What is "Sound Stage?"

And that's correct for a multi-driver speaker with tweeters on top, midrange drivers in the middle and bass driver at the bottom. You're hearing the height of the drivers producing frequencies that are in their respective ranges. The cymbals are primarily produced by the tweeters, so their height will be that of the tweeters, etc. It has nothing to do with the recording.

--Bill

Leaving the current argument aside, if the image height in your system is described by the vertical height of the drivers you are way behind the current imaging ability of even modestly priced high-end speakers.
 
D'Appolito configuration: tweeter between the two mid/woofer drivers.

Is that the manufacturer's description of them? Is the mid/woof one unit or two (each)?

--Bill

No Bill, it is my own description.
And furthermore, the three drivers are slightly off axis from the front baffle;
on the inside of it instead of being centered.

The mid/woofers are one single driver; total of three drivers (including the tweeter) per each loudspeaker.

I can describe exactly what Image, the Canadian manufacturer, is saying from their advertising brochure if you want to, but it is simply that; publicity.

They were designed by Ian Paisley, a Canadian speaker designer (for Image, Mirage, Energy, ...), with the help of the NRC facilities, in Ontario, Canada. And at the time that Dr. Floyd O'toole was also working in Canada and also using those facilities. He might even have contributed to the design of the anechoic chamber, not sure though.

* The tweeter (SHD) is described as a Super Hyperbolic Dome (a soft dome tweeter) with a multi-coated shaped dome. Durable cotton fibres are butyl damped and the dome itself has a special termination that lower resonance better than any usual method of formation. The Circular Suspension Roll feature allows for maximum decoupling of the entire dome. That tweeter crosses over to the woofers at 2000Hz.

The Mid/Bass driver is a trilaminate filled polypropylene cone with a unique pebbling feature that makes for higher rigidity. And inert Damping Surround is stitched around the cone reducing break-up modes that cause musical coloration.


The crossover is computer-optimized for accurate phase response and imaging.

The measurements of the Frequency Response are quite smooth; 150Hz to 20kHz +/-2dB.
And with excellent off axis dispersion from the measurements.

See, mostly all hyperbole from the manufacturer and reviewer's measurements.
But I bought them mainly for the excellent percussions reproduction, and the good punchy low bass (I luv organs; the instruments).
 
What kind of noise are you talking about, Roger? Is it the 'unheard' noise that might exist from EMI or RFI on a cable affecting the downstream electronics, or conventional audible noise?

If the latter, the venue (original recording) will almost always have the most noise (more than a typical well designed playback system). So I'm not really sure what you're trying to accomplish. Live attendance at most venues will have a much higher and omni-directional noise component than any recording, but it's being ignored (mostly) by the ear/brain connection and by the high SNR ratio. Not so easy to do in a stereo recording replica of the original performance.

Studio sessions may have lower noise, or more, depending on the instruments used, amount of processing and all that sort of thing. It may not be directly audible, though, since it would be mostly behind the music, and reduced as the music level lowers.

--Bill

Space and time,pretty spectacular
 
Leaving the current argument aside, if the image height in your system is described by the vertical height of the drivers you are way behind the current imaging ability of even modestly priced high-end speakers.
A very unlikely statement.

I have listened to a number of very high end speakers/systems and have never heard height that was not an artifact of driver placement, or of intentional design (to direct certain frequencies differently than others to create/enhance a height illusion. Whatever it takes to sell high-end speakers to audiophiles.

--Bill
 
I have no experience with binaural recordings - do they encode height information?

Technically, no, but some binaural recordings use stereo microphones in a false "head" to simulate the delays and alterations to FR response created by sound being changed by the physical form your eardrums are buried in -- your head and your outer ears. Of course it's not actually your head and outer ears (you can get that too, with binaural in-ear mics), but it's much closer than the metal screen box that contains most microphone elements. This comes much closer to the ability some people here were attributing to microphones, to "encode" height information from the direction/distance/reflections and way they hit the pickup pattern of the mic. That - the stuff about mics - doesn't help them "hear" direction, vertical or otherwise, the false head does...

Tim
 
Technically, no, but some binaural recordings use stereo microphones in a false "head" to simulate the delays and alterations to FR response created by sound being changed by the physical form your eardrums are buried in -- your head and your outer ears. Of course it's not actually your head and outer ears (you can get that too, with binaural in-ear mics), but it's much closer than the metal screen box that contains most microphone elements. This comes much closer to the ability some people here were attributing to microphones, to "encode" height information from the direction/distance/reflections and way they hit the pickup pattern of the mic. That - the stuff about mics - doesn't help them "hear" direction, vertical or otherwise, the false head does...
The false head only helps bring the directional information to the receptor (microphone at the ear canal entrance) in a more controlled or predictable manner. However for recording stereo 2 channel, there are still just two single diaphragm mics actually receiving the information, all summed as if coming from the left or right in total. So although certain aspects of directional events change character, none of that translates to something that can be retrieved as height information.

--Bill
 
while the microphone can only encode the sound waves resulting from the HTRF and ear flaps, there is something else going on in binaural. The altered sound waves due to the hrtf and ear flaps will in fact provide serious vertical information but only when decoded by your ear flaps again. Give it a listen....

http://www.whatsbestforum.com/showthread.php?2754-A-binaural-recording-sample

Tom

Cool Tom. :b

Probably because I'm not used to this; I don't like it at all right now.
It is totally unnatural, distant, uninvolving, ...
But hey, that's just me, telling it the way it is.

* The first one is more fun than the others though; but fun doesn't make it right. :b
...Neither wrong; just not my personal cup of tea.
 
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while the microphone can only encode the sound waves resulting from the HTRF and ear flaps, there is something else going on in binaural. The altered sound waves due to the hrtf and ear flaps will in fact provide serious vertical information but only when decoded by your ear flaps again. Give it a listen....

http://www.whatsbestforum.com/showt...ssion of real height, but it's not. --Bill
 
Hi Bill,

I will do the mono test you suggest. HD-650 cans are used here as well. I have not ever given much thought about the technicalities of binaural but I sure like what they can do compared to plain old stereo. One thing to note as you proably know is that not everybody hears the same thing with headphones, ie some hear the sound in the center of the head, some in the front center, and some unfortunates, like me,hear it in the back center more than mid or toward front center (lucky bums who hear it toward the front center...not a lot, but atleast not in the back center for pete sakes.

Anyway, i wish i understood something i know about all this hearing jazz. so, anyway if we just analize this thing about binaural, i think you can agree that that bouncing ball is way up high and to the right atleast i hear it that way. perhaps some was influenced by the video i dont know..mind plays a lot of corrections tricks as we all know. So, our minds learn with the help of our ear flaps how to tell direction (lets stick to height info in keeping with this thread) and i suppose thats cause the flaps do different things to different frequencies and they then all arrive pretty much as a solid wavefront deep down the ear tunnel..or ,aybe they arrive with time differences due to the flaps i dont know.

so then, on playback in our senns we have this same (relatively same from mike in dummy head ear) wavefront coming again through our ear system flaps and we again somehow make height inof out of it. Do you understand whats happening herer.......it is not just panning as in mono is it? Got any ideas , you have obviously made a study of this stuff compared to most of us. I think a neat explanation would be cool and helpful to the speaker discussion as well...

i will think on it some more, just wanted to get the question out there.

a mike inside an ear flap has got some kind of filtering going (due to the flaps) on unlike some open mike in a typical recording session. there is some differnce there i am betting.

Cheers, and thanks for the mono test idea.....way cool.

Tom

Yes Tom, same for me (from what I quoted you in Red). And above my head of course.
 
Yes, but I was asking your own personal take on it, and not what wiki or others said. :b
I don't really have a personal take on it because I generally don't listen to (or care much about) binaural or surround type recordings. Just plain 'ol two channel stereo (POTCS). From what I've read of it technically, it seems to make a lot of sense.

--Bill
 
some unfortunates, like me,hear it in the back center more than mid or toward front center (lucky bums who hear it toward the front center

Have you tried wearing the Senns forward a bit with the cups turned so they point a bit back toward your ears?

Tim
 
I did some careless research on the subject of vertical localization (elevation) and found very interesting papers on it searching for "monaural" localization. It seems elevation is mainly a monaural property, and naturally is more deeply studied by people in the psycoacoustics and robotics than by sound engineers. Keywords such as "single microphone", "simple reflector" and "learning" seem very important.

Although I can be completely wrong, recent listening I did suggests that line speakers such as full range panels and point like speakers show believable height effects more clearly than some speakers with tweeters on top, that as said by some posters only show "highs on top". One point is sure - cues for vertical localization are very subjective, learning takes a strong part on it and any small systematic effects can overtake on them.
 
I did some careless research on the subject of vertical localization (elevation) and found very interesting papers on it searching for "monaural" localization. It seems elevation is mainly a monaural property, and naturally is more deeply studied by people in the psycoacoustics and robotics than by sound engineers. Keywords such as "single microphone", "simple reflector" and "learning" seem very important.

Although I can be completely wrong, recent listening I did suggests that line speakers such as full range panels and point like speakers show believable height effects more clearly than some speakers with tweeters on top, that as said by some posters only show "highs on top". One point is sure - cues for vertical localization are very subjective, learning takes a strong part on it and any small systematic effects can overtake on them.

Got links?

Tim
 

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