DocumentCode :
2787739
Title :
Localization of acoustic source on solids: A linear predictive coding based algorithm for location template matching
Author :
Yap, XueXin ; Khong, Andy W H ; Gan, Woon-Seng
Author_Institution :
Nanyang Technol. Univ., Singapore, Singapore
fYear :
2010
fDate :
14-19 March 2010
Firstpage :
2490
Lastpage :
2493
Abstract :
Location template matching (LTM) is a source localization technique in solids that is robust to dispersion and multipath. This is possible since LTM compares the input with a database of signals made at known locations. With this in place, it is possible to employ LTM in situations where the surface of interest takes an irregular shape. However, one of the existing LTM approaches uses crosscorrelation to compare the input and the database. It should be noted that if any two of the known locations stored in the database are too close, the cross-correlation method may have difficulties differentiating between signals generated from the neighboring points. To address this, we propose an algorithm which employs the linear predictive coding (LPC) that takes into account the dominant frequencies of a received signal. Using this approach, we show that the proposed algorithm is able to improve LTM´s source localization accuracy under a real environment in the context of source localization for a touch interface.
Keywords :
human computer interaction; linear predictive coding; acoustic source localization; linear predictive coding; location template matching; user interfaces; Databases; Fingers; Frequency; Human computer interaction; Linear predictive coding; Mice; Prediction algorithms; Signal processing; Signal processing algorithms; Solids; correlation; linear predictive coding; location template matching; user interfaces;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Acoustics Speech and Signal Processing (ICASSP), 2010 IEEE International Conference on
Conference_Location :
Dallas, TX
ISSN :
1520-6149
Print_ISBN :
978-1-4244-4295-9
Electronic_ISBN :
1520-6149
Type :
conf
DOI :
10.1109/ICASSP.2010.5494897
Filename :
5494897
Link To Document :
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