Results 41 to 50 of about 8,522 (72)

Modeling of Acoustic Coupling of Ultrasonic Probes for High-Speed Rail Track Inspection

open access: yesArchives of Acoustics
The paper presents the modeling of transmission of the ultrasonic plane wave through an uniform liquid layer. The considered sources of the ultrasonic wave were normal (straight) beam longitudinal wave probes and angle beam sheer waves probes commonly ...
Sławomir MACKIEWICZ   +5 more
doaj   +1 more source

Vibroacoustic Real Time Fuel Classification in Diesel Engine

open access: yesArchives of Acoustics, 2018
Five models and methodology are discussed in this paper for constructing classifiers capable of recognizing in real time the type of fuel injected into a diesel engine cylinder to accuracy acceptable in practical technical applications.
Andrzej BĄKOWSKI   +3 more
doaj   +1 more source

DAB vs DAB+ Radio Broadcasting: a Subjective Comparative Study

open access: yesArchives of Acoustics, 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 ...
Przemyslaw GILSKI
doaj   +1 more source

Single Vector Hydrophone DOA Estimation: Leveraging Deep Learning with CNN-CBAM

open access: yesArchives of Acoustics
In recent years, single vector hydrophones have attracted widespread attention in target direction estimation due to their compact design and advantages in complex underwater acoustic environments.
Fanyu ZENG   +4 more
doaj   +1 more source

Speech Enhancement Using Sliding Window Empirical Mode Decomposition and Hurst-based Technique

open access: yesArchives of Acoustics, 2019
The most challenging in speech enhancement technique is tracking non-stationary noises for long speech segments and low Signal-to-Noise Ratio (SNR).
Selvaraj POOVARASAN, Eswaran CHANDRA
doaj   +1 more source

Effects of Ultrasonic Power and Intensity of Mechanical Agitation on Pretreatment of a Gold-Bearing Arsenopyrite

open access: yesArchives of Acoustics
In this paper, the effects of an ultrasonic power and the intensity of mechanical agitation for pulp on alkaline pretreatment of gold-bearing arsenopyrite were investigated.
Won Chol HONG   +3 more
doaj   +1 more source

Experimental and Computational Analysis on the Acoustic Performanceof Side Outlet Muffler with Semi-Circular Baffles

open access: yesArchives of Acoustics
In this study, the impacts of the inclusion of two semi-circular baffles and their orientations on the acoustic performance of the side outlet muffler have been investigated.
Sandeep Kumar VISHWAKARMA   +1 more
doaj   +1 more source

Influence of Ultrasonic Cavitation on Botryococcus Braunii Growth

open access: yesArchives of Acoustics
This study investigates ultrasonic energy’s impact on enhancing the growth of Botryococcus braunii (B. braunii) microalgae. Microalgae, known for their advantages in greenhouse gas mitigation and biomass conversion, were subjected to various stressors ...
Asleena SALAEH
doaj   +1 more source

Listening Effort in Reverberant Rooms: A Comparative Study of Subjective Perception and Objective Acoustic Metrics

open access: yesArchives of Acoustics
Modern room acoustics employs a variety of objective measures to characterize the acoustical properties of interiors. Despite these advancements, the relationship between these parameters and subjective assessments of room acoustics remains unclear ...
Anna PASTUSIAK   +2 more
doaj   +1 more source

Sound Source Localisation in Digital Hearing Aids: A Review of Critical Factors

open access: yesArchives of Acoustics
Sound source localisation is a fundamental ability for a listener’s functional interaction with the environment, yet it remains a significant challenge for hearing aid users.
Fermín SCALITI   +2 more
doaj   +1 more source

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