On Mon, Jul 07, 2014 at 09:24:14PM +0200, Jörn Nettingsmeier wrote: > On 07/01/2014 07:05 PM, Marc Lavallée wrote: > > > >Hi Fons. > > > >Tue, 1 Jul 2014 16:45:31 +0000, > >Fons Adriaensen <f...@linuxaudio.org> wrote : > > >>* If your room acoustics are bad, using directional speakers > >> will not necessarily help, they could even make things worse. > >> Unless maybe when you're building a PA system in a sports hall. > > > >What sort of problem would cause a directional speaker in a room? > > since speakers are only directional for higher frequencies > (basically as a function of the radiating waveguide/column length in > terms of wavelengths), a "directional" speaker will cause a muddy or > boomy diffuse field (because it is dominated by the uncontrolled low > frequency). a speaker tailored for wide dispersion will have > proportionally more HF in the diffuse field, which may be more > pleasant in the end. > the overall tone color of a massive multichannel speaker systems in > any reverberant room can easily be dominated by the uncontrolled > "leakage" to the sides. > add to that the fact that it is very easy to control high > frequencies by wall treatment, and prohibitively > complicated/expensive to absorb low frequencies, and directional > speakers are suddenly a lot less desirable than they look on paper > :)
Exactly. Now if you control the room acoustics by HF damping only you're back to the muddy diffuse field. If you include an amount of scattering (i.e. diffusers), this will break up flutter echos while preserving tonal balance. Ciao, -- FA A world of exhaustive, reliable metadata would be an utopia. It's also a pipe-dream, founded on self-delusion, nerd hubris and hysterically inflated market opportunities. (Cory Doctorow) _______________________________________________ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
