[LAD] sound dissipation in air - formulas and filters? (Maitland)

Jörn Nettingsmeier nettings at folkwang-hochschule.de
Sun Feb 1 11:16:22 UTC 2009

Maitland Vaughan-Turner wrote:
> J?rn Nettingsmeier <nettings at folkwang-hochschule.de> sez:
>> true, for this particular case it would do (and that's what i'm using
>> atm). but i have this idea for a plugin that takes actual mic distance,
>> temperature, humidity and desired distance as parameters and will do
>> something that is reasonably correct (not taking into account sound
>> diffraction or reflection at temperature boundary layers, obviously).
>> would be kind of cool, but i need to get a deeper understanding of the
>> physics involved... especially the dependance on humidity is a very
>> tricky and quite non-linear issue.
>> fons is probably right that it doesn't make all that much of a
>> difference, but since such a plugin could be a nice learning tool for
>> sound engineers, i'd want it to be as precise as reasonably possible.
> This sounds like a really interesting project to me, and I wish you
> all the best in completing it!  Aside from being a nice learning tool,
> I'm sure it will be a *very* nice creative tool, as well.
> I can't wait to hear what it sounds like to modulate humidity with a sine wave!

:-D the effect will be very subtle indeed. gives a whole new ring to the
term "vaporware".

while we're at it, the in and out ports should probably simulate
corrosion after prolonged exposure to humidities > .8 ... patches welcome.

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