prof. dr hab. inż. Maciej Niedźwiecki
Zatrudnienie
- Profesor w Katedra Sygnałów i Systemów WETI
Media społecznościowe
Kontakt
- maciej.niedzwiecki@pg.edu.pl
Profesor
- Miejsce pracy
- Gmach Elektroniki Telekomunikacji i Informatyki pokój 548
- Telefon
- (58) 347 25 19
Wybrane publikacje
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Dynamic mass measurement in checkweighers using a discrete time-variant low-pass filter
Conveyor belt type checkweighers are complex mechanical systems consisting of a weighing sensor (strain gauge load cell, electrodynamically compensated load cell), packages (of different shapes, made of different materials) and a transport system (motors, gears, rollers). Disturbances generated by the vibrating parts of such a system are reflected in the signal power spectra in a form of strong spectral peaks, located usually in...
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Application of regularized Savitzky–Golay filters to identification of time-varying systems
Savitzky–Golay (SG) filtering is a classical signal smoothing technique based on the local least squares approximation of the analyzed signal by a linear combination of known functions of time (originally — powers of time, which corresponds to polynomial approximation). It is shown that the regularized version of the SG algorithm can be successfully applied to identification of time-varying finite impulse response (FIR) systems....
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Elimination of Impulsive Disturbances From Archive Audio Signals Using Bidirectional Processing
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),...
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