In real world how do you make sense of these sound pressure levels say to determine if an equipment if acceptable eg a fan. I usually get sound power (LWA) from manufacturer and it really does not make sense to me especially when there's no distance specified from the source eg 45dBA at 1m
Given a sound power value, the sound pressure/sound intensity can be determined at given distance from the source as explained in section 3.2 of this article: community.sw.siemens.com/s/article/sound-pressure-sound-power-and-sound-intensity-what-s-the-difference. Sound pressure and sound intensity levels are the same if the sound emitting object is in a free field.
Very good video with very good explanations and examples!!!!
In real world how do you make sense of these sound pressure levels say to determine if an equipment if acceptable eg a fan. I usually get sound power (LWA) from manufacturer and it really does not make sense to me especially when there's no distance specified from the source eg 45dBA at 1m
Given a sound power value, the sound pressure/sound intensity can be determined at given distance from the source as explained in section 3.2 of this article: community.sw.siemens.com/s/article/sound-pressure-sound-power-and-sound-intensity-what-s-the-difference. Sound pressure and sound intensity levels are the same if the sound emitting object is in a free field.