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In Reply to: RE: Listening chair. posted by Inmate51 on June 08, 2016 at 07:36:34
Exactly how do upper frequencies "bounce right off that leather?" Unless you are standing in the room while listening, I assume your absorptive non-reflective body is actually sitting in that chair, which is of course, the only purpose of it!
The walls, ceiling and floor reflections overwhelm any minuscule contribution of a small leather chair with yourself in it!
Correctly applied acoustic treatments will lessen any reflections from whatever surface to acceptable levels.
Follow Ups:
"Exactly how do upper frequencies "bounce right off that leather?""Every object/surface has characteristics which affect the sound which impinges upon them. These characteristics vary with frequency and angle of impingement. They include: absorption, transmission, and reflection. (There is also amplification, but that occurs in rare and special occasions, often intentionally, such as with a violin or piano.) At upper frequencies, the wavelengths are so short, and the energy level is so small, that there is little to no absorption for a piece of leather furniture at those frequencies. A leather-covered piece of furniture, at upper frequencies, is almost like a piece of glass, with regard to sound.
:)
Edits: 06/08/16
You did not specifically address my point, that is, you are sitting in the chair covering most of that otherwise reflective surface with your entire body. Unless you are wearing a leather suit, the effect of the leather that is left exposed on the chair is inconsequential compared to the larger reflective surfaces of the entire room.
"You did not specifically address my point"
I specifically addressed your point:
"Exactly how do upper frequencies "bounce right off that leather?""
Just fyi, read my edited post, since I did make a clarification with regard to glass - I meant it to be a comparison of two HF sonically reflective surfaces.
:)
I do not dispute that leather presents a reflective surface to high frequencies. However, with regard to a chair, the reflective properties are negligible with your body in it.
Well, maybe maybe not. If you are sitting in the chair and you're squishy like I am, the parts you cover will absorb sound. But if the analogy is a piece of glass, AND if leather is just as reflective (let's assume this is true...for now)
I imagine that if I placed two pieces of glass to either side of my head in the way a wing chair wraps around, then regardless of my squishy sound absorbing body, the surfaces right next to my ears are reflecting right into my ears.
I think that's what he is getting at and I tend to agree. Of course, I haven't had time to actually test this out yet.
Hmmm... When I cup my squishy hands around my ears the sound definitely changes. Is that reflection from a relatively soft surface?
Regards,
Steve
I have no experience with a wing back style chair. If you look at the photos in my earlier post you will see the Ekornes swivel type recliner I use. You will also see the acoustic screen panels arranged to either side of my head area.
In any case the reflections that may result from an occupied leather chair are still dwarfed by the majority of those coming from walls, ceiling and the floor.
Rooms must be properly treated unless the preference is to live in a hall of mirrors!
For purposes of this conversation, it doesn't matter if the chair is occupied or not. It's true that a single chair is a small contributor to the ambient sound of the room overall, but, if you're sitting in it, you have surfaces which are very reflective at high frequencies very near your ears. As I wrote previously, this may or may not bother the chair's occupant. Some folks' hearing is down 15-20 dB at 10 KHz, so they might appreciate a little extra reflection. :)With regard to seating in concert halls, you'll often/usually see chairs which are "plush", even on the bottom side of the seat. This is intended to simulate an occupied seat even when it's not occupied, so as to maintain a reasonably consistent reverberant sound field whether the room is 1/4 full or full.
:)
Edits: 06/08/16 06/08/16
... depending on how many listeners (aka human tube traps) are sharing it with you?
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