On 08 Jul 2014, at 00:14, Fons Adriaensen <f...@linuxaudio.org> wrote:
> 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. How about using loudspeakers with cardioid characteristic in the bass range? http://www.me-geithain.de/index.php/en/studio/products/active-loudspeaker/rl901k G _______________________________________________ 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.
