ttocs
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Post by ttocs on May 7, 2021 13:00:41 GMT -5
And as a newbee I did not zeroed the speaker settings before the run.
So when I go into the meny I can still see my level settings. I belive this settings are in adition to the dirac, as dirac only do the eq and dont bother with the settings? But they should be 0 right? (to be even and only be raised or lowered to my likings... ) Can I zero them out now or must I run the dirac again, after? Yes, the levels in Menu are in addition to Dirac. Dirac makes it so that 0.0dB is the correct setting, mostly, but should be checked and adjusted as needed. You can zero the levels before or after, doesn't matter when, but again - should be checked and adjusted to your liking. |
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Deleted
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Post by Deleted on May 7, 2021 13:03:53 GMT -5
When I measure I always recline ALL of the seats in the measurement row. My assumption is that it should reduce the most egregious reflections. Considering that at any point in time while watching/listening you will invariably recline/incline at a near infinite number of positions (extreme variability). You could cover hard/reflective surfaces with towels or blankets if desired.
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ttocs
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Post by ttocs on May 7, 2021 13:13:36 GMT -5
As others have suggested, taming reflections close to the mic is what I do. I also recline the backs of the sofa.
The key thing to keep in mind is that the mic should have a direct line of sight to every speaker. If the mic cannot see the speaker, then it will measure ONLY REFLECTIONS. So I only use mic locations that see every speaker.
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ttocs
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Post by ttocs on May 8, 2021 4:50:24 GMT -5
The timing measurement is done at the first mic location in the MLP location. Thanks, I take it that the first measuring point is pretty important to get centered then... If I remember right you're using both Emotiva and Minidsp? If so was just curious if you've noted the timing in the Minidsp's Plugin Dirac tab? Seems that various crossovers and actual processor latency shows up in Dirac time alignments. For example, the DDRC-88A has 13ms of latency in of itself. I was curious as to whether this is an issue when mixing multiple processors or running some speakers using Dirac and not others? Reason I ask is I may reintroduce Dirac again in my audio chain. The delays all seem to add up to a moot point. Dirac takes everything into consideration, adds it all up, adds a little extra, and the lip sync still works. Each miniDSP is connected to a different channel, so they're not "stacked" inline at the moment, although at one point I had one connected to the other but even then the delay wasn't so much that lip sync was affected. |
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Erwin.BE
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Post by Erwin.BE on May 8, 2021 4:59:03 GMT -5
When I measure I always recline ALL of the seats in the measurement row. My assumption is that it should reduce the most egregious reflections. Considering that at any point in time while watching/listening you will invariably recline/incline at a near infinite number of positions (extreme variability). You could cover hard/reflective surfaces with towels or blankets if desired. But what's the point in measuring with the mic "in sight" when afterwards you actually use the setup with the obstruction of the backrest between the speaker and your ears? |
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ttocs
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Post by ttocs on May 8, 2021 6:28:03 GMT -5
But what's the point in measuring with the mic "in sight" when afterwards you actually use the setup with the obstruction of the backrest between the speaker and your ears? Speaking for myself, When I recline the seat-backs, it's not to "clear" the obstruction between mic and speaker, it's to reduce the reflection close to the mic from the leather seating, and also to allow the mic and boom the physical clearance they need. All the mic positions are determined while the seat-back is in the up position. |
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Post by jim80z on May 8, 2021 7:01:51 GMT -5
Speaker Distance is totally irrelevant with Dirac and won't even show up in the Menu when a Dirac filter is active. Set the Levels to 0.0dB for all speakers. Dirac sets its own levels internally and remains hidden. After running Dirac you can check the RMC Levels and verify that they are all close and adjust if needed. On my XMC-2 I adjusted a few channels less than a couple dB, but my subwoofer channels needed to be adjusted down to -6dB. 1. With the current version of Dirac I leave the mic at 100%. 2. I adjust the Master Volume down to around -43dB or so before adjusting the Speaker Sliders, this is so the next step isn't very loud. 3. Next I hit the Play button for each speaker and let it play for a couple seconds so the meter can stabilize and get a reading. This is done for every speaker quickly. 4. Then I look for the weakest channel, play the pink noise, and adjust the Master Volume to get the meter in the zone, I choose to set it to about -25dB, but your system, speakers, and amps may like something a little different. I'm now done playing pink noise. Dirac knows how loud each channel is and is so I don't need to play the noise anymore for every other channel. 5. Now I simply adjust every slider to match the first channel that has been set - without playing the pink noise, it's not needed. Now I go to "Proceed to select arrangement". edit: This entire process takes about two minutes. Hi Thanks for the reply. I tried this as described and as soon as Dirac hit one of the two main speakers (L or R) it would stop measuring and throw up a clipping error. So then I reduced master volume low enough to allow the main left and right to actually measure but once it sweeps all the speakers Dirac throws up an error re signal to noise ratio (too much noise).....cant win. |
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ttocs
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Post by ttocs on May 8, 2021 10:26:55 GMT -5
Speaker Distance is totally irrelevant with Dirac and won't even show up in the Menu when a Dirac filter is active. Set the Levels to 0.0dB for all speakers. Dirac sets its own levels internally and remains hidden. After running Dirac you can check the RMC Levels and verify that they are all close and adjust if needed. On my XMC-2 I adjusted a few channels less than a couple dB, but my subwoofer channels needed to be adjusted down to -6dB. 1. With the current version of Dirac I leave the mic at 100%. 2. I adjust the Master Volume down to around -43dB or so before adjusting the Speaker Sliders, this is so the next step isn't very loud. 3. Next I hit the Play button for each speaker and let it play for a couple seconds so the meter can stabilize and get a reading. This is done for every speaker quickly. 4. Then I look for the weakest channel, play the pink noise, and adjust the Master Volume to get the meter in the zone, I choose to set it to about -25dB, but your system, speakers, and amps may like something a little different. I'm now done playing pink noise. Dirac knows how loud each channel is and is so I don't need to play the noise anymore for every other channel. 5. Now I simply adjust every slider to match the first channel that has been set - without playing the pink noise, it's not needed. Now I go to "Proceed to select arrangement". edit: This entire process takes about two minutes. Hi Thanks for the reply. I tried this as described and as soon as Dirac hit one of the two main speakers (L or R) it would stop measuring and throw up a clipping error. So then I reduced master volume low enough to allow the main left and right to actually measure but once it sweeps all the speakers Dirac throws up an error re signal to noise ratio (too much noise).....cant win. hmmmmm . . . . Then reduce the two sliders for the Left/Right by a few dB or more while leaving all the other ones in the good zone. Can you post a screenshot of the Volume Calibration screen please after all the sliders are set? |
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Deleted
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Post by Deleted on May 8, 2021 11:34:28 GMT -5
When I measure I always recline ALL of the seats in the measurement row. My assumption is that it should reduce the most egregious reflections. Considering that at any point in time while watching/listening you will invariably recline/incline at a near infinite number of positions (extreme variability). You could cover hard/reflective surfaces with towels or blankets if desired. But what's the point in measuring with the mic "in sight" when afterwards you actually use the setup with the obstruction of the backrest between the speaker and your ears? ..."Considering that at any point in time while watching/listening..." Did you not read my post? |
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Erwin.BE
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Post by Erwin.BE on May 8, 2021 20:24:52 GMT -5
I read it allright, but chose to not take it into consideration.
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Deleted
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Post by Deleted on May 9, 2021 11:33:40 GMT -5
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Deleted
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Post by Deleted on May 10, 2021 0:26:01 GMT -5
Question, for a 2.2 channel system should I position the microphone 0 degrees or 90 degrees?
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Deleted
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Post by Deleted on May 10, 2021 2:48:21 GMT -5
0 degrees would be horizontal and 90 degrees vertical.
Haven't found satisfactory information as to whether zero might be best for 2 channel systems while 90 degrees for surround and atmos. That's what I think anyways.... seems like most are going w/ 90 degrees regardless.
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Post by oleops on May 12, 2021 20:34:41 GMT -5
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Post by leonski on May 12, 2021 22:23:23 GMT -5
I see the guys in the video answered my question about microphone 'patterns'.....And it makes sense ot point an OMNIdirectional mic UP.......
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KeithL
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Post by KeithL on May 13, 2021 8:17:30 GMT -5
Don't overthink the situation. The calibration file for the microphone is a 90 degree calibration file...
Which means that it was measured at 90 degrees...
And is most accurate at 90 degrees. 0 degrees would be horizontal and 90 degrees vertical. Haven't found satisfactory information as to whether zero might be best for 2 channel systems while 90 degrees for surround and atmos. That's what I think anyways.... seems like most are going w/ 90 degrees regardless. |
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KeithL
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Post by KeithL on May 13, 2021 8:21:55 GMT -5
The microphone, and the calibration file that goes with it, are both intended to be used at 90 degrees. (So the results would be incorrect if you positioned it at 0 degrees.)
0 degrees would be horizontal and 90 degrees vertical. Haven't found satisfactory information as to whether zero might be best for 2 channel systems while 90 degrees for surround and atmos. That's what I think anyways.... seems like most are going w/ 90 degrees regardless. |
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Deleted
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Post by Deleted on May 13, 2021 9:19:57 GMT -5
Don't overthink the situation.
The calibration file for the microphone is a 90 degree calibration file...
Which means that it was measured at 90 degrees...
And is most accurate at 90 degrees.
0 degrees would be horizontal and 90 degrees vertical. Haven't found satisfactory information as to whether zero might be best for 2 channel systems while 90 degrees for surround and atmos. That's what I think anyways.... seems like most are going w/ 90 degrees regardless. Thanks, but my microphone has both zero and ninety degree calibration files. Positioning an omni directional microphone 90 degrees does make sense to me especially for taking reflections into account. I actually didn't realize that the UMIK-1 microphone was omnidirectional. Because so I had thought pointing a directional microphone towards the middle of the speakers in a stereo setup might be best in comparison to vertical. Makes sense and I thank you for chiming in Keith. William |
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Post by oleops on May 28, 2021 14:33:37 GMT -5
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Post by markc on May 30, 2021 7:52:48 GMT -5
I thought we had all just accepted that it would not be happening with this generation of processors?
Keith more or less said that without any of the usual hanging in the air possibility, even suggesting if you need it, to look elsewhere.
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