Review Papers
| Exploring the Acoustics of Ancient Open-Air Theatres | |
| Sara GIRÓN, Ángel ÁLVAREZ-CORBACHO, Teófilo ZAMARREÑO | 181–208 |
Research Papers
| Direction Estimation and Tracking of Coherent Sources Using a Single Acoustic Vector Sensor | |
| Mohd WAJID, Arun KUMAR, Rajendar BAHL | 209–219 |
| Comparison of Acoustic Emission Data Acquired During Tensile Deformation of Maraging Steel M250 Welded Specimens | |
| Gowri Shankar WURITI, Somnath CHATTOPADHYAYA, Grzegorz KROLCZYK | 221–231 |
| Sound Absorption Characteristics of Pineapple Leaf/Epoxy Composite | |
| Damar Rastri ADHIKA, Iwan PRASETIYO, Abiyoga NOERIMAN, Nurul HIDAYAH, S. WIDAYANI | 233–240 |
| Magnetoacoustic Heating of Plasma Caused by Periodic Magnetosound Perturbations with Discontinuities in a Quasi-Isentropic Magnetic Gas | |
| Anna PERELOMOVA | 241–251 |
| The Primary Noise Control in the Work Environment by Increasing the Quality of Bearings and Effective Mounting of Machines | |
| Stanislav ŽIARAN, Ľubomír ŠOOŠ, Ondrej CHLEBO | 253–262 |
| The Use of the Acoustic Signal to Diagnose Machines Operated Under Variable Load | |
| Paweł PAWLIK | 263–270 |
| Study of Effect of Linear Tip Relief Modification in Power Transmission Efficiency of Spur Gears | |
| Narendiranath Babu THAMBA, Abhijeet Mukund TAMBARE, Krishna Caitanya ANANTHANARAYANAN, Rama Prabha DURAISWAMY, Shankar THANGAVELU, Raj Kumar EASWARA PILLAI, Ramalinga Viswanathan MANGALARAJA | 271–282 |
| Enhancement in Bearing Fault Classification Parameters Using Gaussian Mixture Models and Mel Frequency Cepstral Coefficients Features | |
| Youcef ATMANI, Said RECHAK, Ammar MESLOUB, Larbi HEMMOUCHE | 283–295 |
| A Prognostic Approach to the Resonance Failure Problem by Triple Sensing Technology | |
| Salih Seçkin EROL | 297–301 |
| Modeling and Predicting the Changes in Hearing Loss of Workers with the Use of a Neural Network Data Mining Algorithm: A Field Study | |
| Sajad ZARE, Mohammad Reza GHOTBIRAVANDI, Hossein ELAHISHIRVAN, Mostafa Ghazizadeh AHSAEED, Mina ROSTAMI, Reza ESMAEILI | 303–311 |
| Brain’s Frequency Following Responses to Low-Frequency and Infrasound | |
| Carlos JURADO, Torsten MARQUARDT | 313–319 |
| On the Consumption of Multimedia Content Using Mobile Devices: a Year to Year User Case Study | |
| Przemyslaw FALKOWSKI-GILSKI | 321–328 |
| Analysis for Improvement of Doppler Tomography Imaging of Objects Scattering Continuous Ultrasonic Waves | |
| Tomasz ŚWIETLIK, Krzysztof J. OPIELINSKI | 329–339 |
| The Single Degree of Freedom Simulation Model of Underwater Explosion Impact | |
| Andrzej GRZĄDZIELA, Agata ZAŁĘSKA-FORNAL, Marcin KLUCZYK | 341–348 |
| Underwater Noises of Open-Circuit Scuba Diver | |
| Vladimir KORENBAUM, Anatoly KOSTIV, Sergey GOROVOY, Veniamin DOROZHKO, Anton SHIRYAEV | 349–357 |
Technical Notes
| Experimental Study on the Half Flat Tip Serrated Trailing Edge for Stand Fan | |
| Hsiao Mun LEE, Kian Meng LIM, Jinlong XIE, Heow Pueh LEE | 359–365 |
Chronicle
| 49th Winter School on Wave and Quantum Acoustics XLVIIIth Winter School on Environmental Acoustics and Vibroacoustics Szczyrk, Poland, February 24–27, 2020 | |
| Dariusz Bismor | 367–374 |



