ttocs
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I always have a wonderful time, wherever I am, whomever I'm with. (Elwood P Dowd)
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Post by ttocs on Aug 6, 2020 10:47:32 GMT -5
I was unsuccessful with a 7.3.4 configuration and I actually have 14 speakers setup in my room. Dirac swept through all speakers which sounded fine but still got the error. I have dual/mono for left/right and Mono for center subs and left the phase set to zero. Something else must be wrong with one or more of the other speakers. Did you try to add only one sub at a time to a simple setup? Left/Right, plus one sub Left/Right, plus two subs Left/Right, plus three subs etc I don't know how else to track success vs fail. |
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Post by kbuggs on Aug 6, 2020 10:59:02 GMT -5
Yes, I did 2 simple setups successfully. I did a 2 channel with center sub and a 2 channel with left/right dual subs. I did not do left/right plus 3 subs. Hard to find quiet time to work on this. It's quite finicky which is annoying.
Thanks guys!!! I think I'll put Dirac on pause and just keep my current Preset 1 configuration which sounds pretty good anyway. Not sure Dirac will be able to improve on what I have but wanted to see. It only adjusts the frequency between 15hz and 202hz and does phase adjustments from what I read. I'll try again with new microphone and new laptop sometime down the road when I get time.
Will update if I achieve a successful measurement.
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Post by nesnith on Mar 14, 2021 3:21:12 GMT -5
I encountered the same "low signal to noise ratio" error after having followed the Emotiva Dirac Live Room Correction Tutorial in YouTube. Since I only had Left/Right/Center channels, I ended up going to the XMC-2 setup menu, and turned off all other channels that were not used.
Simply doing the step of turning off unused channels eliminated the "low signal to noise ratio" error for me. Perhaps this may help someone resolve this issue.
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Post by jasonf on Feb 24, 2024 21:54:36 GMT -5
Did anyone ever resolve this? I'm running into the same issue and I've tried everything.
I'm convinced there must be something wrong with the EMM-1.
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Lsc
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Post by Lsc on Feb 24, 2024 22:04:30 GMT -5
Try turning the levels up a bit. The test time should be almost annoyingly loud but not clip for best results
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KeithL
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Post by KeithL on Feb 25, 2024 2:57:16 GMT -5
By "tried everything".... - you've been careful to make sure everything is turned off - been careful NOT to make any noise during the test run - tried turning the level up a bit - turned off any lights that run on dimmers
(light dimmers have a tendency to make electronic noise that can interfere with delicate electronics like microphone preamps)
We have had a few bad digitizer cables and microphones... but they're not terribly common... so you want to rule out everything else first.
If you're sure you've ruled out everything else then call in and talk to someone in Tech Support about a replacement digitizer cable...
Did anyone ever resolve this? I'm running into the same issue and I've tried everything. I'm convinced there must be something wrong with the EMM-1. |
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ttocs
Global Moderator
I always have a wonderful time, wherever I am, whomever I'm with. (Elwood P Dowd)
Posts: 8,161
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Post by ttocs on Feb 25, 2024 9:00:07 GMT -5
Did anyone ever resolve this? I'm running into the same issue and I've tried everything. I'm convinced there must be something wrong with the EMM-1. The version of Dirac makes a difference. Dirac relaxed some of its error reporting in version 3.3.3 from a couple years ago so folks didn't encounter this error as easily. What Mic Gain setting and Speaker Level settings are you using in Volume Calibration? As LSC stated above, the sweeps need to play loud enough so the mic is able to "hear" the sweeps well enough to avoid this error. It's a balancing act. Not too loud so to avoid clipping error, and not too quiet to avoid signal to noise error. This will change due to peaks and nulls encountered at the various mic locations. I have a extreme null 3 feet left of MLP and 1 foot higher than ear level that will always get a signal to noise error, so I cannot place the mic near this spot, the bass frequencies drop off dramatically. |
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Post by jasonf on Feb 25, 2024 14:37:53 GMT -5
By "tried everything".... - you've been careful to make sure everything is turned off - been careful NOT to make any noise during the test run - tried turning the level up a bit - turned off any lights that run on dimmers
(light dimmers have a tendency to make electronic noise that can interfere with delicate electronics like microphone preamps)
We have had a few bad digitizer cables and microphones... but they're not terribly common... so you want to rule out everything else first.
If you're sure you've ruled out everything else then call in and talk to someone in Tech Support about a replacement digitizer cable...
Did anyone ever resolve this? I'm running into the same issue and I've tried everything. I'm convinced there must be something wrong with the EMM-1. I've only run it when everything in the house is off - dishwasher, fridge, washer/dryer. I've disabled any speakers I'm not using (actually I'm initially only trying to do a 2.1 run). I do live in downtown Seattle, so there is *always* a degree of ambient city noise, but I have triple-pane glass and I've tried running at the quietest hours with the same result. Maybe I'll try a 2.0 pass to see if it's any different without the sub. I have not tried turning off the dimmers, I will try that. I have Lutron Casetta dimmers through the house. Generally I'm starting with the mic at very low gain, getting about -40db ambient. Then I boost the volume up, and I've tried going very loud, close to the red zone. It's loud enough that I wear ear protection. I have also tried higher mic gains and lower volume just in case. I'll give this another couple of runs tonight and reach out to support if there is no luck. I also ordered a UMIK-1, but that might take a while to show up. Thanks! |
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Post by jasonf on Feb 25, 2024 14:41:25 GMT -5
Did anyone ever resolve this? I'm running into the same issue and I've tried everything. I'm convinced there must be something wrong with the EMM-1. The version of Dirac makes a difference. Dirac relaxed some of its error reporting in version 3.3.3 from a couple years ago so folks didn't encounter this error as easily. What Mic Gain setting and Speaker Level settings are you using in Volume Calibration? As LSC stated above, the sweeps need to play loud enough so the mic is able to "hear" the sweeps well enough to avoid this error. It's a balancing act. Not too loud so to avoid clipping error, and not too quiet to avoid signal to noise error. This will change due to peaks and nulls encountered at the various mic locations. I have a extreme null 3 feet left of MLP and 1 foot higher than ear level that will always get a signal to noise error, so I cannot place the mic near this spot, the bass frequencies drop off dramatically. I'm running the latest - 3.8.2 I've been mostly keeping the mic gain under 15%, and going as high as -8db on the master volume. I've tried higher gain with lower volume as well. |
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ttocs
Global Moderator
I always have a wonderful time, wherever I am, whomever I'm with. (Elwood P Dowd)
Posts: 8,161
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Post by ttocs on Feb 25, 2024 19:42:54 GMT -5
The version of Dirac makes a difference. Dirac relaxed some of its error reporting in version 3.3.3 from a couple years ago so folks didn't encounter this error as easily. What Mic Gain setting and Speaker Level settings are you using in Volume Calibration? As LSC stated above, the sweeps need to play loud enough so the mic is able to "hear" the sweeps well enough to avoid this error. It's a balancing act. Not too loud so to avoid clipping error, and not too quiet to avoid signal to noise error. This will change due to peaks and nulls encountered at the various mic locations. I have a extreme null 3 feet left of MLP and 1 foot higher than ear level that will always get a signal to noise error, so I cannot place the mic near this spot, the bass frequencies drop off dramatically. I'm running the latest - 3.8.2 I've been mostly keeping the mic gain under 15%, and going as high as -8db on the master volume. I've tried higher gain with lower volume as well. Wow! If I were to use those settings my speakers would blow (This is assuming that you have at least one speaker level slider at its maximum). Are any of your speaker sliders at maximum? or are they much lower? If the latter, then this would be why you need the Master Output to be as high as it is. I normally use a UMIK-1 mic with a USB-A connection and -18dB sensitivity (default value, internally adjustable). With this mic, I usually use these settings in Volume Calibration. UMIK-1 USB-A 18dB Master Output = -32dB Mic Gain = 100% Speaker levels = -24dB Subwoofer level = -18dB Sweep SPL = 80dB+ Weakest channel is left at its maximum level, all other speaker channels are adjusted to match, but subwoofers are +6dB higher. I connected the EMM-1 and I get the following Volume Calibration settings. EMM-1 (Sensitivity is less than UMIK-1 -18dB mic, It's about -6dB less.) Master Output = -32dB Mic Gain = 100% Speaker levels = -30dB Subwoofer level = -24dB Sweep SPL will be the same as above because the Master Output is the same and my weakest channel slider is at the same Level as before - all the way up. The only change here is the fact that the EMM-1 will not "hear" as well as the UMIK-1 mic due to lower sensitivity. |
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Post by jasonf on Mar 9, 2024 2:43:58 GMT -5
Well, I got my UMIK-1 today and I have to say absolutely ZERO of the problems I've had with the EMM-1. I was able to run a calibration right away with no errors at all. Even with the typically Seattle traffic noises outside.
I'll do more testing over the weekend. What is interesting, is that the default gain values are different when I connect the EMM-1 vs the UMIK-1.
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