On jeudi 22 janvier 2009, Melchior FRANZ wrote: > * John Denker -- Thursday 22 January 2009: > > On 01/22/2009 06:05 AM, Melchior FRANZ wrote: > > > But it depends on the frequency pattern, no? So we'd need to > > > analyze the spectrum ... time to use libfftw3. > > > > No, the 1/r^2 attenuation is independent of frequency. No FFT > > required. > > The law is the same, but the distances aren't. Lower frequency > travels farther.
Not fully right. Only right when high frequencies are stopped by objects. Low frequencies could go over, and farther The wider and the heavier the objects are, the lower the frequency may only go through. If there is no object between the emissive sound and the recever/listener the full auditive band ( 20/20000 hz) is traveling to the same distance. > I don't think that's irrelevant. An automatic > calculation wouldn't know of which kind the sound is. > > m. > -- Gérard http://pagesperso-orange.fr/GRTux/ J'ai décidé d'être heureux parce que c'est bon pour la santé. Voltaire ------------------------------------------------------------------------------ This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword _______________________________________________ Flightgear-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/flightgear-devel
