Vol. 51 No. 2 (2026)

Full Issue

Research Papers

Construction Method of Sparse Dictionary for Multi-Order FRFT Domain Feature Fusion

Tongjing Sun, Lei Chen, Xiaohong Deng

235-247
Few-Shot Transfer for Speech Enhancement Using SEGAN with Stability Guardrails

Rubi Sharma, Firos A.

249-266
Causality- and Passivity-Constrained Nonnegative Attention for Interpretable Structure-Borne Road Noise Prediction in Battery Electric Vehicles

Haijun Wang, Zhijie Huang, Zengjun Lu, Xianghua He, Tie Xu

267-282
A Study of Damage Mode Recognition of Polypropylene Fiber-Reinforced Recycled Aggregate Concrete Based on Principal Components of Acoustic Emission Signals

Qianxu Chen, Xin Yang

283-292
The Mechanism of Formation of the Cutoff Frequency in an Acousto-Optic Delay Line and Some Proposals for its Measurement

Afig Hasanov, Ruslan Hasanov, Elgun Aghayev, Rovshan Ahmadov

293-299
Shaping the Soundscape: Exploring the Influence of Building Layout on Outdoor Acoustic Environments

Sami Hamouta, Atef Ahriz, Noureddine Zemmouri, Ahmed Mansouri

301-316
The Influence of the Surface of Ventilation Duct on Sound Attenuation in the Airflow

Joanna Maria Kopania, Kamil Wójciak, Patryk Gaj, Grzegorz Bogusławski

317-331
Masculinized or Feminized? Discriminant Analysis of Postmenopausal Women’s Voices

Maja Pietras, Łukasz Piotr Pawelec, Monika Krzyżanowska, Anna Lipowicz

333-344
Indian Sign Language Alphabet Recognition and Speech Synthesis Using a Hybrid Deep Learning Approach

Aswani Sivan, Chandra Eswaran

345-358

Technical Notes

Modeling of High-Speed Ultrasonic Testing of Railway Rails in Track Inspection

Sławomir Mackiewicz, Zbigniew Ranachowski, Tomasz Katz, Tomasz Dębowski, Grzegorz Starzyński

359-376
Semi-Supervised Learning for Sediment Classification Using Convolutional Neural Networks with Digital Elevation Model and Backscatter Data

Paweł Nadachowski, Zbigniew Łubniewski, Karolina Trzcińska, Radosław Wróblewski, Maria Rucińska, Jarosław Tęgowski

377-385

OSA 2025

Application of ISO 12913 Standard to Assess Urban Soundscapes: A Case Study on Poznań

Jakub Dumanowski, Anna Preis, Jan Felcyn

387-397
The Impact of Generated and Expressive Modulation of the Synthetic Instrument Sound Parameters on the Impression of Naturalness

Marek Pluta

399-413
Impact of Perforated Sheet Geometry on the Insertion Loss of Absorptive Silencers

Kamil Wójciak, Joanna Maria Kopania, Patryk Gaj

415-426

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