Open Access
Table 1
Comparison of rubber ball measurement conditions required by various standards and Korean building regulation.
| KS F 2810-2 | Korean building regulation | ISO 16283-2 | |
|---|---|---|---|
| Impact positions | 3–5 positions including the centre point, positions must be at least 0.5 m from the room boundaries. | More than 4 positions including the centre point. | Four or more positions on the floors. |
| Receiving positions | At least 4 evenly spaced measurement points separated from each other by > 0.7 m. Additionally, the points should be separated from the ceiling, surrounding walls, and floor by > 0.5 m. | More than 4 receiving positions including the centre point. | Microphone positions shall be distributed within the maximum permitted space throughout each room. No two microphone positions shall lie in the same plane relative to the room boundaries and the positions shall not be in a regular grid. |
| Minimum distance between microphone | 0.75 m from the walls (0.5 m from the walls if the room area < 14 m2). | 0.7 m between microphones. | |
| 0.5 m between microphone position and the room boundaries. | |||
| Receiving height | 1.2 m from the floor. | 1.0 m between any microphone position and the partition being excited by the impact source. | |
| Definition of the heavy-weight maximum impact sound pressure level in KS F 2810-2 [20] (Korean Engineering method). | |||
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