Name
Title | ||
|---|---|---|
Sequential blind source extraction for quasi-periodic signals with time-varying period. |
Abstract | ||
|---|---|---|
A novel second-order-statistics-based sequential blind extraction algorithm for blind extraction of quasi-periodic signals, with time-varying period, is introduced in this paper. Source extraction is performed by sequentially converging to a solution that effectively diagonalizes autocorrelation matrices at lags corresponding to the time-varying period, which thereby explicitly exploits a key statistical nonstationary characteristic of the desired source. The algorithm is shown to have fast convergence and yields significant improvement in signal-to-interference ratio as compared to when the algorithm assumes a fixed period. The algorithm is further evaluated on the problem of separation of a heart sound signal from real-world lung sound recordings. Separation results confirm the utility of the introduced approach, and listening tests are employed to further corroborate the results. |
Year | DOI | Venue |
|---|---|---|
2009 | 10.1109/TBME.2008.2002141 | IEEE Trans. Biomed. Engineering |
Keywords | Field | DocType |
lung sound recordings,statistical nonstationarity,signal-to-interference ratio,second-order statistics,sequential blind source extraction,time-varying period,medical signal processing,blind source extraction (bse),lung,blind source separation,heart sound signal,quasi-periodic,echocardiography,quasiperiodic signals,covariance matrix,signal processing,computer simulation,normal distribution,computational complexity,algorithms,signal to interference ratio,autocorrelation,data mining,testing,heart | Convergence (routing),Signal-to-interference ratio,Audio signal,Signal processing,Computer science,Higher-order statistics,Electronic engineering,Blind signal separation,Source separation,Autocorrelation | Journal |
Volume | Issue | ISSN |
56 | 3 | 1558-2531 |
Citations | PageRank | References |
8 | 0.57 | 12 |
Authors | ||
5 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Thato Tsalaile | 1 | 13 | 1.12 |
| Reza Sameni | 2 | 185 | 17.88 |
| Saeid Sanei | 3 | 141 | 16.70 |
| Christian Jutten | 4 | 450 | 39.98 |
| Jonathon Chambers | 5 | 868 | 82.37 |