"Official" Audyssey thread (FAQ in post #51779) - Page 2484 - AVS | Home Theater Discussions And Reviews
Forum Jump: 
Reply
 
Thread Tools
post #74491 of 74496 Old Today, 03:05 PM
AVS Addicted Member
 
kbarnes701's Avatar
 
Join Date: Jan 2008
Location: Main Listening Positon
Posts: 21,030
Mentioned: 16 Post(s)
Tagged: 0 Thread(s)
Quoted: 3385 Post(s)
Liked: 2693
Quote:
Originally Posted by Soulburner View Post
But then if after calibration you uncover them and go back to business as usual, you're going to have problems.
I would agree with the exception of covering the reflective backs of chairs. Leaving them uncovered during the calibration is likely to cause more problems than removing them for listening would. If you have measuring capability, it's an easy test. With my leather chairs 'bare' there was a significant difference - and not a good one - between that cal and one with the chairs covered for the cal.

It's easy to overthink this. We usually measure a room without an audience in it for example. Then we happily play back with two, three or more people sitting in the room - all significant, non-reflective masses.
kbarnes701 is online now  
Sponsored Links
Advertisement
 
post #74492 of 74496 Old Today, 03:12 PM
AVS Special Member
 
mogorf's Avatar
 
Join Date: May 2009
Location: Budapest, Hungary
Posts: 4,660
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 363 Post(s)
Liked: 154
Quote:
Originally Posted by kbarnes701 View Post
It's easy to overthink this. We usually measure a room without an audience in it for example. Then we happily play back with two, three or more people sitting in the room - all significant, non-reflective masses.
How about those "two, three or more people sitting in the room" all dressed up in (reflective) leather gear?

Just couldn't resist!

Have a nice, overthinking-free weekend all!!
mogorf is online now  
post #74493 of 74496 Old Today, 03:23 PM
Senior Member
 
mthomas47's Avatar
 
Join Date: Nov 2007
Posts: 353
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 86 Post(s)
Liked: 52
Quote:
Originally Posted by NorthSky View Post
Ok, if you have a leather couch, yeah, you can put a blanket on top of it to take Audyssey measurements with the mic.

And if you have a glass coffee table between you and your screen, put a blanket on top of it too.
And if you have large reflective windows all around, close the curtains.

Brief, cover any highly reflective surface near by.
Quote:
Originally Posted by Soulburner View Post
But then if after calibration you uncover them and go back to business as usual, you're going to have problems.


I agree with both of you, that in general you don't want to change anything between calibration and playback. But without wishing to be argumentative, I would cite the blanket over the couch back as an exception to that general rule. Getting the Audyssey mic too close to a hard surface such as a leather fabric "may" cause problems. No guarantee that it will, but it may. That is because the mic can pick-up short wavelength, high-frequency reflections from the hard surface only 3"-6" away, let's say, and attempt to over-correct for them. In my room, that created a rather harsh treble sound even with XT-32.

There are three ways that you can try to avoid that comb filtering effect from having your mic too close to a hard surface during calibration. The first is to move the mic forward another 12" or so. The second is to raise the mic 6" or so above the surface of the couch. The first two were often recommended by Audyssey when someone asked about proximity between the mic and a leather chair back. The third method is to temporarily cover the hard surface with something absorbent, like a soft towel or a blanket.

But all three measures are temporary, and just apply to the calibration. If you move the mic forward away from your chair, it is not recommended that you hunch forward where the mic was during movie or music playback. Similarly, if you raise the mic, you don't have to put your chair on risers, or sit on pillows to get up to where the mic was. And you don't have to leave the towel or blanket in place either.

I think we tend to obsess about this stuff a lot, as Jerry said in response to the jokes a few posts back. It may not be necessary to worry about doing any of the precautions I mentioned to get a good calibration. But if you are concerned, or are hearing something amiss in the higher frequencies, then finding a way to avoid comb filtering during calibration is worth trying, and the temporary blanket method is a good one.
mthomas47 is online now  
post #74494 of 74496 Old Today, 03:25 PM
Advanced Member
 
Soulburner's Avatar
 
Join Date: Oct 2007
Posts: 681
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 194 Post(s)
Liked: 72
Quote:
Originally Posted by kbarnes701 View Post
I would agree with the exception of covering the reflective backs of chairs. Leaving them uncovered during the calibration is likely to cause more problems than removing them for listening would. If you have measuring capability, it's an easy test. With my leather chairs 'bare' there was a significant difference - and not a good one - between that cal and one with the chairs covered for the cal.

It's easy to overthink this. We usually measure a room without an audience in it for example. Then we happily play back with two, three or more people sitting in the room - all significant, non-reflective masses.
But I was talking about post-calibration. If you go to those lengths for measurement, then un-do it all you end up with issues because you increase the reflectivity of the room.
Soulburner is online now  
post #74495 of 74496 Old Today, 03:49 PM
AVS Special Member
 
NorthSky's Avatar
 
Join Date: Jan 2013
Location: Canada - West Island: Vancouver, South Direction: Go East
Posts: 8,335
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 3460 Post(s)
Liked: 1192
There is a balance. ...Like in all things life.

I agree with the couch thing, because of the Audyssey mic nearby. ...The rest is different, in direct relation to the mic measurements.

And, really, who wants to watch John Wick in a very highly reflective room? ...C'mon now, John Wick deserves much better than that.

______

If your room is less than perfect, and you took Audyssey measurements with a bunch of reflective surfaces, and you listen too with a bunch of reflective surfaces; just turn Audyssey Off and see what happens.

Or two, change your environment for the best (acoustic sound wise) .....Before and after Audyssey Room Calibration and EQ measurements and final results.
NorthSky is online now  
post #74496 of 74496 Old Today, 04:19 PM
AVS Special Member
 
pbarach's Avatar
 
Join Date: Jul 2005
Location: Northeast Ohio
Posts: 2,706
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 146 Post(s)
Liked: 120
Quote:
Originally Posted by NorthSky View Post

♦ If you get those two mic adapters, you can put your boom anywhere and install the Audyssey mic in any position you like (normally upright).

The first pic on top is the standard mic 5/8" to 3/8" male screw adapter (perfect for the 1/4" hole of a camera and the Audyssey mic).

The second pic (with two lengths) is for total flexibility; the one you attach first, then that small adapter from the top pic to it.
Thanks, but I decided to try buying a shorter mic stand and use the camera adapter recommended in the FAQ, which allows the mic to be tilted upwards when the boom is pointed up to reach a low seating position, but which is useless for a low seating with taller the On Stage boom mic stand. The stand I bought is the same price as the Rode adapter you pictured"
http://www.amazon.com/Samson-MB1-Min...=cm_cr_pr_pb_t

AT&T U-Verse Northeast Ohio

Denon x4000, Carver m1.0t, Samsung LED TV, B&W 704 mains, two M&K subwoofers, Oppo 103, Roku 2, etc.
Headphone system: Sennheiser HD600, AKG K701, Burson HA-160, Marantz CD5004, Denon DVD-3910
pbarach is online now  
Reply Receivers, Amps, and Processors

Tags
Audyssey , Receivers Amplifiers , Kef Kht1005 2se 5 1 Subwoofer Satellite System With C4 Subwoofer Gloss White , 5 6 7 1 7 2 Or 8 1 8 2 One Or Two Subwoofer Compatible 16 Banana Post 2 Rca Speaker Wall Plate For H
Gear in this thread - Kht1005 by PriceGrabber.com



Forum Jump: 

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off