Rok 2008

• Modulation frequency constraints on wow and flutter determination

  Publikacja

  • P. Maziewski

  - Archives of Acoustics - Rok 2008

  Opracowane wcześniej algorytmy do określania charakterystyki kołysania i drżenia dźwięku okazały się pomocne w rekonstrukcji rzeczywistych próbek dźwiękowych, jednakże przy ich opracowaniu nie określono przedziału częstotliwości modulujących, które mogą być przez nie śledzone. Prezentowany artykuł zawiera studium pozwalające wyznaczyć brakujące przedziały częstotliwości dla trzech algorytmów śledzących: przydźwięk sieciowy, pozostałość...

  Pełny tekst do pobrania w portalu

• Modelling of acoustic heating induced by different types of sound

  Publikacja

  • A. Perelomova

  - Archives of Acoustics - Rok 2008

  Wyprowadzono równanie dynamiczne sterujące ogrzewaniem na skutek strat energii fali akustycznej dowolnego typu, okresowej i nieokresowej, w płynie ze standardową dyssypacją i przewodnictwem ciepła. Zbadano efektywność ogrzewania w przypadku dźwięku stochastycznego i regularnego.

  Pełny tekst do pobrania w portalu

• Investigation of the road noise source employing an automatic noise monitoring station

  Publikacja

  • M. Szczodrak
  • A. Czyżewski
  • J. Kotus

  - Archives of Acoustics - Rok 2008

  The paper presents a pilot investigation of noise source models in two selected localizations in the context of future dynamic noise map creation. The experiments were carried out using the automatic noise monitoring station engineered at the Multimedia Systems Departmentof the Gda´nsk University of Technology. The results of the noise measurements employing monitoring stations and its comparison to the reference values are depicted....

  Pełny tekst do pobrania w portalu

• Hearing aid fitting method based on fuzzy logic processing

  Publikacja

  • P. Suchomski
  • B. Kostek
  • A. Czyżewski

  - Archives of Acoustics - Rok 2008

  Ważnym etapem dopasowania współczesnych aparatów słuchowych jest wyznaczanie charakterystyki dynamiki słuchu. Charakterystyka ta wyznaczana jest na podstawie wyników testu skalowania głośności. Niestety wyniki te wyrażone są w skali kategorii głośności, natomiast aparaty słuchowe wymagają para-metrów numerycznych. Problem ten można rozwiązać za pomocą logiki rozmytej. W niniejszym referacie przedstawiono metodę przetwarzania rozmytego...

  Pełny tekst do pobrania w serwisie zewnętrznym

• Automatic singing quality recognition employing artificial neural networks

  Publikacja

  • P. Żwan

  - Archives of Acoustics - Rok 2008

  Celem artykułu jest udowodnienie możliwości automatycznej oceny jakości technicznej głosów śpiewaczych. Pokrótce zaprezentowano w nim stworzoną bazę danych głosów śpiewaczych oraz zaimplementowane parametry. Przy pomocy sztucznych sieci neuronowych zaprojektowano system decyzyjny, który oceniono w pięciostopniowej skali jakość techniczną głosu. Przy pomocy metod statystycznych udowodniono, że wyniki generowane przez ten system...

  Pełny tekst do pobrania w portalu

• Automatic detection and correction of detuned singing system for use with query-by-humming applications

  Publikacja

  • M. Lech

  - Archives of Acoustics - Rok 2008

  The aim of the paper is to present an idea of using the automatic detection and correction of detuned singing as a subsystem in query-by-humming (QBH) applications. The common approach to searching for a requested song basing on the melody retrieved from hummed pattern usually employs the so-called Parsons code or melody contour. In such a case information about sound pitch is discarded. It was thought out that an additional module...

  Pełny tekst do pobrania w serwisie zewnętrznym

Rok 2019

• Modelling and Measurement of Folk Guitar: Truss Rod and Strings in Numerical Analysis of Tone

  Publikacja

  • P. M. Bielski
  • M. Kujawa
  • I. Lubowiecka

  - Archives of Acoustics - Rok 2019

  The study makes an attempt to model a complete vibrating guitar including its non-linear features, specifically the tension-compression of truss rod and tension of strings. The purpose of such a model is to examine the influence of design parameters on tone. Most experimental studies are flawed by uncertainties introduced by materials and assembly of an instrument. Since numerical modelling of instruments allows for deterministic...

  Pełny tekst do pobrania w portalu

• Impact of Boundary Conditions on Acoustic Excitation of EntropyPerturbations in a Bounded Volume of Newtonian Gas

  Publikacja

  • A. Perelomova

  - Archives of Acoustics - Rok 2019

  Excitation of the entropy mode in the field of intense sound, that is, acoustic heating, is theoreticallyconsidered in this work. The dynamic equation for an excess density which specifies the entropy mode,has been obtained by means of the method of projections. It takes the form of the diffusion equation withan acoustic driving force which is quadratically nonlinear in the leading order. The diffusion coefficient isproportional...

  Pełny tekst do pobrania w portalu

• Developing assumptions for the tram noise attenuation passive system using the noise maps analysis method

  Publikacja

  • T. Nowakowski

  - Archives of Acoustics - Rok 2019

  The paper presents experimental research carried out to determine the possible actions to reduce thenoise generated by trams in a highly urbanised area. A few design strategies affecting tram ride qualityhave been presented – especially in the aspect of the acoustic phenomena. Main sources of the noisein trams were characterised. The paper includes selected results of comprehensive...

  Pełny tekst do pobrania w serwisie zewnętrznym

• Comparison of Lithuanian and Polish Consonant Phonemes Based on Acoustic Analysis – Preliminary Results

  Publikacja

  • G. Korvel
  • O. Kurasova
  • B. Kostek

  - Archives of Acoustics - Rok 2019

  The goal of this research is to find a set of acoustic parameters that are related to differences between Polish and Lithuanian language consonants. In order to identify these differences, an acoustic analysis is performed, and the phoneme sounds are described as the vectors of acoustic parameters. Parameters known from the speech domain as well as those from the music information retrieval area are employed. These parameters are...

  Pełny tekst do pobrania w portalu

• Assessment of the Effectiveness of a Short-term Hearing Aid Use in Patients with Different Degrees of Hearing Loss

  Publikacja

  • T. Poremski
  • P. Szymański
  • B. Kostek

  - Archives of Acoustics - Rok 2019

  The study presents evaluating the effectiveness of the hearing aid fitting process in the short-term use (7 days). The evaluation method consists of a survey based on the APHAB (Abbreviated Profile of Hearing Aid Benefit) questionnaire. Additional criteria such as a degree of hearing loss, number of hours and days of hearing aid use as well as the user’s experience were also taken into consideration. The outcomes of the benefit...

  Pełny tekst do pobrania w portalu

Rok 2016

• Modeling and Designing Acoustical Conditions of the Interior – Case Study

  Publikacja

  • B. Kostek
  • S. Laskowski
  • K. Mizgier

  - Archives of Acoustics - Rok 2016

  The primary aim of this research study was to model acoustic conditions of the Courtyard of the Gdańsk University of Technology Main Building, and then to design a sound reinforcement system for this interior. First, results of measurements of the parameters of the acoustic field are presented. Then, the comparison between measured and predicted values using the ODEON program is shown. Collected data indicate a long reverberation...

  Pełny tekst do pobrania w portalu

• Loudness Scaling Test Based on Categorical Perception

  Publikacja

  • B. Kostek
  • P. Odya
  • P. Suchomski

  - Archives of Acoustics - Rok 2016

  The main goal of this research study is focused on creating a method for loudness scaling based on categorical perception. Its main features, such as: way of testing, calibration procedure for securing reliable results, employing natural test stimuli, etc., are described in the paper and assessed against a procedure that uses 1/2-octave bands of noise (LGOB) for the loudness growth estimation. The Mann-Whitney U-test is employed...

  Pełny tekst do pobrania w portalu

• Can Historic Interiors with Large Cubature be Turned Acoustically Correct?

  Publikacja

  • T. Kamisiński
  • A. Kulowski
  • R. Kinasz

  - Archives of Acoustics - Rok 2016

  Historic interiors with large cubature, such as reception, theatrical, and concert halls, need to be renovated periodically if they are to be preserved as cultural heritage for future generations. In such cases it is necessary to maintain appropriate balance between requirements imposed by heritage conservation authorities office which are usually being given a higher priority, applicable safety regulations, and the comfort of...

  Pełny tekst do pobrania w portalu

Rok 2021

• Magnetosonic Excitation of the Entropy Perturbations in a Plasma with Thermal Conduction Depending on Temperature

  Publikacja

  • A. Perelomova

  - Archives of Acoustics - Rok 2021

  Nonlinear excitation of the entropy perturbations by magnetosonic waves in a uniform and infinite plasma model is considered. The wave vector of slow or fast mode forms an arbitrary angle (0 B B ) with the equilibrium straight magnetic field, and all perturbations are functions of the time and longitudinal coordinate. Thermal conduction is the only factor which destroys isentropicity of wave perturbations and causes the nonlinear...

  Pełny tekst do pobrania w portalu

Rok 2020

• Magnetoacoustic Heating of Plasma Caused by Periodic MagnetosoundPerturbations with Discontinuities in a Quasi-Isentropic Magnetic Gas

  Publikacja

  • A. Perelomova

  - Archives of Acoustics - Rok 2020

  The magnetoacoustic heating of plasma by harmonic or periodic saw-tooth perturbations at a trans-ducer is theoretically studied. The planar fast and slow magnetosound waves are considered. The wavevector may form an arbitrary angleθwith the equilibrium straight magnetic field. In view of variableθand plasma-β, the description of magnetosound perturbations and appropriate magnetosound heatingis fairly difficult. The scenario of...

  Pełny tekst do pobrania w portalu

• Impact of Spatial Noise Correlation on Bearing Accuracy in DIFAR Systems

  Publikacja

  • M. Rudnicki
  • J. Marszal
  • R. Salamon

  - Archives of Acoustics - Rok 2020

  DIFAR type underwater passive systems are one of the more commonly used tools for detecting submarines. At the design stage, which usually uses computer simulations, it is necessary to generate acoustic noise of the sea. It has been shown that correlating noise significantly reduces these errors compared to the assumption that noise is uncorrelated. In addition, bearing errors have been shown to be the same in systems with a commonly...

  Pełny tekst do pobrania w portalu

Rok 2010

• Long-term comparative evaluation of an acoustic climate in selected schools before and after the acoustic treatment

  Publikacja

  • J. Kotus
  • M. Szczodrak
  • A. Czyżewski
  • B. Kostek

  - Archives of Acoustics - Rok 2010

  The results of long-term continuous noise measurements in two selected schools are presented in the paper. Noise characteristics were measured continuously there for approximately 16 months. Measurements started eight months prior to the acoustic treatment of the school corridors of both schools. An evaluation of the acoustic climates in both schools, before and after the acoustic treatment, was performed based on comparison of...

  Pełny tekst do pobrania w portalu

Rok 2005

• Language specific spectra generated in the human vocal tract

  Publikacja

  • K. Wojan

  - Archives of Acoustics - Rok 2005

Rok 2006

• Investigation of noise threats and their impact on hearing in selected schools - a pilot study.

  Publikacja

  • J. Kotus
  • B. Kostek

  - Archives of Acoustics - Rok 2006

  Noise measurements conducted in selected schools in Gdansk area are presented in this paper. The main aim of this research was to determine noise threats at schools. Some objective measurements of the acoustic climate were performed employing a noise monitoring station engineered at the Multimedia System Department, Gdansk University of Technology. Simultaneously, subjective noise annoyance examinations were carried out among pupils...

  Pełny tekst do pobrania w portalu

• Influence of vortices on a progressive quasi-plane acoustic wave

  Publikacja

  • A. Perelomova

  - Archives of Acoustics - Rok 2006

  Metoda separacji składowych przepływu ogólnego doprowadza do powstania układów równań dla wszystkich możliwych typów ruchu. Szczególny przypadek oddziaływań dotyczy rozpraszania fali akustycznej na wirach. W rezultacie separacji układu bilansu powstają równania pierwszego rzędu względem czasu dla fal akustycznych o przeciwnych kierunkach propagacji. Zasugerowane są ilustracje.

  Pełny tekst do pobrania w portalu

• Hydroacustic activity of the ship propeller operation

  Publikacja

  • J. Szantyr
  • T. Koronowicz

  - Archives of Acoustics - Rok 2006

  Praca przedstawia działanie śrub okretowych jako źródła sygnałów hydroakustycznych, związanych przede wszystkim z różnymi formami kawitacji występującymi podczas pracy śrub.

  Pełny tekst do pobrania w portalu

• High quality speech codec employing sines+noise+transients model

  Publikacja

  • M. Kulesza
  • Ł. Litwic
  • G. Szwoch
  • A. Czyżewski

  - Archives of Acoustics - Rok 2006

  A method of high quality wideband speech signal representation employing sines+transients+noise model is presented. The need for a wideband speech coding approach as well as various methods for analysis and synthesis of sines, residual and transient states of speech signal is discussed. The perceptual criterion is applied in the proposed approach during encoding of sines amplitudes in order to reduce bandwidth requirements and...

  Pełny tekst do pobrania w portalu

• Digital mono-pulse method in cylindrical antena.

  Publikacja

  • W. Leśniak
  • J. Marszal
  • R. Salamon
  • M. Rudnicki
  • A. Schmidt

  - Archives of Acoustics - Rok 2006

  Artykuł prezentuje metodę poprawy dokładności namiaru w wielowiązkowym sonarze z anteną cylindryczną. Metoda oparta jest na metodzie monopulsowej, wykorzystywanej w radarach i sonarach. Metoda zapewnia dobrą dokładność namiaru dla pojedynczego impulsu sondującego. Jedyna modyfikacja w stosunku do metody oryginalnej polega na wytworzeniu dwóch odchylonych wiązek i wykonaniu prostych obliczeń. Symulacja komputerowa dowodzi , że uzyskanie...

  Pełny tekst do pobrania w portalu

• Contactless hearing aid designed for infants

  Publikacja

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

  - Archives of Acoustics - Rok 2006

  It is a well known fact that language development through home intervention for a hearing-impaired infant should start in the early months of a newborn baby's life. The aim of this paper is to present a concept of a contactless digital hearing aid designed especially for infants. In contrast to all typical wearable hearing aid solutions (ITC, ITE, BTE), the proposed device is mounted in the infant's bed with any parts of its set-up...

  Pełny tekst do pobrania w portalu

• Confronting representative spectral structures of vocal tract pulse responses

  Publikacja

  • K. Wojan

  - Archives of Acoustics - Rok 2006

• Confronting representative spectral structures of vocal tract pulse responses

  Publikacja

  • Z. Wojan
  • W. Lis
  • K. Wojan

  - Archives of Acoustics - Rok 2006

  Artykuł niniejszy jest kolejnym w cyklu prac publikowanych na łamach Materiałów OSA, które poświęcono problemowi klasyfikacji formalnej leksemów odmiennych języków.W pracy omówiono metody i rezultaty automatycznego kwalifikowania wybranych leksemów trzech systemów języka na podstawie konfrontowania ich cyfrowych reprezantacji.

  Pełny tekst do pobrania w portalu

Rok 2018

• In Memoriam Professors Marianna Sankiewicz-Budzyński and Gustaw K.E. Budzyński - Founders of the Polish Audio Engineering

  Publikacja

  • A. Czyżewski
  • B. Kostek

  - Archives of Acoustics - Rok 2018

  Biography and scientific achievements of Professors Marianna Sankiewicz-Budzyński and Gustaw K.E. Budzyński - Founders of the Polish Audio Engineering.

  Pełny tekst do pobrania w portalu

• Decomposition of Acoustic and Entropy Modes in a Non-Isothermal Gas Affected by a Mass Force

  Publikacja

  • A. Perelomova
  • S. Leble

  - Archives of Acoustics - Rok 2018

  Diagnostics and decomposition of atmospheric disturbances in a planar flow are considered in this work. The study examines a situation in which the stationary equilibrium temperature of a gas may depend on the vertical coordinate due to external forces. The relations connecting perturbations are analytically established. These perturbations specify acoustic and entropy modes in an arbitrary stratified gas affected by a constant...

  Pełny tekst do pobrania w portalu

Rok 2015

• In Memoriam Professor Jerzy KAPELEWSKI

  Publikacja

  • E. Kozaczka

  - Archives of Acoustics - Rok 2015

  Professor Jerzy Kapelewski In Memoriam

  Pełny tekst do pobrania w portalu

• Impact of Microphytobenthos Photosynthesis on the Characteristics of the Echo Signal from Baltic Sandy Sediments

  Publikacja

  • N. Gorska
  • E. Kowalska-Duda
  • J. Marszal
  • J. Schmidt
  • Z. Klusek

  - Archives of Acoustics - Rok 2015

  The understanding the influence of biological processes on the characteristics of the signals backscattered by the sea floor is crucial in the development of the hydroacoustical benthic habitat classification techniques. The impact of the microphytobenthos photosynthesis on the acoustical backscattering properties of the Atlantic sandy sediments was previously demonstrated by Holliday et al. (2004) and Wildman and Huettel (2012). To...

  Pełny tekst do pobrania w portalu

• "Creating a numerical model of noise conditions based on the analysis of traffic volume changes in cities with low and medium structure.

  Publikacja

  • K. Marciniuk
  • B. Kostek

  - Archives of Acoustics - Rok 2015

  The subject of this research study is to analyze noise conditions of the selected area in the city of Gdańsk using data related to traffic volume changes during a day. This is because daily distribution of noise levels is much more helpful for noise control and reduction than traditional maps with Lden levels indicated. Calculations are made with the use of a numerical model developed at the Gdansk Univ. of Technology and implemented...

  Pełny tekst do pobrania w serwisie zewnętrznym

Rok 2003

• Heating caused by a non periodic ultrasound. Theory and calculations on pulse and stationary sources.

  Publikacja

  • A. Perelomova

  - Archives of Acoustics - Rok 2003

  Przedstawiono teorię ewolucji ogrzewania na skutek przejścia fali akustycznej każdego typu. Przedyskutowano obliczenia na podstawie nowych wzorów dla fali impulsowej i uderzeniowej. Wzory zgadzają się z klasycznymi w wypadku fal okresowych.

  Pełny tekst do pobrania w portalu

• Digital analysis of ethnic speech – extraction of information code

  Publikacja

  • K. Wojan

  - Archives of Acoustics - Rok 2003

Rok 2011

• Formation of acoustic field in rooms

  Publikacja

  • K. Leo

  - Archives of Acoustics - Rok 2011

  Paper describes known form literature method of sound diffusity index assesment, which utilizes impulse response of the room. Process of froming diffused sound field using this method was investigated.Increase of sound diffusity index in time was noted in rooms differing in shape,volume and reverberation time. Exponential growth of sound diffusion index was noted which correlates with other acoustical rooms measures.

• Creating Acoustic Maps Employing Supercomputing Cluster

  Publikacja

  • A. Czyżewski
  • J. Kotus
  • M. Szczodrak

  - Archives of Acoustics - Rok 2011

  The implemented online urban noise pollution monitoring system is presented with regard to its conceptual assumptions and technical realization. A concept of the noise source parameters dynamic assessment is introduced. The idea of noise modeling, based on noise emission characteristics and emission simulations, was developer and practically utilized in the system. Furthermore, the working system architecture and the data acquisition...

  Pełny tekst do pobrania w portalu

• Comparison of various speech time-scale modificartion methods

  Publikacja

  • A. Kupryjanow
  • A. Czyżewski

  - Archives of Acoustics - Rok 2011

  The objective of this work is to investigate the influence of the different time-scale modification (TSM) methods on the quality of the speech stretched up using the designed non-uniform real-time speech time-scale modification algorithm (NU-RTSM). The algorithm provides a combination of the typical TSM algorithm with the vowels, consonants, stutter, transients and silence detectors. Based on the information about the content and...

Rok 2013

• Features of Nonlinear Sound Propagation in Vibrationally Excited Gases

  Publikacja

  • A. Perelomova
  • M. Kuśmirek-Ochrymiuk

  - Archives of Acoustics - Rok 2013

  Weakly nonlinear sound propagation in a gas where molecular vibrational relaxation takes place is studied. New equations which govern the sound in media where the irreversible relaxation may take place are derived and discussed. Their form depends on the regime of excitation of oscillatory degrees of freedom, equilibrium (reversible) or non-equilibrium (irreversible), and on the comparative frequency of the sound in relation to...

  Pełny tekst do pobrania w portalu

• Detection of Objects Buried in the Sea Bottom with the Use of Parametric Echosounder

  Publikacja

  • E. Kozaczka
  • G. Grelowska
  • S. Kozaczka

  - Archives of Acoustics - Rok 2013

  The paper contains results of a in situ research main task of which was to detect objects buried, partially or completely, in the sea bottom. Object detecting technologies employing acoustic wave sources based on nonlinear interaction of elastic waves require application of parametric sound sources. Detection of objects buried in the sea bottom with the use of classic hydroacoustic devices such as the sidescan sonar or multibeam...

  Pełny tekst do pobrania w portalu

• Creating Dynamic Maps of Noise Threat Using PL-Grid Infrastructure

  Publikacja

  • M. Szczodrak
  • J. Kotus
  • B. Kostek
  • A. Czyżewski

  - Archives of Acoustics - Rok 2013

  The paper presents functionality and operation results of a system for creating dynamic maps of acoustic noise employing the PL-Grid infrastructure extended with a distributed sensor network. The work presented provides a demonstration of the services being prepared within the PLGrid Plus project for measuring, modeling and rendering data related to noise level distribution in city agglomerations. Specific computational environments,...

  Pełny tekst do pobrania w portalu

Rok 2014

• Experiments and FE analyses on airborne sound properties of composite structural insulated panels

  Publikacja

  • A. Wawrzynowicz
  • M. Krzaczek
  • J. Tejchman

  - Archives of Acoustics - Rok 2014

  Artykuł przedstawia wyniki doświadczalne i numeryczne odnośnie właściwości akustycznych paneli budowlanych. Jako panele zastosowano płyty kompozytowe konstrukcyjno-izolacyjne CSIP. Obliczenia numeryczne wykonano MES stosując podejście zaproponowane w pakiecie ABAQUS. Wyniki MES porównano bezpośrednio z doświadczeniami. Zaproponowano różne spsoby poprawy właściwości akustycznych paneli.

  Pełny tekst do pobrania w portalu

• Experimental Study of Silent Sonar

  Publikacja

  • J. Marszal

  - Archives of Acoustics - Rok 2014

  Stealth is a frequent requirement in military applications and involves the use of devices whose signals are difficult to intercept or identify by the enemy. The silent sonar concept was studied and developed at the Department of Marine Electronic Systems of the Gdansk University of Technology. The work included a detailed theoretical analysis, computer simulations and some experimental research. The results of the theoretical...

  Pełny tekst do pobrania w portalu

• Detection Range of Intercept Sonar for CWFM Signals

  Publikacja

  • J. Marszal
  • R. Salamon

  - Archives of Acoustics - Rok 2014

  Stealth in military sonars applications may be ensured through the use of low power signals making them difficult to intercept by the enemy. In recent years, silent sonar design has been investigated by the Department of Marine Electronic Systems of the Gdansk University of Technology. This article provides an analysis of how an intercept sonar operated by the enemy can detect silent sonar signals. To that end a theoretical intercept...

  Pełny tekst do pobrania w portalu

• Classification of Music Genres Based on Music Separation into Harmonic and Drum Components . Klasyfikacja gatunków muzycznych wykorzystująca separację instrumentów muzycznych

  Publikacja

  • A. Rosner
  • B. Schuller
  • B. Kostek

  - Archives of Acoustics - Rok 2014

  This article presents a study on music genre classification based on music separation into harmonic and drum components. For this purpose, audio signal separation is executed to extend the overall vector of parameters by new descriptors extracted from harmonic and/or drum music content. The study is performed using the ISMIS database of music files represented by vectors of parameters containing music features. The Support Vector...

  Pełny tekst do pobrania w portalu

• Auditory Display Applied to Research in Music and Acoustics . Obrazowanie dźwiękowe w muzyce i akustyce.

  Publikacja

  • B. Kostek

  - Archives of Acoustics - Rok 2014

  This paper presents a relationship between Auditory Display (AD) and the domains of music and acoustics. First, some basic notions of the Auditory Display area are shortly outlined. Then, the research trends and system solutions within the fields of music technology, music information retrieval and music recommendation and acoustics that are within the scope of AD are discussed. Finally, an example of AD solution based on gaze...

  Pełny tekst do pobrania w portalu

Rok 2012

• Editor's Farewell

  Publikacja

  • B. Kostek

  - Archives of Acoustics - Rok 2012

  By this occasion, I would like to mention the major milestones Archives of Acoustics experienced during the last years. For some years, we concentrated our efforts on introducing Archives of Acoustics to the ISI Web of Knowledge and the Journal Citation Report databases.We achieved this aim, and since 2007 Archive of Acoustics has been referenced in the Journal Citation Report. Accordingly, our next object was to obtain the Impact...

  Pełny tekst do pobrania w portalu

Rok 2002

• Digital waveguide models of the panpipes

  Publikacja

  • A. Czyżewski
  • J. Jaroszuk
  • B. Kostek

  - Archives of Acoustics - Rok 2002

  W artykule przedstawiono główne cechy syntezy falowodowej. Omówiono cechy instrumentu fletni Pana. Przedyskutowano cechy zaproponowanych dwóch modeli fletni Pana różniących się złożonością obliczeniową. Pokazano szczegóły implementacyjne tych modeli, a także uzyskane wyniki symulacji dźwięków w modelach. Dokonano porównania dźwięków rzeczywistych i uzyskanych w wyniku syntezy falowodowej.

  Pełny tekst do pobrania w portalu

Rok 2007

• Determining the noise impact on hearing using psychoacoustical noise dosimeter

  Publikacja

  • A. Czyżewski
  • J. Kotus
  • B. Kostek

  - Archives of Acoustics - Rok 2007

  This research study presents the designed noise dosimeter based on psychoacoustical properties of the human hearing system and, at the same time. evaluation of time and frequency characteristics of noise. The designed noise dosimeter enables assessing temporary threshold shift (TTS) in critical hands in real time. In this way it is possible monitoring the hearing threshold shift continuously for people who stay in the harmful noise...

  Pełny tekst do pobrania w portalu

• Dependence of harmonic generation on primary wave pressure distribution

  Publikacja

  • A. Baranowska

  - Archives of Acoustics - Rok 2007

  Praca dotyczy numerycznego badania zagadnienia wytwarzania harmonicznych ciśnienia podczas rozchodzenia się fal o skończonej amplitudzie, promieniowanych przez źródła kołowe o różnych rozkładach. Model matematyczny zbudowano w oparciu o równanie KZK. Do numerycznego rozwiązania problemu zastosowano metodę bilansu harmonicznych i metodę różnic skończonych. Analizowano zmiany składowych harmonicznych ciśnienia w obrębie wiązki akustycznej....

  Pełny tekst do pobrania w portalu

Rok 2017

• DAB vs DAB+ Radio Broadcasting: a Subjective Comparative Study

  Publikacja

  • P. Falkowski-Gilski

  - Archives of Acoustics - Rok 2017

  In the age of digital media, delivering high quality content to consumers is one of the most demanding tasks. There exist numerous broadcasting standards, with different pros and cons, and the DAB/DAB (Digital Audio Broadcasting) system is one of the most popular among them. From an engineer’s perspective, efficient resource management under limited bandwidth conditions has always been a challenge. In this paper a subjective quality...

  Pełny tekst do pobrania w portalu