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#254021 - 03/27/09 10:29 PM Re: I need some help with room analysis and treatment… [Re: jakewash]
SirQuack Offline
shareholder in the making

Registered: 01/29/04
Posts: 13318
Loc: Iowa
yep, I'm aware of the calibration files, the above program can use calibration files as well. Even I'm an IT guy, I just thought REW had a learning curve that many may find not worth the time. By the way, the above graphs are not mine, just a screen shot of the application.

So far I've been able to get graphs from 18-150hz in 1hz increments with less than 5dB difference across the range.
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M80s-VP180-QS8s-EP600-2xEP350 Denon3808 Outlaw7700
M22-OWM22-VP100-Denon2805
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#254068 - 03/28/09 11:52 AM Re: I need some help with room analysis and treatment… [Re: SirQuack]
michael_d Offline
connoisseur

Registered: 07/23/04
Posts: 3875
Loc: Up yonder
Thanks Randy. That's what I wanted to hear, easy to use....

I think I need to get a new laptop. Actually, I know I need to get a new laptop. The one I am using was a dated POS when I got it.

If anyone has a line on a good used laptop or new one, shoot me a PM. I am looking for an inexpensive laptop that will do nothing but sit in my HT and be used for equipment firmware updates, display calibration and run one of these room analysis programs. I’ve been meaning to get one for a while now. It’s just not very high on my list of stuff to buy.
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#254082 - 03/28/09 12:30 PM Re: I need some help with room analysis and treatment… [Re: michael_d]
SirQuack Offline
shareholder in the making

Registered: 01/29/04
Posts: 13318
Loc: Iowa
One thing to keep in mind is that some that use laptops for graphing their room, use an external USB sound card, versus the built in sound card. One of the steps using rew and other programs requires you to calibrate you sound card by running a cable from the "out" jack to the "in" jack. I could never get my laptop to run this step.. I use my desktop computer, HT computer. It has jacks on the back of the pc, and I've had better luck than using a laptop. then you have to use a long cable to reach your seats. \:\)
_________________________
M80s-VP180-QS8s-EP600-2xEP350 Denon3808 Outlaw7700
M22-OWM22-VP100-Denon2805
Audio Nirvana

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#254085 - 03/28/09 12:35 PM Re: I need some help with room analysis and treatment… [Re: SirQuack]
michael_d Offline
connoisseur

Registered: 07/23/04
Posts: 3875
Loc: Up yonder
I never thought to use my desk top. My office is roughly 40' from the HT. Do they (they being "they")make a cable long enough? What do you think????
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#254098 - 03/28/09 02:12 PM Re: I need some help with room analysis and treatment… [Re: michael_d]
SirQuack Offline
shareholder in the making

Registered: 01/29/04
Posts: 13318
Loc: Iowa
Well, I've used my Denon mic before, that has a pretty good length. Or, if your using a Radio Shack SPL meter, it has an output jack, so you can just plug a long cable with RCA ends from the meter to the sound card jacks, you might need to get an adapter cable that goes from RCA to the jack size for the computer soundcard, I think 3.5mm or something like that.

My HTPC is hooked to my projector, so I can watch the graphs as I took measurments.
_________________________
M80s-VP180-QS8s-EP600-2xEP350 Denon3808 Outlaw7700
M22-OWM22-VP100-Denon2805
Audio Nirvana

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#254105 - 03/28/09 03:24 PM Re: I need some help with room analysis and treatment… [Re: michael_d]
Zimm Offline
connoisseur

Registered: 12/08/08
Posts: 1361
Loc: New Orleans
I also have an old laptop, but thankfully it was good when new so I'm getting buy. Wanted to let you know that I am headed out to buy the Behringer USB Audio Interface (U-Control UCA202), that is supposed to work as well as the external sound cards, but only cost about $30. Might bet you past needing a new sound card. Also, Creative makes a sound and video external box. For a few hundred, you could probably get all the processing you need without buying a new laptop - I assume you already have USB ports, Ethernet, a keyboard, monitor, etc?
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Panny 3000 PJ, 118" Carada, Denon 3300, PS3, Axiom QS8, PSB 5T, B&W sub, levitating speaker wire

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#254121 - 03/28/09 04:48 PM Re: I need some help with room analysis and treatment… [Re: Zimm]
davekro Offline
aficionado

Registered: 02/12/09
Posts: 562
Loc: Discovery Bay, CA
Mike,
Thanks for the link. Before my eyes glassed over (am not an IT guy), it gave me some idea of what's involved. But not until reading more posts here, seeing the term 'program' did I get that REW is software, not an acronym for something or name of a piece of hardware. ;o) Sounds way more involved that I would want to even try getting into. I'm a Mac guy (iMac 2.16Ghz Intel Core 2 Duo. 1.5 GB ram and OLD Powerbook). My wife has a one year old Dell Laptop (Latitude D620). Do PC laptops usually come with an (internal) sound card? Would any particular input or output ports indicate the presence of a sound card? See, I am not an IT guy. Maybe this level of lack of knowledge translates to: "Dave, skip this graphing stuff!" ;\)


Edited by davekro (03/28/09 04:48 PM)
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Dave

"In theory, practice and theory are the same. In practice they're not."

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#254122 - 03/28/09 04:51 PM Re: I need some help with room analysis and treatm [Re: davekro]
Ken.C Offline
shareholder in the making

Registered: 05/03/03
Posts: 17739
Loc: NoVA
Yes, they do. They're generally integrated, as they are on Macs, but if it's got speakers, a headphone jack, and/or a mic jack, it's got a sound controller of some variety. Many times an outboard card/box is preferred because of higher quality or physical isolation from the rest of the (noise producing) electronics in a computer.


Also: Dave, skip this graphing stuff. ;\)


Edited by kcarlile (03/28/09 04:51 PM)
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#254131 - 03/28/09 05:19 PM Re: I need some help with room analysis and treatm [Re: Ken.C]
michael_d Offline
connoisseur

Registered: 07/23/04
Posts: 3875
Loc: Up yonder
Well my traps are installed. Well the two front traps anyway. The rear (I only have three corners as a door is in one corner of the room) corner trap is just there temporarily as I have to re-mount my surround back speaker. I’ve been meaning to swap out the M3’s with another set of QS 8’s back there, so this is a good excuse to do that now. When the new one’s show up, I’ll consider doing some sweeps.

The traps definitely did something. The LFE feels as if it’s doubled. I definitely need to re-calibrate things. The house is full of women right now and they have effectively driven me out of the house. I’ll post pictures tomorrow. I’m getting out of dodge now……..
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#254147 - 03/28/09 06:24 PM Re: I need some help with room analysis and treatm [Re: Ken.C]
davekro Offline
aficionado

Registered: 02/12/09
Posts: 562
Loc: Discovery Bay, CA
 Originally Posted By: kcarlile

Also: Dave, skip this graphing stuff. ;\)


Ken,
Moving on here, nothing to see (hear)... ;\)

PS. When I saw your Mac, I knew you could be trusted!
_________________________
Dave

"In theory, practice and theory are the same. In practice they're not."

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