Wyniki wyszukiwania - BazTech

Ograniczanie wyników

1 Machine Dynamics Research

1 2018

Znaleziono wyników: 1

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: sub-system of batch processing

Sortuj według:

Ogranicz wyniki do:

Comparison of Methods for Measuring Reverberation Time

Melnyk M., Kernytskyy A., Lobur M.

Machine Dynamics Research

2018

Vol. 42, No. 2

27--34

The article presents the results of an experimental evaluation of the reverberation time of the lecture auditorium in the Lviv Polytechnic National University. For their further analysis, a sub-system of batch processing of audio ﬁles with a registered response of the room for excited impulse noise has been developed. To determine the bypass signal, Schroeder method was used, and the least squares method was improved by pre-processing of the signal using the MM method. The inﬂuence of the number of neighboring points of the MM method on the accuracy of the reverberation time by the least squares method is investigated. A comparison of the Schroeder method and the least squares method is made, which makes it possible to establish that Schroeder method is more precise. The average error of this method for 6 experiments against the Dirac system was 0.02 sec, whereas for the least squares method it was 0.06 seconds. The developed subsystem of the batch analysis of the registered response of the premises for pulsed noise makes it possible to increase the speed and efﬁciency of processing the results of experiments.