Zobrazeno 1 - 10
of 19
pro vyhledávání: '"John Lo Verde"'
Autor:
Wayland Dong, John Lo Verde
Publikováno v:
The Journal of the Acoustical Society of America. 153:A21-A21
Airborne sound isolation measurement per ASTM E336 uses random noise excitation generated by loudspeakers in the source room. For smaller rooms such as those in residences, loudspeakers are typically located in and pointed into a corner. There is som
Publikováno v:
The Journal of the Acoustical Society of America. 153:A21-A21
The impact performance of a floor-ceiling assembly is calculated as a single number rating using the ASTM standard. The radiated SPL in the receiving room below is measured, either at discrete points or by scanning in parts of the room, and compared
Publikováno v:
The Journal of the Acoustical Society of America. 153:A183-A183
ASTM standards are used to calculate a single number performance rating for floor-ceiling assembly impact noise. A higher number represents better performance, and a lower number represents poor performance. This number is calculated by placing a sta
Publikováno v:
The Journal of the Acoustical Society of America. 153:A151-A151
The duration of a noise measurement period that is required to establish an ambient or background noise level can vary drastically, from minutes to years. The descriptor of ambient noise levels can also vary whether it is a time-average sound level (
Publikováno v:
The Journal of the Acoustical Society of America. 153:A22-A22
Vehicular traffic noise for free-flowing roadways and highways generally follows statistically predictable flow rates and vehicular mix. The authors’ earlier work in this area examined long-term variations in traffic noise level with the purpose of
Publikováno v:
The Journal of the Acoustical Society of America. 152:A66-A66
Impact noise insulation has traditionally been thought of mostly in terms of vertical adjacencies, and ASTM E1007 provides no guidance for performing such a measurement in a lateral, diagonal, or other non-vertical condition. Because lateral impact t
Publikováno v:
The Journal of the Acoustical Society of America. 152:A65-A65
Impact noise insulation has traditionally been thought of mostly in terms of vertical adjacencies. However, impact noise is transmitted in all directions though a building, and lateral and diagonally adjacent impact noise transmission can be signific
Publikováno v:
The Journal of the Acoustical Society of America. 152:A66-A66
The 2021 International Building Code (IBC) includes pressure-based metrics as the field acoustical standards for conformance. These include normalized noise isolation class (NNIC) and normalized impact sound rating (NISR) (ASTM E336-20 and ASTM E1007
Publikováno v:
The Journal of the Acoustical Society of America. 150:A118-A119
Publikováno v:
The Journal of the Acoustical Society of America. 151:A34-A34
The International Building Code (IBC) establishes minimum acoustical performance requirements for permanent and transient housing facilities. The lab parameters for acoustical performance within the IBC are useful during the design and permitting pro