ISO/TC 43/SC 2
| Project No. | ISO 140-9:1985 |
|---|---|
| Title | <p>Specifies a method for measuring a quantity called the suspended ceiling normalized level difference when the sound transmitted by paths other than the required paths is negligible.</p> |
| Registration number (WIID) | 3965 |
| Scope | <p>Specifies a method for measuring a quantity called the suspended ceiling normalized level difference when the sound transmitted by paths other than the required paths is negligible.</p> |
| Status | Atcelts |
| ICS group | 91.060.30 91.120.20 |