And I'm good with this as well. I am interested in DI for the reverberant field. To add early reflections (even if that's what I wanted) would greatly complicate such considerations.
Scenario: A half space baffle sitting on the floor. Midrange significantly independent of the floor, bass significantly coupled to the floor. Premise 1: DI ought to fall with decreasing frequency, 2: DI would increase with the floor added.. I once formulated a conclusion that the floor effect is irrelevant to the above considerations but I forget how I got there, was I wrong?
Scenario: A half space baffle sitting on the floor. Midrange significantly independent of the floor, bass significantly coupled to the floor. Premise 1: DI ought to fall with decreasing frequency, 2: DI would increase with the floor added.. I once formulated a conclusion that the floor effect is irrelevant to the above considerations but I forget how I got there, was I wrong?
By carpet and high ceiling?the vertical reflections should be eliminated by the room.
I have a diffuser on the ceiling and some absorption, but mostly the sound is reflected back towards the speakers. On the floor I have what would be called a huge pillow, about 12" thick to kill the floor bounce. Both are sized to kill the floor and ceiling bounce to the seating locations. Nothing anywhere else.
I hadn't considered a dipole in terms of floor and ceiling reflections.......another bonus, at certain angles.....
Killing or eliminating first reflections is quite a task if taken seriously, unless one has a dedicated hifi room. Attenuation is more realistic goal and we have many effective ways for that, with location of speakers, listener and furniture/carpets etc.
When I started AINOgradient project, I thought that the 12" tilted dipole driver would eliminate floor bounce, which happens around 2-300Hz usually. I guess it helps but it still is remarkable.
I remember reading somewhere that we omnivore bipod humans are evolutionally adapted to ground bounce - we have built-in processing to eq it!
When I started AINOgradient project, I thought that the 12" tilted dipole driver would eliminate floor bounce, which happens around 2-300Hz usually. I guess it helps but it still is remarkable.
I remember reading somewhere that we omnivore bipod humans are evolutionally adapted to ground bounce - we have built-in processing to eq it!
I remember reading somewhere that we omnivore bipod humans are evolutionally adapted to ground bounce - we have built-in processing to eq it!
This seems logical to me, just as it seems logical that our hearing would be predominately aimed at high resolution in the horizontal plane, but sounds from above would have special meaning. Also, the fact that we have terrible hearing ability above about 10 kHz, because in the wild anything higher gets quickly absorbed in the air. No need for capabilities at frequencies that don't exist.
I understand that, but the vertical reflections should be eliminated by the room. One does not want strong absorption on the side walls because lateral reflections yield spaciousness, but vertical ones have no positive attributes. Once they are eliminated then only the horizontal DI matters.
OTOH it's much more practical to eliminate the horizontal first reflections by the room design or even portable deflecting panels
big diffusers on the ceiling or thick absorbers on the floor - not very practical
I don't think the first reflections should be eliminated, perhaps attenuated, but my understanding is that they are needed for spaciousness?OTOH it's much more practical to eliminate the horizontal first reflections by the room design or even portable deflecting panels
I don't think the first reflections should be eliminated
"if" is another question
I think no matter what you try you won't get optimal sound in a room (functional; living room for example), which is seen by the speaker as just another (big) enclosure including all advantages and disadvantages.
I always had the best sound outside, free-field, no reflections.
I always had the best sound outside, free-field, no reflections.
big diffusers on the ceiling or thick absorbers on the floor - not very practical
Worked out fine for me.
What do you mean? The room is the only enclosure in my house 😛.I think no matter what you try you won't get optimal sound in a room (functional; living room for example), which is seen by the speaker as just another (big) enclosure including all advantages and disadvantages.
Oh, and why have a box outside, what is the advantage? 😕
Oh you hear Open Baffle or sth like that?
Well then my wording above is not quite fitting...
Outside, no reflections, no room gain, no standing waves, no pressure chamber effect...
The disadvantage is you will need maybe 3 or 4 times the power for bass freqs.
The weather might come into play also.
Once you add a roof or similar there will be "distortion" again.
Well then my wording above is not quite fitting...
Outside, no reflections, no room gain, no standing waves, no pressure chamber effect...
The disadvantage is you will need maybe 3 or 4 times the power for bass freqs.
The weather might come into play also.
Once you add a roof or similar there will be "distortion" again.
I presumed you meant a box speaker outside, I wondered what advantage that had over an OB outside, serious question.
Wording 😉How could a line array ever have spherical dispersion?
45k-600Hz cylindrical
600Hz - 20Hz spherical
JBL had gotten sound right over 70 years ago YouTube
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I've heard the Paragon several times. It was ahead of its time, but not ahead of where we are today.
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