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Imaging and SoundStage
Hello crew, Back from Dagogo’s Cal Audio Shows and was it fun to hear all those different systems. And beautiful too. I got to meet Steve, our founder and also our forum moderator. Glad to know we have one. That was such a pleasant surprise. He came to one of my 4 lectures. By the...- Art Noxon
- Post #53
- Forum: Art Noxon Hosts a Discussion Corner on Room Acoustics
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Imaging and SoundStage
Yes, we hit a dead zone again....overwhelmed, engulfed by the endless, tedious and un interesting yet demanding needs of business. I am sorry to have disappeared. Going to Cal Audio Show in SF this weekend, giving a talk each of the 3 days between 10 and 11 am. I’ll cover the elements of...- Art Noxon
- Post #50
- Forum: Art Noxon Hosts a Discussion Corner on Room Acoustics
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Imaging and SoundStage
Guilford "701" is the old designation. It's called Regatta and Vertical Surfaces now. Another Guilford fabric is even more breathable and lighter weight, called Cirrus. Choose light color so you can't see through so easily. If you want mail me a piece of what you are thinking about, I'll...- Art Noxon
- Post #32
- Forum: Art Noxon Hosts a Discussion Corner on Room Acoustics
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Imaging and SoundStage
Just noticed "off topic" and I was curious what was off topic. I know I diverge once in a while maybe all too often, and I could stop with the side bars, but I aked about that some time ago and the crew said, keep telling the mini stories so I do. The off topic could be because this...- Art Noxon
- Post #30
- Forum: Art Noxon Hosts a Discussion Corner on Room Acoustics
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Imaging and SoundStage
terryj and crew, Good points and they remind me of something. In the good ole days (pre home theater) I went to lots of CES shows and helped lots of rooms get set up. Great fun, great people working together in high stress situations. “The show starts in 6 hours and the room still sounds...- Art Noxon
- Post #28
- Forum: Art Noxon Hosts a Discussion Corner on Room Acoustics
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Imaging and SoundStage
You are such a tease. And you are oh so right to bring it up. It is such a big deal I can't even begin to talk about it here. This part of our visiting is confined somewhat to imaging, soundstage, acoustics and now I see we've squeezed in speaker dispersion patterns. Please visit the...- Art Noxon
- Post #26
- Forum: Art Noxon Hosts a Discussion Corner on Room Acoustics
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Imaging and SoundStage
Take photos of speaker and post them. How the speaker is laid out and built determines how it illuminate the room. I think wavefront shaping by the baffle board and the box is a big deal. If the back side is any way tricky, let's see it. Don't worry about the mess in the room, everybody's...- Art Noxon
- Post #25
- Forum: Art Noxon Hosts a Discussion Corner on Room Acoustics
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Imaging and SoundStage
“dead wrong” sounds so awful and final. Let’s hope we are having a miscommunication instead of a funeral. Directional speakers does not mean to me that they won’t diappear, it just means they play less mids and highs sideways, above and behind them, than does a pure omni speaker which...- Art Noxon
- Post #18
- Forum: Art Noxon Hosts a Discussion Corner on Room Acoustics
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Imaging and SoundStage
OK, Musicality, from my perspective, is if a musical instrument sounds like the musical instrument. When I'm working on a room for an audiophile, they are very quick to point out that they are interested in musical accuracy, they want instruments and ensembles to sound great, real, somehow be...- Art Noxon
- Post #14
- Forum: Art Noxon Hosts a Discussion Corner on Room Acoustics
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Imaging and SoundStage
Imaging and Sound Stage I think we are not only interested in musicality but we are interested in imaging and the soundstage. Some listeners are very serious about musicality and consider imaging and sound staging something of a novelty. Other listeners, possibly more frivolous (I fit into...- Art Noxon
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- Replies: 56
- Forum: Art Noxon Hosts a Discussion Corner on Room Acoustics
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Acoustic absorption under a platform
If I understand correctly, you have a huge surface a few inches above another surface. You want to put sound absorption between them and supply a huge amount of sabines to the room. However if sound can't get to the absorber then the absorber doesn't absorb any sound. You can add acoustic...- Art Noxon
- Post #5
- Forum: Art Noxon Hosts a Discussion Corner on Room Acoustics
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Listening Room Intelligibility Test
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Hello again, I’ve been out of the loop for a while and finally things are back to normal. We’ve been exploring a certain kind of test. It is a modulation transfer function. It measures the ability of...- Art Noxon
- Post #148
- Forum: Art Noxon Hosts a Discussion Corner on Room Acoustics
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Listening Room Intelligibility Test
We are with Magico/Spectral in Maier Shadi's room (Audio Salon). We are not doing much else at that show, unfortunately. We are doing lots at Cal Audio show, in SF next month. I can't even go to THE Show, prior commitment. I was down there couple weeks ago and scoped the place out and...- Art Noxon
- Post #140
- Forum: Art Noxon Hosts a Discussion Corner on Room Acoustics
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Listening Room Intelligibility Test
OK, I will pick on someone and let's see what happens. I did spend some time describing in general terms what I was seeing. ONE IMPORTANT THING: We are currently going through the test CD, because of a few complaints we received about timing, before we print our next edition (to be handed...- Art Noxon
- Post #138
- Forum: Art Noxon Hosts a Discussion Corner on Room Acoustics
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Listening Room Intelligibility Test
Hi guys, I actually wrote a very long answer, going into lots of detail and then I decided I was just meandering and needed to stay focused, so I wrote the streamlined version posted here. One thing I went into during my long answer, that I forgot to even mention here, is the following. Google...- Art Noxon
- Post #137
- Forum: Art Noxon Hosts a Discussion Corner on Room Acoustics
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Listening Room Intelligibility Test
Hi guys, Yes, where's Art? I've been asking that question myself. Being out of the loop for the last week, and honestly, I found myself missing our visits. The stress of running a business sometimes just overwhelms me, and I forget to remember to do what I love to do, which is to dream...- Art Noxon
- Post #131
- Forum: Art Noxon Hosts a Discussion Corner on Room Acoustics
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Listening Room Intelligibility Test
"btw, I'm not the MagnepanStax guy, you might have been thinking of someone else." Gary, I am referring to that very funny photo in post #27. Art- Art Noxon
- Post #120
- Forum: Art Noxon Hosts a Discussion Corner on Room Acoustics
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Listening Room Intelligibility Test
READING RED TEA LEAVES Hello again, I’m checking in for some more adventures. Here I am going over the latest two MATT printouts. So refer to them as I go through this project. We’ll start with Mark, the bass pig and end with Gary, the MaggiStax guy. It should be very clear that...- Art Noxon
- Post #114
- Forum: Art Noxon Hosts a Discussion Corner on Room Acoustics
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Listening Room Intelligibility Test
======================================================== Yes and yes, I think. right on all accounts. Never mind about $35, just post the wav file. for all to listen to and I'll run it. Yes, I am talking about deep bass overdriving the structure of the room. Yes, 2 hp subwoofer...- Art Noxon
- Post #104
- Forum: Art Noxon Hosts a Discussion Corner on Room Acoustics
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Listening Room Intelligibility Test
http://www.acousticsciences.com/Comparison_2_MATTs.pdf http://www.acousticsciences.com/Comparison_2_LF_MATTs.pdf Here are the latest two MATT printouts. In don't know how to get their image posted but if you click on these urls they open up to the images on ASC website. If someone could...- Art Noxon
- Post #101
- Forum: Art Noxon Hosts a Discussion Corner on Room Acoustics
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Listening Room Intelligibility Test
Speaking of listening levels. Most hot rodders know how fast their car can go. And, most audiophiles know how loud they can play their room. It might be interesting to honestly compare listening level limits for different system/rooms among the participants. Who knows how loud they can play...- Art Noxon
- Post #96
- Forum: Art Noxon Hosts a Discussion Corner on Room Acoustics
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Listening Room Intelligibility Test
Doug. draw a side view of your room to scale. squint your eyes and you see a parabolic dish comprised of your rear wall and the back half of your steep ceiling...and this dish is directly focused on the lower front corner of your room, which is where your speaker are located. The room width is...- Art Noxon
- Post #89
- Forum: Art Noxon Hosts a Discussion Corner on Room Acoustics
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Listening Room Intelligibility Test
Gary, Acoustic ceiling tiles tend to produce weak bass. Dealer showroom always learn this lesson the hard way. You have added weight to your ceiling tiles with the plywood. fiberglass transfers the weight evenly to the ceiling tile and allows no rattle between the two hard sheets. this was a...- Art Noxon
- Post #88
- Forum: Art Noxon Hosts a Discussion Corner on Room Acoustics
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Listening Room Intelligibility Test
Yes, Doug. Starting with the peak under 10 on the right side of the low frequency range of your test, call it 1, and then count to the left to peak 13. That is a good tone burst. Peaks 14 through 17 are not so good, especially 15 and 16. Notice we have 4 crummy peaks 14 through 17. That is...- Art Noxon
- Post #87
- Forum: Art Noxon Hosts a Discussion Corner on Room Acoustics
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Listening Room Intelligibility Test
Gary, I double checked. I was looking at your printout. It is the last one on the previous page. I'm glad we had that truck, so we could demo what happens to data with the noise floor is loud. Intelligibility is reduced. Do another and I'll run it also. ........................ART- Art Noxon
- Post #84
- Forum: Art Noxon Hosts a Discussion Corner on Room Acoustics
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Listening Room Intelligibility Test
For fun, go to Gary's MTF, that's Modulation Transfer Function. Start on the far right. We are going to count tone burst peaks. The first peak in fron the right is under the 2 of 20. That's 1. Now 1 thru 6 are clean peaks. 7, 8 and 9 are scrambled peaks, not spikes as before. And then we...- Art Noxon
- Post #80
- Forum: Art Noxon Hosts a Discussion Corner on Room Acoustics
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Listening Room Intelligibility Test
When we have a mic or preamp with a roll off, the modulation effect is not changed, just how loud the modulation gets can change between loud to quiet. Loudness and intelligibility are different things. They are independant variables. You can change loudnes and not change intelligibility or...- Art Noxon
- Post #79
- Forum: Art Noxon Hosts a Discussion Corner on Room Acoustics
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Listening Room Intelligibility Test
We have data. the first one is Full Test File which shows all 3 MATT test print outs. The second is LF Range, which shows the performance foir all 3 rooms in Low Frequency range, 28 to 100 Hz. If someone wants to post these so they show up visually somewhere, please do that. I'm not sure...- Art Noxon
- Post #74
- Forum: Art Noxon Hosts a Discussion Corner on Room Acoustics
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Listening Room Intelligibility Test
Excellent explaination. People have 2 ears, each located in different positions. Our ear have directionality features where they tend to highs more from front than back, due to ear shape, the pinna. Our head tends to shadow one ear and the other from side to side sound in mid and highs...- Art Noxon
- Post #73
- Forum: Art Noxon Hosts a Discussion Corner on Room Acoustics
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Listening Room Intelligibility Test
You guys are so creative, listening to each others MATT test. What a neat way to exchange and compare data sets. I never thought of swapping test runs. But then, you guys are such a lively bunch, you are already pushing the edge of the art... This medium of communication allows people to...- Art Noxon
- Post #66
- Forum: Art Noxon Hosts a Discussion Corner on Room Acoustics
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