dr inż. Marcin Ciołek
- Adiunkt at Department of Automatic Control
- adaptive signal processing
- outlier detection and elimination
- sparse autoregressive models
- elimination of clicks
- elimination of impulsive disturbances
- identification of nonstationary processes determination of estimation bandwidth model order selection
- restoration of audio signals
- adaptive kalman filtering
- adaptive signal processing.
- analiza oddechu
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When estimating the correlation/spectral structure of a locally stationary process, one has to make two important decisions. First, one should choose the so-called estimation bandwidth, inversely proportional to the effective width of the local analysis window, in the way that complies with the degree of signal nonstationarity. Too small bandwidth may result in an excessive estimation bias, while too large bandwidth may cause excessive...
In this application-oriented paper we consider the problem of elimination of impulsive disturbances, such as clicks, pops and record scratches, from archive audio recordings. The proposed approach is based on bidirectional processing—noise pulses are localized by combining the results of forward-time and backward-time signal analysis. Based on the results of specially designed empirical tests (rather than on the results of theoretical analysis),...
Identification of nonstationary multivariate autoregressive processes– Comparison of competitive and collaborative strategies for joint selection of estimation bandwidth and model order
The problem of identification of multivariate autoregressive processes (systems or signals) with unknown and possibly time-varying model order and time-varying rate of parameter variation is considered and solved using parallel estimation approach. Under this approach, several local estimation algorithms, with different order and bandwidth settings, are run simultaneously and compared based on their predictive performance. First,...
Obtained scientific degrees/titles
Obtained science degreedr inż. Automatic control and robotics (Technology)
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