Naslov
Loudspeaker Equalization in Real-Life Multichannel Environments

Autori
Kudrna, Nikola ; Jambrošić, Kristian ; Planinec, Vedran

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
The 9th Congress of the Alps Adria Acoustics Association – Conference Proceedings / Mesterházy, Beáta ; Márkus, Miklós - Budimpešta : Optikai, Akusztikai, Film- és Színháztechnikai Tudományos Egyesület (OPAKFI), 2021, 181-190

ISBN
978-963-8241-74-0

Skup
9th Congress of the Alps Adria Acoustic Association

Mjesto i datum
Budimpešta, Mađarska, 23.10.2021. - 24.10.2021

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
equalization ; multi-channel audio systemsm ; FIR filters ; impulse response

Sažetak
Most audio reproduction systems are based on a number of loudspeakers that have to be placed on certain pre-defined positions in space around the listener(s). The basic assumption is that all loudspeakers have the same sensitivity, same directivity, a flat amplitude, and a linear phase frequency response. Usually, this assumption is mostly satisfied and in the standard stereo loudspeaker arrangement, there are often no sound field artefacts that can be connected to the non- linearity of the two loudspeakers. In systems with an increasing number of loudspeakers, such as surround stereophonic systems, Ambisonics or WFS, one must take more care in checking these assumptions. In this paper, methods of loudspeaker equalization are discussed and an equalization algorithm using FIR filters is developed and tested on a real-life reproduction system that takes into account not only non-linearities of the loudspeakers alone, but also the influence of the acoustics of the listening room. Finally, a subjective evaluation of the change in quality of the equalized system is discussed.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

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