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Razvoj programske opreme za večkanalno merjenje odmevnih časov namenjene določevanju koeficienta absorpcije akustičnih materialov.
ID Hvastja, Andrej (Author), ID Prezelj, Jurij (Mentor) More about this mentor... This link opens in a new window

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Abstract
Ta študija predstavlja razvoj in validacijo nove programske opreme, ki omogoča hitro, zanesljivo in sočasno izvajanje meritev odmevnega časa T60 na večkanalnih sistemih. Zasnova programske opreme omogoča enostavno prilagajanje merilnih parametrov odmevnega časa, pri tem pa skrajšuje skupni potrebni čas določanja koeficienta absorpcije vzorcev. Določanje koeficienta absorpcije vzorcev temelji na izmerjenih odmevnih časih. Uporaba nove programske opreme v primerjavi s klasično metodo omogoča, da je v enakem časovnem obdobju izvedeno večje število meritev in posledično izboljšana verodostojnost izmerjenih akustičnih materialnih lastnosti vzorcev. Programska oprema pospešuje izvajanje meritev odmevnega časa do mere, ki omogoča kvalitativno določanje prametrov meritev koeficienta odmevnega časa, ki je do sedaj temeljilo na subjektivnih izkušnjah strokovnjakov. Rezultati študije kažejo na velik potencial programske opreme za izboljšanje učinkovitosti meritev absorpcijskih koeficientov zvoka na vzorcih velikosti med 0,36 m2 in 0,64 m2, kar omogoča njeno uporabo pri razvoju novih akustičnih materialov.

Language:Slovenian
Keywords:večkanalno merjenje, odmevni časi, koeficient absorpcije, akustični materiali, alfa komora, odmevnica
Work type:Master's thesis/paper
Typology:2.09 - Master's Thesis
Organization:FS - Faculty of Mechanical Engineering
Place of publishing:Ljubljana
Publisher:[A. Hvastja]
Year:2023
Number of pages:XXIV, 92 str.
PID:20.500.12556/RUL-148471 This link opens in a new window
UDC:004.415.2:534.6(043.2)
COBISS.SI-ID:164938243 This link opens in a new window
Publication date in RUL:24.08.2023
Views:915
Downloads:73
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Secondary language

Language:English
Title:Development of software for multichannel measurement of reverberation times aimed at determining the absorption coefficient of acoustic materials.
Abstract:
This study presents the development and validation of a new software that enables quick, reliable, and simultaneous measurement of reverberation time T60 in multichannel systems. The software's design allows for the easy adjustment of reverberation time measurement parameters, shortening the overall time required for determining sample absorption coefficients. Determining these coefficients is based on the measured reverberation times. Compared to the traditional method, the use of this new software allows for a greater number of measurements to be conducted within the same time period, thus enhancing the credibility of the measured acoustic material properties of the samples. The software accelerates the execution of reverberation time measurements to a degree that allows for the qualitative determination of reverberation time measurement parameters, which until now were based on the subjective experiences of experts. The study's results indicate the software's significant potential for improving the efficiency of sound absorption coefficient measurements on samples sized between 0.36 m2 and 0.64 m2, facilitating its use in the development of new acoustic materials.

Keywords:multichannel measurement, reverberation times, absorption coefficient, acoustic materials, alpha chamber, reverberation chamber

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