Simplified REW Setup and Use (USB Mic & HDMI Connection) Including Measurement Techniques and How To Interpret Graphs - Page 533 - AVS Forum | Home Theater Discussions And Reviews
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post #15961 of 15971 Old Yesterday, 05:14 AM
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Originally Posted by LastButNotLeast View Post
As you've pointed out, the help section built in to REW is pretty good. But people don't know about it/understand it/want to be bothered.
Very often I don't reply because my knee-jerk reaction is "RTFM!"
The help in REW isn't for the newbie. Worse yet, it never seems to help with the task at hand.

@AustinJerry could probably make a small fortune from writing an REW For Dummies book. I'd buy it.

As one of the least expert people here I have no problem in stepping up and saying RTFM.
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You're more polite than I am.

Michael
Markus more polite?

If you really want to see the same questions posted over and over and no one bothering to do the least bit of prep you should watch the acoustical treatment thread for a while. OMG.
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post #15962 of 15971 Old Yesterday, 01:20 PM
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I spent a bit of time calibrating and testing levels, getting mic in right spot, and reading the manual. Im not 100% positive I did everything right, but did want to post some results/graphs to see if anything is horribly wrong. the 1st is my LR and 2 subs with no smoothing and the second is a waterfall of that @450ms and 1/48smooth. I do have audyssey xt32 on and I have my subs eq turned off. phase is 0 on both subs. looking for feedback as to how to read the graphs. I used 90degree calibration file for umik mic and also double checked with radioshak spl meter. my avr was -26.5 and headroom around 13. It seems like so many variables to deal with, almost ready to say fak it. but if these graphs were done close to right, I wonder what recommendations are out there based on the graphs.
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Power: Marantz sr7008, NAD C 275Bee x 2, Video: Oppo 103, Samsung 75un6300
Speakers: Focal aria 948, Focal cc800v, Klipsch synergy KSF 10.5 Subs: Velodyne HGS 12, VA 1512
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post #15963 of 15971 Old Yesterday, 01:32 PM
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Originally Posted by torii View Post
I spent a bit of time calibrating and testing levels, getting mic in right spot, and reading the manual. Im not 100% positive I did everything right, but did want to post some results/graphs to see if anything is horribly wrong. the 1st is my LR and 2 subs with no smoothing and the second is a waterfall of that @450ms and 1/48smooth. I do have audyssey xt32 on and I have my subs eq turned off. phase is 0 on both subs. looking for feedback as to how to read the graphs. I used 90degree calibration file for umik mic and also double checked with radioshak spl meter. my avr was -26.5 and headroom around 13. It seems like so many variables to deal with, almost ready to say fak it. but if these graphs were done close to right, I wonder what recommendations are out there based on the graphs.
Waterfall looks pretty good. The frequency response curve should actually be smoothed. Try 1/6 smoothing, or the new variable smoothing. Otherwise, the graph is impossible to read.
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post #15964 of 15971 Old Yesterday, 01:43 PM
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here it is 1/6 smoothed and also variable smoothed. appreciate feedback
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Power: Marantz sr7008, NAD C 275Bee x 2, Video: Oppo 103, Samsung 75un6300
Speakers: Focal aria 948, Focal cc800v, Klipsch synergy KSF 10.5 Subs: Velodyne HGS 12, VA 1512

Last edited by torii; Yesterday at 02:13 PM. Reason: add graph
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post #15965 of 15971 Old Yesterday, 02:54 PM
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and I have no idea what spectro is suppose to tell me. +600 thru -600
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Power: Marantz sr7008, NAD C 275Bee x 2, Video: Oppo 103, Samsung 75un6300
Speakers: Focal aria 948, Focal cc800v, Klipsch synergy KSF 10.5 Subs: Velodyne HGS 12, VA 1512
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post #15966 of 15971 Old Yesterday, 04:33 PM
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Originally Posted by torii View Post
and I have no idea what spectro is suppose to tell me. +600 thru -600
That's just a different take on the same data as the waterfall. Some prefer it. I think it's a good view.

On it, the thing to watch for are flames extending up above the body of the response.
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post #15967 of 15971 Old Yesterday, 05:41 PM
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Quote:
Originally Posted by torii View Post
and I have no idea what spectro is suppose to tell me. +600 thru -600
You seem to be throwing measurements at us without demonstrating that you have read the guide WRT how to present graphs. Your first two frequency response graphs show pretty flat in the higher frequencies, but I have o idea what speakers are being measured. And please fix your axis limits. Vertical limits should be 50-100dB, and the horizontal axis limits should be 15-20,000Hz.

The third frequency measurement shows some pretty lumpy response. What is the relationship between this graph and the first two?

And the Spectrogram is a measurement of bass resonance, so it should be restricted to the bass frequencies, 15-300Hz.

Please re-read the guide.
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post #15968 of 15971 Old Yesterday, 06:16 PM
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Originally Posted by AustinJerry View Post

Please re-read the guide.
appreciate all the supposed help, but your guide sucks!

go read the guide, duh your guide isnt for retards like me.

the graphs / jpgs show what speakers are used, 2 subs and the front left/right....the limits are based on the noise floor and top spl, ie 50 and 85....bahh i am done with this mumbo jumbo fake waste of money that dont prove nothing cause of user error.

Power: Marantz sr7008, NAD C 275Bee x 2, Video: Oppo 103, Samsung 75un6300
Speakers: Focal aria 948, Focal cc800v, Klipsch synergy KSF 10.5 Subs: Velodyne HGS 12, VA 1512

Last edited by torii; Yesterday at 06:21 PM.
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post #15969 of 15971 Old Yesterday, 06:44 PM
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duh your guide isnt for retards like me.
If you can't read and follow simple instructions, I agree completely.
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post #15970 of 15971 Unread Today, 05:55 AM
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Originally Posted by torii View Post
appreciate all the supposed help, but your guide sucks!
K, let me get this straight.
You come here asking for advice.
You don't follow any of the guidelines.
You don't understand the guide but you don't say what part.
You insult what has offered as help without any constructive feedback.

Wow! Welcome to my block list and don't let the door hit you on the way out.
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post #15971 of 15971 Unread Today, 06:04 AM
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Originally Posted by torii View Post
user error.
Bingo.
Bye.

Did you really need to quote that entire post in your reply?
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