Mithra vs Cadna

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Jacinto Redondo - 17 Jan 2004 09:30 GMT

I am going to buy a program to simulate acoustic events in external sites.
Who is the best program between Mithra and Cadna?
Distributor tell me Cadna is more modern and allow updating.
I want simulate roads, railways, airports, industries, and cities.
Someone can help me?
Thanks

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Kari Pesonen - 17 Jan 2004 12:11 GMT

> I am going to buy a program to simulate acoustic events in external sites.
> Who is the best program between Mithra and Cadna?
> Distributor tell me Cadna is more modern and allow updating.
> I want simulate roads, railways, airports, industries, and cities.
> Someone can help me?
> Thanks

There are many other similar programs/software packages, too.
Nearly all include one or several national road and rail traffic noise
models, as well as industrial noise model(s), but not air traffic noise
model(s).

Stapelfeldt's Lima: www.stapelfeldt.de
Wölfel's Immi: http://www.woelfel.de/wms/noise/index.htm
Braunstein & Berndt's Soundplan: http://www.soundplan.com/introsp.htm
Bruel & Kjaer's Predictor: http://www.bksv.com/bksv/
DGMR's Geonoise: www.dgmr.nl
TNO's Urbis: www.tno.nl
RIVM's EMPARA http://www.rivm.nl/
dirActivity's Winhavik: http://www.diractivity.nl

and the two you mentioned:
Cadna: www.datakustik.de
Mithra: www.01db-stell.com

Concerning air traffic noise prediction, EU countries should move
to ECAC's methods.
- - -

If the Hormonoise project http://www.harmonoise.nl/ will succeed,
we most probably have in future only common harmonized prediction
methods (but several? software vendors) in EU countries.
Most probably the development will be similar that has happened
in Computer Aided Design software business. Only some of the
biggest/strongest vendors will remain in markets.

with kind regards

Kari Pesonen

PS. My list above should not be considered a complete one, or as
a recommendation. The order randomly selected from my archives.

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Alain Bradette - 22 Jan 2004 09:32 GMT

> > I am going to buy a program to simulate acoustic events in external sites.
> > Who is the best program between Mithra and Cadna?
[quoted text clipped - 38 lines]
> PS. My list above should not be considered a complete one, or as
> a recommendation. The order randomly selected from my archives.

Hello,

There's many softwares available as Kari mentionned. The 2 biggest
softwares er CadnaA and SoundPlan, as far as I know. We've just bought
CadnaA last autumn and we're very satisfied, especially because it's
really user friendly. I've already used SoundPlan a couple years ago
and it was difficult to use. Even SoundPlan themselve admits that
CadnaA is easier to use. Anyway, I'm not trying to sell you any
software. I suggest that you download demo version of a couple of
programs and make your own "road tests".

Grossly, all the softwares do the same thing but look in details like
which drawing format it can open, whether it can use the calculation
method in use in your country and if you have a vendor close to you
(always a advantage when you need technical support/training).

Keep also in mind what are your needs today and what they will be
later. As Kari said, probably only the biggest will survive, so I'll
stick to them.

At last, I strongly suggest that you take a training course to get
started, not only to get quicker used to the software but also in
order to get known with the way the software calculate. Exemple:
SoundPlan calculates reflection backwards, from the immision point to
the source. That means that you need to set up enough reflection
orders or else the reflection contribution won't be included in the
results.

it worth spending some time to thoroughly examine the softwares before
you buy anything!

Alain Bradette

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Avelino López - 26 Jan 2004 11:37 GMT

I am a Cadna A user for one an half year and i agree with Alain point of
view. Here in Spain some administration officers confuse Mithra with
calculation procedure NMPB, when Mithra is one of possible programs in the
market to make this calculation. This could be the reason why the
distributor is telling to Jacinto such things. As Alain says it is not only
question if it is more modern or not, there are many other things.
Avelino Lopez

> > > I am going to buy a program to simulate acoustic events in external sites.
> > > Who is the best program between Mithra and Cadna?
[quoted text clipped - 71 lines]
>
> Alain Bradette

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Natural Science Forum / Physics / Acoustics / January 2004

Mithra vs Cadna