Autors: PleshkovaBekiarska, S. G., Filipov, S. J.
Keywords: acoustic measurement, open acoustic space, impulse response, reverberation time, acoustic ambience, test signals, periodic noise, swept-sine, MLS

Abstract: A test measurement signals are used to examine the acoustic ambience in open acoustic spaces where combined noise sources exist. Using different test signals and approaches we can measure the reverberation time in any premises. These test signals can be different type and we will observe which signal is the most suitable for exact room. Early acoustic measurement was made by complicated and heavy tube equipment which not always gives the proper results. Also the measurement microphones were not so sensitive for small acoustic fluctuations and artifacts. Generally one modern acoustic measurement system is built up from isotropic sound source called dodecahedron, music interface, measurement amplifier, Omni microphone and acoustic software. However, using this set up we can measure reverberation time and other acoustic parameters via test signals like periodic or white noise, sweep signal and maximum length sequence - MLS.


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Communications, Electromagnetics and Medical Applications (CEMA’16), pp. 66-76, 2016, Greece, ISBN ISSN 1314-2100

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