Research Papers
| Probability density distribution of instantaneous values of a speech signal in Polish | |
| Stefan P. Brachmański, Wojciech Majewski | 193-203 |
| Relation of ear protector attenuation to noise spectra and methods for its determination | |
| Danuta Trynkowska, Ryszard Michalski | 205-219 |
| Sound radiation produced by a ship propeller | |
| Eugeniusz Kozaczka | 221-243 |
| Investigation of the acoustic field distribution in piezoelectric transducers by the bragg diffraction method | |
| Zygmunt Kleszczewski | 257-270 |
| Ultrasonic wave propagation along the surface of a rod immersed In a liquid | |
| Leszek Filipczyński | 271-286 |
Review Papers
| Ultrasonic transducers using radial vibrations of a piezoelectric disk | |
| Jerzy Golanowski, Tadeusz Gudra | 245-255 |