Well, I got a good question today from a client having a problem with seaguls: would it be possible to hold the seaguls away by means of sound "uncomfortable" to birds but non-perceivable by humans?
I don't know if seaguls are sensitiv to ultrasound. Does anybody know? Who has a...
Hi,
We're looking for a noise mapping software for noise from traffic, railways and industries. We have to use the nordic calculation method to comply with the authorities. There's only to softwares that calculate with this methode: SoundPlan and CadnaA. Both programs do a lot of thing and it...
Hi guys,
I got to estimate the vibration levels from a train to a appartment building. The building is 4 stories high and standing 20m from the track's center and it's soft ground, clay, between the track and the building. The track is laying on filling, 3m high. The filling is very probably a...
Hi,
I've to evaluate the consequences of a building project to the neiborhood during the construction phase. Does anyone have data on noise from contruction "machines" like trucks, graders, excavators and so on. Any data on noise at a construction field while "everything moves...
Hi,
I'd like to know more about ionisation of dust particles as used in electrostatics filters. I've looked in ASHRAE's system & equipment but didn't find much. Does anyone know where I could get a more thorough and complete information (websites, books)? It's for an industrial application (big...
Hi,
I've got a project that consist in glazing the interior court back an old building. the ting is about 30m long, 20 wide and 6 stories high. Without treatment, the reverberation will be around 10 horrible seconds according to my calculation. i can place som absorbent under the mezzanines but...
Hi,
I'm a consultant in noise&vibration and I've to improve my knowledge in gound vibration. I've some books but I think a course would help much as well. Does anyone know where I could find such a course? A place in Europe would be best since I work in Norway.
Thanks a lot,
OKdB
Hi,
I'm a consultant engineer i acoustics. I've often to predict/determine structurborne noise levels in dwellings/offices based on vibration levels.
Formulas for calculating the radiated sound power relied on the radiating coefficient srad wich has in his turn to be calculate, with more or...
Hi,
I'm a consultant engineer i acoustics. I've often to predict/determine structurborne noise levels in dwellings/offices based on vibration levels.
Formulas for calculating the radiated sound power relied on the radiated coefficient srad wich has in his turn to be calculate, with more or...
