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Estimating the parameters of audible clinical percussion signals by fitting exponentially damped harmonics
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10.1121/1.4712018
/content/asa/journal/jasa/131/6/10.1121/1.4712018
http://aip.metastore.ingenta.com/content/asa/journal/jasa/131/6/10.1121/1.4712018

Figures

Image of FIG. 1.
FIG. 1.

Two examples of audible percussion signals collected from healthy volunteers: (a) signal collected over the left subclavicular area (resonant character); (b) signal collected over the left abdominal area (tympanic” character).

Image of FIG. 2.
FIG. 2.

Fourier amplitude spectra of the signals shown in Fig. 1. The EDS from Tables I and II are superimposed on the spectra. Each EDS is represented by a vertical line of height (Ai/di ) at the corresponding frequency fi .

Image of FIG. 3.
FIG. 3.

Signal reconstruction error from all M EDS after the SVD truncation.

Image of FIG. 4.
FIG. 4.

(a) Reconstruction of the original resonant signal from the increasing number of EDS components sorted by the amplitude. (b) Reconstruction of the original tympanic signal from the increasing number of EDS components sorted by the amplitude.

Image of FIG. 5.
FIG. 5.

PRD error between the original signal and the signal reconstructed from a subset of EDS sorted by the value of A/d (squares) and resorted according to the above algorithm (circles). (a) Resonant signal from Fig. 1; (b) tympanic signal.

Image of FIG. 6.
FIG. 6.

Frequency distribution of the dominant EDS for the resonant and tympanic signals.

Image of FIG. 7.
FIG. 7.

Distribution of the quality factor of the dominant EDS for resonant and tympanic signals.

Image of FIG. 8.
FIG. 8.

Distribution of the resonant and tympanic dominant EDS in the (f,Q) space.

Tables

Generic image for table
TABLE I.

MPM decomposition results for the resonant signal from Fig. 1(a).

Generic image for table
TABLE II.

MPM decomposition results for the tympanic signal from Fig. 1(b).

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/content/asa/journal/jasa/131/6/10.1121/1.4712018
2012-06-14
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Estimating the parameters of audible clinical percussion signals by fitting exponentially damped harmonics
http://aip.metastore.ingenta.com/content/asa/journal/jasa/131/6/10.1121/1.4712018
10.1121/1.4712018
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