Extracting sources from noisy abdominal phonograms: a single-channel blind source separation method
Jimenez-Gonzalez, Aida and James, C. J.. (2009) Extracting sources from noisy abdominal phonograms: a single-channel blind source separation method. Medical & Biological Engineering & Computing, Vol.47 (No.6). pp. 655-664. ISSN 0140-0118Full text not available from this repository.
Official URL: http://dx.doi.org/10.1007/s11517-009-0474-8
In this work we highlight a methodology that extracts sources from noisy single-channel abdominal phonograms. First, an appropriate matrix of delays is constructed. Next, multiple independent components are calculated using the FastICA algorithm. Then these components are projected back to the measurement space and classified for recovering the sources of interest. Single-channel phonograms obtained from three different subjects were analysed. Results show successful extraction of foetal heart sounds (FHS), maternal respiration/pulse wave, and line noise. It is important to point out the high performance of the method for extracting the former two as separate sources; especially due to the fact that pulse wave and FHS may overlap as maternal and foetal QRSs do in the abdominal ECG. The most outstanding factor is that this is achieved using a single-channel method. So, this approach extracts physiological sources from noisy abdominal phonograms, and we believe it will be useful for surveillance, not only for foetal well-being but also for maternal condition.
|Item Type:||Journal Article|
|Subjects:||R Medicine > R Medicine (General)
T Technology > TK Electrical engineering. Electronics Nuclear engineering
|Divisions:||Faculty of Science > WMG (Formerly the Warwick Manufacturing Group)|
|Journal or Publication Title:||Medical & Biological Engineering & Computing|
|Number of Pages:||10|
|Page Range:||pp. 655-664|
|Access rights to Published version:||Restricted or Subscription Access|
|Funder:||Consejo Nacional de Ciencia y Tecnología (Mexico) [Mexican Council for Science and Technology] (CONACYT)|
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