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http://dx.doi.org/10.7776/ASK.2021.40.3.241

Introduction of a recent active loudspeaker measurement and assessment method based on IEC60268-21  

LEE, Sinlyul (Sonicast Co., Ltd.)
Publication Information
The Journal of the Acoustical Society of Korea / v.40, no.3, 2021 , pp. 241-246 More about this Journal
Abstract
Modern loudspeaker systems are changing an active loudspeaker system that have multiple input channels and power amplifier. So, we cannot measure these active loudspeakers with IEC 60268-5 standard. This paper introduces an IEC 60268-21 standard that can measure an active loudspeaker having many analog and digital and wireless or wired inputs and having various control parameters.
Keywords
Active loudspeaker system; Maximum Sound Pressure Level (SPLmax); Multi-tone; In-situ measurement; Amplitude compression; Total Harmonic Distortion (THD);
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  • Reference
1 IEC 60268-5, Sound System Equipment - Part 5: Loudspeakers. 2010.
2 IEC 60268-1, Sound System Equipment - Part 1: General, 2015.
3 W. Klippel and C. Bellmann, "Holographic nearfield measurement of loudspeaker directivity," Proc. 141st AES. 1-13 (2016).
4 W. Klippel, "Equivalent input distortion," J. Audio Eng. Soc. 52, 931-947 (2016).