Investigating the statistical properties of the swallowing sounds

Author

Shirazi, S. Sarraf ; Moussavi, Z.

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Manitoba, Winnipeg, MB, Canada

fYear

2011

fDate

Aug. 30 2011-Sept. 3 2011

Firstpage

6021

Lastpage

6024

Abstract

In this paper the statistical properties of the swallowing sound is discussed. This knowledge is required for the acoustical modeling of the swallowing mechanism as it is important to select an appropriate type of the system (i.e. linear vs. nonlinear) for modeling. The tests of linearity and gaussianity were performed. The results of the statistical test of gaussianity showed a nongaussian distribution of the swallowing sound signals. Also, the test of linearity exhibited the nonlinear characteristics of the model that represents the swallowing sound generation.

Keywords

Gaussian distribution; acoustic signal processing; medical signal processing; statistical analysis; Gaussianity; acoustical modeling; statistical test; swallowing sounds; Analytical models; Computational modeling; Fourier transforms; Frequency domain analysis; Hidden Markov models; Linearity; Physiology; Algorithms; Auscultation; Data Interpretation, Statistical; Deglutition; Deglutition Disorders; Humans; Reproducibility of Results; Sensitivity and Specificity; Sound Spectrography;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, EMBC, 2011 Annual International Conference of the IEEE

Conference_Location

Boston, MA

ISSN

1557-170X

Print_ISBN

978-1-4244-4121-1

Electronic_ISBN

1557-170X

Type

conf

DOI

10.1109/IEMBS.2011.6091488

Filename

6091488