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Št. zadetkov: 5
Microphone array based automated environmental noise measurement system
Jure Murovec, Jurij Prezelj, Luka Curovic, Tadej Novaković
Izvirni znanstveni članek
Oznake: beamforming;horizontal microphone array;immission directivity;noise source classification;spatial filtering;
State of the art environmental noise monitoring systems are based on digital signal processing. In general, they measure and store environmental noise levels, but also perform computation, spectral filtering, narrow band spectral analysis, evaluation of statistical indices, wave recordings, detectio ...
Leto: 2018 Vir: Fakulteta za strojništvo (UL FS)
ǂA ǂnovel approach to localization of environmental noise sources
Jurij Prezelj, Luka Curovic, Tadej Novaković, Jure Murovec
Izvirni znanstveni članek
Oznake: immission directivity pattern;immission vector;sub-windowing;microphone arrays;correlation based beamforming;sub-windowing differential beamforming algorithm;
This article brings a breakthrough in understanding the computation of direction of arrival (DOA) of sound waves and represents an important step in the further introduction of spatial domain into environmental noise and acoustics measurements in general. Instead of improving the accuracy of beamfor ...
Leto: 2022 Vir: Fakulteta za strojništvo (UL FS)
Impact of geometric modifications of small axial fans on psychoacoustic metrics
Tadej Novaković, Luka Curovic, Marko Hočevar, Jurij Prezelj
Izvirni znanstveni članek
Oznake: aksialni ventilatorji;geometrijske modifikacije lopatic;psihoakustične značilke;zvočna moč;aerodinamična karakteristika;axial fans;geometric modifications of blades;psychoacoustic metrics;sound power;aerodynamic performance;
This paper presents a comprehensive experimental investigation of a basic axial fan and its various modifications. The fan blades were designed according to recommendations from the literature. The prototypes were 3D printed and tested under different operating conditions in accordance with the ISO ...
Leto: 2024 Vir: Fakulteta za strojništvo (UL FS)
Experimental characterization of a household heat pump tumble dryer noise
Luka Curovic, Tadej Novaković, Pero Gatarić, Jure Murovec, Jurij Prezelj
Izvirni znanstveni članek
Oznake: heat pumps;tumble dryers;noise source identification;sound power level reduction;
In this paper, an experimental approach for acoustic characterization of a household heat pump tumble dryer is developed. The main noise sources including BLDC motor, centrifugal fan, drain pump, and ventilation duct were identified using an acoustic camera survey based on beamforming, sound pressur ...
Leto: 2022 Vir: Fakulteta za strojništvo (UL FS)
ǂAn ǂenergy-efficient vacuum system as an alternative to the inefficient use of compressed air for the yarn suction gun
Jurij Prezelj, Tadej Novaković, Luka Curovic, Anže Železnik, Jure Murovec
Izvirni znanstveni članek
Oznake: vakuumsko sesanje;nadzvočno polnjenje vakuuma;energijski izkoristek;pištola za sesanje filamentov;vacuum suction;supersonic vacuum flow;energy efficiency;yarn suction gun;
The yarn suction gun (YSG) is used to draw the running yarn in the initial phase and when changing the bobbin in a continuous yarn production and is usually operated with compressed air. With a typical overall efficiency of compressed air generation, treatment and delivery, the electrical power requ ...
Leto: 2024 Vir: Fakulteta za strojništvo (UL FS)
Št. zadetkov: 5
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