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• Investigation of the Effect of Non-Flat Surfaces on the Performance of Perforated Acoustic Absorber

  Zahra HASHEMI, Ali FAHIM, Mohammad Reza MONAZZAM

  2023-04-21

  171–181
• Utilizing Hollow-Structured Bamboo as Natural Sound Absorber

  Azma PUTRA, Fazlin Binti Abd KHAIR, Mohd Jailani Mohd NOR

  2015-08-26

  601–608
• Method for Calculating the Sound Absorption Coefficient for a Variable Range of Incidence Angles

  Sergio Alfio YORI

  2020-02-12

  67–75
• Measurements of the Sound Absorption Coefficient of Auditorium Seats for Various Geometries of the Samples

  Jarosław RUBACHA, Adam PILCH, Marcin ZASTAWNIK

  483–488
• A Multi-Layer Micro-Perforated Panel Structure Based on Curled Space for Broadband Sound Absorption at Low Frequencies

  Jiaming CHU, Xiao LIANG, Zhen YANG, Haofeng LIANG, Tao CHEN, Liang SU, Zhuo ZHOU

  2023-10-09

  529–538
• Optimization of Multistep Cavity Configuration to Extend Absorption Bandwidth of Micro Perforated Panel Absorber

  Iman FALSAFI, Abdolreza OHADI

  2018-01-24

  187–195
• Estimation of Metal Foam Microstructure Parameters for Maximum Sound Absorption Coefficient in Specified Frequency Band Using Particle Swarm Optimisation

  Rohollah FALLAH MADVARI, Mohsen NIKNAM SHARAK, Mahsa JAHANDIDEH TEHRANI, Milad ABBASI

  2022-03-10

  33–42
• Method of Determining the Sound Absorbing Coefficient of Materials within the Frequency Range of 5 000–50 000 Hz in a Test Chamber of a Volume of about 2 m3

  Witold MIKULSKI

  177–183
• A Rough Estimation of Acoustics of the Cuboidal Room with Impedance Walls

  Anna KOCAN-KRAWCZYK, Adam BRAŃSKI

  2018-05-11

  227–233
• Influence of the Plaster Physical Structure on Indoor Acoustics

  Edyta PRĘDKA, Adam BRAŃSKI, Małgorzata WIERZBIŃSKA

  2021-08-24

  539–545
• Method of Testing of Sound Absorption Properties of Materials Intended for Ultrasonic Noise Protection

  Dariusz PLEBAN

  191–195
• Sound Absorption Behavior of Polyurethane Foam Composites with Different Ethylene Propylene Diene Monomer Particles

  Wenbo ZHU, Shuming CHEN, Yebin WANG, Tongtong ZHU, Yang JIANG

  2018-07-11

  403–411
• Modelling the Acoustic Properties of Baffles Made of Porous and Fibrous Materials

  Krzysztof KOSAŁA

  2024-04-12

  345–357
• Sensitivity Analysis of the Estimation of the Single-Number Sound Absorption Evaluation Index $DL_α$

  Wojciech BATKO, Paweł PAWLIK, Grażyna WSZOŁEK

  2017-11-13

  689–696
• Ultrasonic and hypersonic investigations of structural relaxation in aqueous solutions of Hexamethylphosphortriamide

  Piotr MIECZNIK

  55-68
• Ultrasonic and hypersonic investigations of vibrational relaxation in liquid thiophene

  Piotr MIECZNIK

  273-281
• Optimization of the Morphological Parameters of a Metal Foam for the Highest Sound Absorption Coefficient Using Local Search Algorithm

  Mohammad Javad JAFARI, Ali KHAVANIN, Touraj EBADZADEH, Mahmood FAZLALI, Mohsen Niknam SHARAK, Rohollah Fallah MADVARI

  2020-07-09

  487–497
• Numerical Methodology to Obtain the Sound Absorption of Materials by Inserting the Acoustic Impedance

  Cláudia Ohana BORGES MENDES, Maria Alzira DE ARAÚJO NUNES

  2021-12-10

  649–656
• The influence of acoustic nonlinearity on absorption properties of Helmholtz resonators. Part II. Experiment

  M. MEISSNER

  175-190
• Nonsingular Meshless Method in an Acoustic Indoor Problem

  Adam BRANSKI, Edyta PREDKA

  2017-10-18

  75–82
• Acoustical properties of porous layer – undeformable halfspace system at normal incidence of harmonic wave

  M. CIESZKO

  2014-05-01

  261-276
• Ultrasonic measurements in the 1-(trans-4-hexylcyclohexyl)-4-isothiocyanatobenzene near the nematic-isotropic transition

  A. Balcerzak
• The Effect of Geometrical and Material Modification of Sound Diffusers on Their Acoustic Parameters

  Adam PILCH, Tadeusz KAMISIŃSKI

  955–966
• Optimized sound absorption of a rigid polyurethane foam

  M. A. Ibrahim, R. W. Melik
• Acoustic Absorption of a New Class of Alumina Foams with Various High-Porosity Levels

  Tomasz G. ZIELIŃSKI, Marek POTOCZEK, Romana E. ŚLIWA, Łukasz J. NOWAK

  2013-12-20

  495–502
• Study on Sound Absorption of Road Acoustic Screens Under Simulated Weathering

  Artur NOWOŚWIAT, Jerzy BOCHEN, Leszek DULAK, Rafał ŻUCHOWSKI

  2018-01-24

  323–337
• Multi-Objective Optimization of Acoustical Properties of PU-Bamboo-Chips Foam Composites

  Yang JIANG, Shuming CHEN, Dengfeng WANG, Jing CHEN

  2017-11-13

  707–714
• Sensitivity Analysis of Acoustic Field Parameters on a Change of Boundary Conditions in a Room

  Katarzyna SUDER-DĘBSKA, Ireneusz CZAJKA, Mateusz CZECHOWSKI

  343-350
• A-weighted sound pressure level calculation in the dissipative atmosphere

  Krystyna BEREZOWSKA-APOLINARSKA, Rufin MAKAREWICZ

  145-160
• The effect of rate changes of the constant external magnetic field on the coefficient of ultrasonic wave absorption in polydispersive magnetic fluid

  A. JÓZEFCZAK, A. SKUMIEL, M. ŁABOWSKI

  441-449
• Experimental investigation of CoFe$_2$O$_4$ particle size and acoustic properties of magnetic fluid

  Bartek Zieliński, A. Skumiel, A. Józefczak

  2014-01-01

  165-170
• An Inverse Method to Obtain Porosity, Fibre Diameter and Density of Fibrous Sound Absorbing Materials

  Jesus ALBA, Romina del REY, Jaime RAMIS, Jorge P. ARENAS

  561–574
• Acoustic Absorption of Mortar Composites with Waste Material

  Marco Aurelio STUMPF, Fernanda FLACH, Josiane RESCHKE PIRES, Marlova PIVA KULAKOWSKI

  417–423
• Resonance absorption of ultrasonic waves in a magnetic fluid

  A. SKUMIEL, M. ŁABOWSKI, A. JÓZEFCZAK

  2014-05-09

  195-210
• The influence of acoustic nonlinearity on absorption properties of Helmholtz resonators. Part I. Theory

  M. MEISSNER

  2014-06-30

  179-190
• Identification of Sound Power Levels and Surface Absorption Coefficients in Multi-Source Industrial Buildings by Using a Simplified Diffusion Model

  Martín E. SEQUEIRA, Víctor H. CORTÍNEZ

  2018-01-05

  93–102
• Sound Insulation Properties of Sound-Reduction Louvers with Innovative Devulcanized Rubber

  Tomas VILNIŠKIS, Tomas JANUŠEVIČIUS

  2024-04-05

  359–368
• Calculation of the sound-absorbing panels based on the principle of electroacoustic analogies and considering the rayleigh impedance

  M. LEŚNIAK, A. DRZYMAŁA, S. KLIMCZYK, R. WYRZYKOWSKI

  261-272
• An Influence of the Wall Acoustic Impedance on the Room Acoustics. The Exact Solution

  Adam BRAŃSKI, Anna KOCAN-KRAWCZYK, Edyta PRĘDKA

  2017-10-17

  677–687
• Complexity investigation in solutions of ZnCl2 and LiCI in water using an acoustic method

  Włodzimierz BOCH, Jacek GOC

  73-86
• Absorption of ultrasonic waves in aqueous solutions of α-cyclodextrin with alkylpyridinium or alkyltrimethylammonium bromides

  A. BALCERZAK, R. PŁOWIEC, A. JUSZKIEWICZ

  2014-05-12

  411-428
• Complex investigations of the critical n-amylic alcohol-nitromethane mixture with acousto-optic methods

  Mikołaj ŁABOWSKI, Tomasz HORNOWSKI

  385-412
• Reverberation time of Wrocław Opera House after restoration

  Krzysztof Rudno-Rudziński, P. Dziechciński

  2014-01-01

  247-252
• Determination of the influence of liquid molecule structure on acoustic absorption quantity

  Bogumił LINDE, Marek KOSMOL, Antoni ŚLIWIŃSKI

  353-383
• Combined Evaluation of Room Acoustic Descriptors in Different Structural Configurations via ODEON Simulations and Artificial Neural Networks

  Eriberto Oliveira DO NASCIMENTO, Paulo Henrique Trombetta ZANNIN

  2024-09-26

  543–556
• Nonlinearly coded signals for harmonic imaging

  Andrzej NOWICKI, Janusz WÓJCIK, Tamara KUJAWSKA

  63–74
• Acoustical relaxation in heterocyclic liquids

  Bogumił LINDE

  163-170
• Ultrasonic measurements of aqueous solutions of [ampersand]beta;-cyclodextrin with alkyl pyridinium bromides

  Andrzej BALCERZAK

  627–641
• Analysis of the Room Acoustic with Impedance Boundary Conditions in the Full Range of Acoustic Frequencies

  Edyta PRĘDKA, Adam Jan BRANSKI

  2020-02-12

  85–92
• Numerical analysis of piezoelectric photoacoustic spectra

  M. Maliński
• Ultrasonic investigations of the relaxation processes related to the presence of the group –C = 0/NH in molecules

  Zofia BARTYNOWSKA-MEUS, Adam JUSZKIEWICZ

  113-118
• Propagation of hypersonic waves in some viscous fluids

  Zygmunt KLESZCZEWSKI

  243-253
• The Study of the Influence of the Ceiling Structure on Acoustics in Contemporary Churches

  Anna SYGULSKA

  2019-01-21

  169–184
• Ultra- and hypersonic properties of the critical mixture n - amyl alcohol - nitromethane

  Mikołaj ŁABOWSKI, Tomasz HORNOWSKI

  305-324
• Thermal relaxation processes in some organic liquids

  Zygmunt KLESZCZEWSKI

  43-50
• Acoustic impedance variations of Helmholtz resonators of two plates with orifices inlet neck against the distance between the plates

  M. Birnbach, A. Śliwiński, S. Zachara
• Thermodynamic parameters of an ultrasound relaxation process in 2-Nitrobutanol-1

  Adam JUSZKIEWICZ, Zofia BARTYNOWSKA-MEUS

  363-368