Wyniki wyszukiwania dla: DIGITAL SIGNAL PROCESSING

• Sampling Theory in Signal and Image Processing

  Czasopisma

  ISSN: 1530-6429

• Foundations in Signal Processing, Communications and Networking

  Czasopisma

  ISSN: 1863-8538 , eISSN: 1863-8546

• IEEE Open Journal of Signal Processing

  Czasopisma

  eISSN: 2644-1322

• Measurements of Two-phase Flows in Pipelines Using Radioisotopes and Statistical Signal Processing

  Publikacja

  • R. Hanus
  • M. Zych
  • A. Golijanek-Jędrzejczyk

  - Rok 2022

  This paper presents an application of radiotracers and gamma absorption method in two-phase flow measurements in pipelines. Two different methods were implemented to analysis of acquired signals. Investigated methods are based on the cross-correlation function and the phase of the cross-spectral density distribution. The examples presented in the article illustrate the application of the radioisotopes to evaluation of liquid-gas...

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• Lamb wave based structural damage detection using cointegration and fractal signal processing

  Publikacja

  • P. Dao
  • W. Staszewski
  • P. B. Dao

  - Mechanical Systems and Signal Processing - Rok 2014

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• International Journal of Signal Processing, Image Processing and Pattern Recognition

  Czasopisma

  ISSN: 2005-4254

• Signal Processing in the Investigation of Two-phase Liquid-gas Flow by Gamma-ray Absorption

  Publikacja

  • R. Hanus
  • M. Zych
  • M. Jaszczur
  • A. Szlachta
  • A. Golijanek-Jędrzejczyk

  - Rok 2019

  n this paper, the use of the gamma-absorption method applied in the investigation of the two-phase liquid-gas flow in the pipeline is described. An example of its application to the air transported by water in a horizontal pipeline is evaluated. In the measurements, Am-241 radioactive sources and probes with Nal (Tl) scintillation crystals have been used. The signals from the radiometric set were used to determine the velocity...

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• Liquid crystal thermography and true-colour digital image processing in engineering and biomedical research

  Publikacja

  • J. Stąsiek
  • A. Stąsiek
  • D. Mikielewicz

  - Rok 2008

  Wykład dotyczy zastosowań termografii ciekłokrystalicznej i analizy kolorowych obrazów w nieniszczących badaniach inżynierksich oraz w medycynie.

• seafloor characterisation combined approach using multibeam sonar echo signal processing and image analysis

  Publikacja

  • Z. Łubniewski
  • A. Stepnowski
  • A. Chybicki

  - Rok 2010

  The authors propose the approach to seafloor characterisation which relies on the combined, concurrent use of two different techniques: (i) multibeam sonar image analysis and (ii) multibeam seabed echoes processing. The first technique is based on constructing the grey-level sonar images of the seabed extracted from the echoes received in the consecutive soundings. Then, the set of parameters describing the local region of sonar...

• Fully Tunable Analog Biquadratic Filter for Low-Power Auditory Signal Processing in CMOS Technologies

  Publikacja

  • W. Jendernalik
  • J. Jakusz

  - Electronics - Rok 2024

  A novel Gm-C structure of a second-order continuous-time filter is proposed that allows for the independent control of the filter’s natural frequency (ω0) and quality factor (Q). The structure consists of two capacitors and four transconductors. Two transconductors together with the capacitors form a lossless second-order circuit with tunable ω0. The other two transconductors form a variable gain amplifier (VGA) which realizes...

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• International Journal of Image, Graphics and Signal Processing

  Czasopisma

  ISSN: 2074-9074

• IEE PROCEEDINGS-VISION IMAGE AND SIGNAL PROCESSING

  Czasopisma

  ISSN: 1350-245X

• IEEE Journal of Selected Topics in Signal Processing

  Czasopisma

  ISSN: 1932-4553 , eISSN: 1941-0484

• Case Studies in Mechanical Systems and Signal Processing

  Czasopisma

  eISSN: 2351-9886

• Journal of Information Hiding and Multimedia Signal Processing

  Czasopisma

  ISSN: 2073-4212

• International Journal of Circuits, Systems and Signal Processing

  Czasopisma

  ISSN: 1998-4464

• Sampling Theory, Signal Processing, and Data Analysis

  Czasopisma

  ISSN: 2730-5716 , eISSN: 2730-5724

• EVALUATION OF LIQUID-GAS FLOW IN PIPELINE USING GAMMA-RAY ABSORPTION TECHNIQUE AND ADVANCED SIGNAL PROCESSING

  Publikacja

  • R. Hanus
  • M. Zych
  • V. Mosorov
  • A. Golijanek-Jędrzejczyk
  • M. Jaszczur
  • A. Andruszkiewicz

  - Metrology and Measurement Systems - Rok 2021

  Liquid-gas flows in pipelines appear in many industrial processes, e.g. in the nuclear, mining, and oil industry. The gamma-absorption technique is one of the methods that can be successfully applied to study such flows. This paper presents the use of thegamma-absorption method to determine the water-air flow parameters in a horizontal pipeline. Three flow types were studied in this work: plug, transitional plug-bubble,...

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• MATCHED FILTER APPROACH FOR MICROSEISMIC SIGNAL PROCESSING OF REAL DATA FROM EAST POMERANIA SHALE GAS

  Publikacja

  • M. Kmieć
  • M. Antoszkiewicz
  • R. Jankowski
  • M. Szkodo

  - Rok 2017

  The microseismic monitoring is a method of monitoring of fracture propagation during hydraulic fracturing (HF)process. An array of several hundred geophones is placed on the surface to record little ground tremors induced by fracturing process. Filtration and summation of signals from geophones is essential to identify and locate fracturing events from underground. Authors propose a method of matched filtering, that is usually...

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• Efficient FPGA Implementation of an RFIR Filter Using the APC–OMS Technique with WTM for High-Throughput Signal Processing

  Publikacja

  • K. Satish Reddy
  • S. Madhavan
  • P. Falkowski-Gilski
  • P. B. Divakarachari
  • A. Mathiyalagan

  - Electronics - Rok 2022

  Nowadays, Finite Impulse Response (FIR) filters are used to change the attributes of a signal in the time or frequency domain. Among FIR filters, a reconfigurable filter has the advantage of changing the coefficient in real-time, while performing the operation. In this paper, the Anti-Symmetric Product Coding (APC) and Odd Multiple Storage (OMS) modules are utilized to implement the reconfigurable FIR filter (RFIR–APC–OMS). Herein,...

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• IEEE Transactions on Circuits and Systems II: Analog and Digital Signal Processing

  Czasopisma

  ISSN: 1057-7130

• IEEE Transactions on Signal and Information Processing over Networks

  Czasopisma

  ISSN: 2373-776X

• Institute of Electrical and Electronics Engineers Signal Processing Magazine

  Czasopisma

  ISSN: 1053-5888 , eISSN: 1558-0792

• The Processing Procedure for the Interpretation of Microseismic Signal Acquired from a Surface Array During Hydraulic Fracturing in Pomerania Region in Poland

  Publikacja

  • M. Antoszkiewicz
  • M. Kmieć
  • P. Szewczuk
  • M. Szkodo
  • R. Jankowski

  - Rok 2017

  Hydraulic fracturing is a procedure of injecting high pressure fluid into the wellbore in order to break shell rock and facilitate gas flow. It is a very costly procedure and, if not conducted properly, it may lead to environmental pollution. To avoid costs associated with pumping fluid outside the perspective (gas rich) zone and improve one’s knowledge about the reservoir rock, microseismic monitoring can be applied. The method...

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• Signal Receiving and Processing Platform of the Experimental Passive Radar for Intelligent Surveillance System Using Software Defined Radio Approach

  Publikacja

  • B. Szlachetko
  • A. Lewandowski

  - Rok 2010

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• <title>Measurements of SIMCON 3.1 LLRF control signal processing quality for VUV free-electron laser FLASH</title>

  Publikacja

  • R. Pietrasik
  • W. Giergusiewicz
  • W. Jalmuzna
  • K. Pozniak
  • R. Romaniuk
  • S. Simrock
  • R. S. Romaniuk

  - Rok 2006

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• System przetwarzania i wizualizacji sygnału mowy dla potrzeb lingwistycznych = System of speech signal processing and visualisation of the results

  Publikacja

  • Z. Wojan
  • W. Lis
  • K. Wojan

  - Rok 2005

  W artykule przedstawiono sposób przetwarzania i wizualizacji sygnału mowy w formie prostego w obsłudze i relatywnie niedrogiego urządzenia do nagrywania sygnału akustycznego oraz przetwarzania cyfrowego wyselekcjonowanych fragmentów i wizualizacji uzyskanych rezultatów przekształceń. Zastosowano do tego celu komputer z kartą dźwiękową. Przetwarzanie cyfrowe oraz wizualizacja dokonywana była w oparciu o program MATLAB bezpośrednio...

• INTERNATIONAL JOURNAL OF ADAPTIVE CONTROL AND SIGNAL PROCESSING

  Czasopisma

  ISSN: 0890-6327 , eISSN: 1099-1115

• System przetwarzania i wizualizacji sygnału mowy dla potrzeb lingwistycznych [A system of speech signal processing and visualisation for linguistic purposes]

  Publikacja

  • K. Wojan

  - Rok 2005

• Improving listeners' experience for movie playback through enhancing dialogue clarity in soundtracks

  Publikacja

  • K. Łopatka
  • A. Czyżewski
  • B. Kostek

  - DIGITAL SIGNAL PROCESSING - Rok 2016

  This paper presents a method for improving users' quality of experience through processing of movie soundtracks. The dialogue clarity enhancement algorithms were introduced for detecting dialogue in movie soundtrack mixes and then for amplifying the dialogue components. The front channel signals (left, right, center) are analyzed in the frequency domain. The selected partials in the center channel signal, which yield high disparity...

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• Localization of impulsive disturbances in audio signals using template matching

  Publikacja

  • M. Niedźwiecki
  • M. Ciołek

  - DIGITAL SIGNAL PROCESSING - Rok 2015

  In this paper, a new solution to the problem of elimination of impulsive disturbances from audio signals, based on the matched filtering technique, is proposed. The new approach stems from the observation that a large proportion of noise pulses corrupting audio recordings have highly repetitive shapes that match several typical “patterns”. In many cases a representative set of exemplary pulse waveforms can be extracted from the...

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• Self-tuning adaptive frequency tracker

  Publikacja

  • M. Meller

  - DIGITAL SIGNAL PROCESSING - Rok 2014

  An automatic gain tuning algorithm is proposed for a recently introduced adaptive notch filter. Theoretical analysis and simulations show that, under Gaussian random-walk type assumptions, the proposed extension is capable of adjusting adaptation gains of the filter so as to minimize the mean-squared frequency tracking error without prior knowledge of the true frequency trajectory. A simplified one degree of freedom version of...

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• Identification of nonstationary multivariate autoregressive processes– Comparison of competitive and collaborative strategies for joint selection of estimation bandwidth and model order

  Publikacja

  • M. Niedźwiecki
  • M. Ciołek

  - DIGITAL SIGNAL PROCESSING - Rok 2018

  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,...

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• Parallel frequency tracking with built-in performance evaluation

  Publikacja

  • M. Meller
  • M. Niedźwiecki

  - DIGITAL SIGNAL PROCESSING - Rok 2013

  The problem of estimation of instantaneous frequency of a nonstationary complex sinusoid (cisoid) buried in wideband noise is considered. The proposed approach employs a bank of adaptive notch filters, extended with a nontrivial performance assessment mechanism which automatically chooses the best performing filter in the bank. Additionally, a computationally attractive method of implementing the bank is proposed. The new structure...

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• ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING

  Czasopisma

  ISSN: 0925-1030 , eISSN: 1573-1979

• Contactless Hearing Aid for Infants Employing Signal Processing Algorithms. [Bezkontaktowy aparat słuchowy dla niemowląt wykorzystujący algorytmy przetwarzania sygnału]

  Publikacja

  • M. Kulesza
  • P. Dalka
  • B. Kostek

  - Rok 2006

  Zaprojektowany bezkontaktowy aparat słuchowy umiejscawiany jest w łóżeczku niemowlęcia. Aparat składający się z matrycy 4 mikrofonów oraz prototypowej karty z procesorem DSP pracuje w polu swobodnym. Przetworzony sygnał mowy emitowany jest z wykorzystaniem miniaturowych głośników. Opracowane algorytmy pozwalają na elminację akustycznych sprzężeń zwrotnych, które mogą wystepować ze względu na niewielką odległość mikrofonów od głośników...

• Journal of Signal Processing Systems for Signal Image and Video Technology

  Czasopisma

  ISSN: 1939-8018 , eISSN: 1939-8115

• IET Signal Processing

  Czasopisma

  ISSN: 1751-9675 , eISSN: 1751-9683

• Instrumentation optical fibres for wave transformation, signal processing, sensors, and photonic functional components, manufactured at Białystok University of Technology in Dorosz Fibre Optics Laboratory

  Publikacja

  • R. Romaniuk
  • R. S. Romaniuk

  - Bulletin of the Polish Academy of Sciences Technical Sciences - Rok 2014

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• Signal Image and Video Processing

  Czasopisma

  ISSN: 1863-1703 , eISSN: 1863-1711

• Signal Processing: An International Journal (SPIJ)

  Czasopisma

  ISSN: 1985-2339

• European Signal Processing Conference

  Konferencje

• International Conference on Image and Signal Processing

  Konferencje

• International Workshop on Multimedia Signal Processing

  Konferencje

• International Conference on Information, Communications and Signal Processing

  Konferencje

• IEEE International Conference on Acoustics, Speech and Signal Processing

  Konferencje

• IEEE Symposium on Computational Intelligence in Image and Signal Processing

  Konferencje

• International Conference on Advanced Technologies For Signal & Image Processing

  Konferencje

• IEEE International Workshop on Neural Networks for Signal Processing

  Konferencje

• Design of highly linear tunable CMOS OTA for continuous-time filters

  Publikacja

  • S. Kozieł
  • S. Szczepański

  - IEEE Transactions on Circuits and Systems II: Analog and Digital Signal Processing - Rok 2002

  W pracy przedstawiono analityczną metodę projektowania wzmacniaczy transkon-duktancyjnych CMOS o bardzo dobrej liniowości. Zaproponowano dwie wersje układu różniące się umiejscowieniem dodatkowej pary różnicowej służącej do kompensacji nieliniowości charakterystyki przejściowej. Praca zawiera wyniki symulacji pełnych wersji obu układów otrzymane przy użyciu symulatora SPICE.