Did anyone use software like this? (sound transmission calc)

I just know this one, but maybe there are more software products like this. BASTIAN for calculation of airborne and impact sound transmission english deutsch Does somebody has access to such a software? regards Andy

what are you asking? If I have used such software? (no I didn't) or Do I HAVE such software (to give it to you)... no

Ro wrote:

what are you asking? If I have used such software? (no I didn't) or Do I HAVE such software (to give it to you)... no

You are totally right. It sounds like I'm asking for the software. Maybe it was an Freudian slip :lol: I'm just interested in some opinions. Such software for building acoustics are made for the standard architect or engineer interested in standard sound behaviour in a standard flat or traffic noise transmission. I wonder whether it is used for calculating studio behavior too.

andymel wrote:

I wonder whether it is used for calculating studio behavior too.

It doesn't matter what one uses this software for. Such software calculates values either per octave, or per 1/3 octave. The difference between whatever purpose is in using a suitable weighting curve, representing the typical spectral composition of the sound source. The software is mainly a calculator for the physics (per octave of 1/3 octave band), the rest is simple stuff (calculating already known TL values per band in function of single number ratings as per standards or specific custom spectra) However this is more complicated than it seems. There are lots of models and comparative investigations show that different models can be more accurate in one case and others in other cases. Such articles are typically in Pro Journals (as JASA or Acoustica or .....) and are rarely free on the net (Copyright protected, but you can, if recent enough, buy them on-line) This is not typically free software (from a DIY point of view even rather expensive). One is for example: http://www.insul.co.nz/ And the EN 12354 standard gives a standardized calculation method including flanking effects. (EN stands for European Norm). Several organizations have transformed this standard in commercial software as well. Your example BASTIAN is only one of them (also based on this standard). http://www.google.com/url?sa=t&source=w ... a8u4M63X3w Such standards aren't on the net either (this one is thick as a book and expensive).

Hi Eric, thanks alot for your answer!! As I am student, I have access to most of that pro journals and I use it alot. Especially at the moment (for the room design and my diploma thesis (Auralization)). But also those papers are related to industrial buildings or dwellings. Needless to say that the knowledge about weakenings of simulations or standards exists, but it seems to me, that because of the difficulties at lower frequencies (expensive insulation, lack of diffus soundfield) the values are normally not usable for resonably precise prediction of airborn sound at low frequency. But I'm not totally informed of this particular subject. Thats why I'm asking were I guess to find the most people thinking about transmission loss between studio and neighbourhood ;)