SCHEDULE 6 (ANNEX III to the Directive)
PART ABasic Noise Emission Standard
Additional microphone positions on the hemispherical measurement surface (EN ISO 3744:1995)E15
In addition to clauses 7.2.1 and 7.2.2 of EN ISO 3744:1995 a set of 12 microphones on the hemispherical measurement surface may be used. The location of 12 microphone positions distributed on the surface of a hemisphere of radiusr are listed in the form of Cartesian co-ordinates in the following table. The radiusr of the hemisphere shall be equal to or greater than twice the largest dimension of the reference parallelepiped. The reference parallelepiped is defined as the smallest possible rectangular parallelepiped just enclosing the equipment (without attachments) and terminating on the reflecting plane. The radius of the hemisphere shall be rounded to the nearest higher of the following values: 4, 10, 16m.
The number (12) of microphones may be reduced to six, but the microphone positions 2, 4, 6, 8, 10 and 12 following the requirements of clause 7.4.2 of EN ISO 3744:1995 have to be used in any case.
Generally the arrangement with six microphone positions on a hemispherical measurement surface has to be used. If there are other specifications laid down in a noise test code in F1these Regulations for a specific equipment, these specifications shall be used.
Coordinates of the 12 microphone positions
Number of microphone | x/r | y/r | z |
|---|---|---|---|
1 | 1 | 0 | 1.5m |
2 | 0.7 | 0.7 | 1.5m |
3 | 0 | 1 | 1.5m |
4 | -0.7 | 0.7 | 1.5m |
5 | -1 | 0 | 1.5m |
6 | -0.7 | -0.7 | 1.5m |
7 | 0 | -1 | 1.5m |
8 | 0.7 | -0.7 | 1.5m |
9 | 0.65 | 0.27 | 0.71r |
10 | -0.27 | 0.65 | 0.71r |
11 | -0.65 | -0.27 | 0.71r |
12 | 0.27 | -0.65 | 0.71r |
Additional microphone positions on the hemispherical measurement surface (EN ISO 3744:1995)E25
In addition to clauses 7.2.1 and 7.2.2 of EN ISO 3744:1995 a set of 12 microphones on the hemispherical measurement surface may be used. The location of 12 microphone positions distributed on the surface of a hemisphere of radiusr are listed in the form of Cartesian co-ordinates in the following table. The radiusr of the hemisphere shall be equal to or greater than twice the largest dimension of the reference parallelepiped. The reference parallelepiped is defined as the smallest possible rectangular parallelepiped just enclosing the equipment (without attachments) and terminating on the reflecting plane. The radius of the hemisphere shall be rounded to the nearest higher of the following values: 4, 10, 16m.
The number (12) of microphones may be reduced to six, but the microphone positions 2, 4, 6, 8, 10 and 12 following the requirements of clause 7.4.2 of EN ISO 3744:1995 have to be used in any case.
Generally the arrangement with six microphone positions on a hemispherical measurement surface has to be used. If there are other specifications laid down in a noise test code in this Directive for a specific equipment, these specifications shall be used.
Coordinates of the 12 microphone positions
Number of microphone | x/r | y/r | z |
|---|---|---|---|
1 | 1 | 0 | 1.5m |
2 | 0.7 | 0.7 | 1.5m |
3 | 0 | 1 | 1.5m |
4 | -0.7 | 0.7 | 1.5m |
5 | -1 | 0 | 1.5m |
6 | -0.7 | -0.7 | 1.5m |
7 | 0 | -1 | 1.5m |
8 | 0.7 | -0.7 | 1.5m |
9 | 0.65 | 0.27 | 0.71r |
10 | -0.27 | 0.65 | 0.71r |
11 | -0.65 | -0.27 | 0.71r |
12 | 0.27 | -0.65 | 0.71r |