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Reverberation Time Measurement With Composed Audio Test Signal (CROSBI ID 473651)

Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija

Đurek, Ivan ; Maletić, Mladen ; Domitrović, Hrvoje Reverberation Time Measurement With Composed Audio Test Signal // Proc. of Seventh International Congress on Sound and Vibration. Garmisch-Partenkirchen, 2000. str. 1703-1708-x

Podaci o odgovornosti

Đurek, Ivan ; Maletić, Mladen ; Domitrović, Hrvoje

engleski

Reverberation Time Measurement With Composed Audio Test Signal

The composed audio test signal (CATS) is formed by mixing three mutually independent composed sawtooth signals (CSSs), which are a special type of pseudorandom signals. The CATS closely follows the characteristics of natural signals, and its behavior is controlled by the well-defined and configurable parameters. The amplitude probability density function of the CATS follows Gaussian distribution. CATS methods employ efficient cross correlation between input and output to recover the periodic impulse response (PIR) of the system being measured. Since room can be considered as an acoustical transmission system, the impulse response yields a complete description of the sound signal’s changes traveling from one point in room to another. Integrating the square impulse response within specified limits is equivalent to averaging over all possible decay curves which can be obtained at the same place with white noise excitation. Decay curves are based on an exactly reproducible characteristic, namely periodic impulse response. Reverberation time obtained from such curves has greater accuracy than reverberation time obtained in traditional way. This reverberation time measurement method is independent of any accidental circumstances of excitation.

composed audio test signal; pseudorandom; reverberation time

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Podaci o prilogu

1703-1708-x.

2000.

objavljeno

Podaci o matičnoj publikaciji

Proc. of Seventh International Congress on Sound and Vibration

Garmisch-Partenkirchen:

Podaci o skupu

Seventh International Congress on Sound and Vibration

predavanje

04.07.2000-07.07.2000

Garmisch-Partenkirchen, Njemačka

Povezanost rada

Elektrotehnika