Microphone positions. The distance from the microphone positions on the microphone line PP’ to the perpendicular reference line CC’ as specified in Figure 1 on the test track or in an indoor test facility shall be 2,0 m ± 0,05 m. The microphones shall be located 1,2 m ± 0,02 m above the ground level. The reference direction for free field conditions as specified in IEC 61672-1.2013 shall be horizontal and directed perpendicularly towards the path of the vehicle line CC’.
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Microphone positions. The distance from the microphone positions on the microphone line PP’ to the perpendicular reference line CC’ as specified in Figure 1 on the test track or in an indoor test facility shall be 2,0 m ± 0,05 m. The microphones shall be located 1,2 m ± 0,02 m above the ground level. The reference direction for free field conditions as specified in IEC 61672-1.2013 1 shall be horizontal and directed perpendicularly towards the path of the vehicle line CC’.
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Samples: wiki.unece.org, wiki.unece.org, wiki.unece.org
Microphone positions. The distance from the microphone positions on the microphone line PP’ to the perpendicular reference line CC’ as specified in Figure 1 on the test track or in an indoor test facility shall be 2,0 m ± 0,05 m. The microphones shall be located 1,2 m ± 0,02 m above the ground level. The reference direction for free field conditions as specified in IEC 61672-1.2013 1:2013 shall be horizontal and directed perpendicularly towards the path of the vehicle line CC’.
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