Št. zadetkov: 8
Magistrsko delo
Oznake:
biofizika;deoksiribonukleinska kislina;elastične deformacije;sledenje svetlobnim žarkom;računalniško programiranje;računalniška grafika;
Konformacije DNA skozi ray tracing
Leto:
2015
Vir:
Fakulteta za matematiko in fiziko (UL FMF)
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)
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)
Izvirni znanstveni članek
Oznake:
usmerjenost imisije;prostorsko filtriranje;klasifikacija virov hrupa;hrup v okolju;mikrofonske antene;avtomatizacija meritev;immission directivity;spatial filtering;noise source classification;environmental noise;microphone arrays;automatization of measurements;
Noise pollution is one of the major health risks in urban life. The approach to measurement and identification of noise sources needs to be improved and enhanced to reduce high costs. Long measurement times and the need for expensive equipment and trained personnel must be automated. Simplifying the ...
Leto:
2023
Vir:
Fakulteta za strojništvo (UL FS)
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)
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)
Izvirni znanstveni članek
Oznake:
transmission loss;impedance tube;pulse separation;wave decomposition;deconvolution;granular materials;
A simplified method for measuring transmission loss with a single fixed microphone inside an impedance tube is proposed. The separation of the incident wave from the reflected wave is achieved by deconvolving the loudspeaker driver voltage signal with the microphone signal to extract the impulse res ...
Leto:
2023
Vir:
Fakulteta za strojništvo (UL FS)
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)