphone circular array, but the accuracy varies when placing the array at different positions. To further improve the localization accuracy, a second array can be added. In this paper we investigate the variations of localization accuracy of a fall signal when one or two arrays are placed at different positions in a room. The accuracy is evaluated by the Cramér-Rao Lower Bound (CRLB). The CRLB aids the determination of the best theoretical placement of one or two arrays in a room for locating the sound source.<p />  <p>Language: en</p>
LA  - en
SN  - 1557-170X
UR  - http://dx.doi.org/10.1109/EMBC.2014.6944629
ID  - ref1
ER  -