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Measurement and possible solutions of the non-uniform sound field in the automotive industry

Citace:
ZUZJAK, L., TUREČEK, O. Measurement and possible solutions of the non-uniform sound field in the automotive industry. In Proceedings of the INTER-NOISE 2016 : 45th International Congress and Exposition on Noise Control Engineering : Towards a Quieter Future. Berlin: German Acoustical Society (DEGA), 2016. s. 399-401. ISBN: 978-3-939296-11-9 , ISSN: 0105-175X
Druh: STAŤ VE SBORNÍKU
Jazyk publikace: eng
Anglický název: Measurement and possible solutions of the non-uniform sound field in the automotive industry
Rok vydání: 2016
Místo konání: Berlin
Název zdroje: German Acoustical Society (DEGA)
Autoři: Ing. Ladislav Zuzjak , Ing. Oldřich Tureček Ph.D. ,
Abstrakt EN: A high-quality car sound system is important for comfoitable listening. At the present, the sound systems in the automotive are realized using multiway loudspeaker systems positioned at different distances of the listening positions. This fferent placement of the loudspeakers causes strong non-uniform frequency distribution of the sound field. The possibility of the placement of the loudspeakers into the optimal position in the car is limited and very often it is not possible. Thus, it is necessary to solve the consequences of the inappropriate position of the loudspeakers on the sound field using sophisticated digital signal processing. In this paper, we focus on the measurement of the distribution of the sound field in various listening positions in the car. Attention is also paid to the compensation of the non-uniforrn sound field. Primarily, these compensations can be performed using the frequency and dynamical corrections. Another ption is to change the delay of the signal for each loudspeaker separately. This topic is very complex because the listening positions are placed in the near field of the multiway loudspeaker systems, where the distances between the loudspeakers are often close to or larger than the distance between the listening position and the loudspeaker.
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