pogo
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Dirac releases his own validation tool, as REW is probably not effective for co-optimization measurements.
It's really a gamechanger
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NAD M66 - finally someone makes a decent 2-channel preamp!
- Thread starter jhaider
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It's really a gamechanger
I think you misunderstand me. I'm not talking about using REW to validate any specific corrections, but rather globally.Dirac releases his own validation tool, as REW is probably not effective for co-optimization measurements.
It's really a gamechanger
As in, take a REW sweep before running correction, perform Dirac (or any system it is irrelevant), then take a REW sweep after. And compare.
I would (and do) that basic process as a means to objectively check globally how successful any correction has been.
When using REW to simply validate how successful a correction has or hasn't been, is very valuable. For example I always found Audyssey on my old AVR to make a terrible job of the crossover region between subs and mains. REW can validate this very easily.
Dirac may provide tools, but that's also like marking your own homework remember
REW before and after is a very simple, quick, and largely idiot proof workflow just to validate things. I am certainly not talking about using REW here to calculate anything (although I do that very successfully for SquezeDSP's PEQ filters, but that is a different convo entirely!).
pogo
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You cannot validate a co-optimization with a standard stimulus under REW. Different positions must also be taken into account. Let's see what Dirac has in store for us in the future
Of course, your approach works with the usual room corrections, but here we are dealing with a new technology!
Of course, your approach works with the usual room corrections, but here we are dealing with a new technology!
Nocko!
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Thank you for your explanations. I don't want to take the thread away from the actual topic here, but for me BluOS was already dead when it couldn't even display all of my covers (too large!). And I still don't understand how you can display lyrics in the app. But I have to admit that BluOS is technically more accessible and does not require any additional hardware.
- Sorry for being off topic -
Nocko!
Bought the M66 in April and have been loving it. However, I had a hardware issue in which the inputs would no longer work. Sent it back and got a new one
Now, the new M66 will not update firmware from 4.2.105 which was installed on the new player. Anyone have this issue? I am familiar on how updates are supposed to go as I had couple to install on my old M66. The new M66 just reports back there are no new updates (both on the actual machine and when trying to update from iOS or MacOS blusound apps). My old M66 was up to date at 4.4.1.1
NAD support crew says that all updates are on hold and that is why I cannot update. They say I just have to wait until a supposed problem with 4.4.1.1 and 4.4.1.2 are resolved. See screenshots below
Now, the new M66 will not update firmware from 4.2.105 which was installed on the new player. Anyone have this issue? I am familiar on how updates are supposed to go as I had couple to install on my old M66. The new M66 just reports back there are no new updates (both on the actual machine and when trying to update from iOS or MacOS blusound apps). My old M66 was up to date at 4.4.1.1
NAD support crew says that all updates are on hold and that is why I cannot update. They say I just have to wait until a supposed problem with 4.4.1.1 and 4.4.1.2 are resolved. See screenshots below
Irrelevant, I can put a microphone in my primary (and only) listening position and check the frequency response - new technology it may be, but it hasn't fundamentally changed how our ears work. Technology is a means to an end only.You cannot validate a co-optimization with a standard stimulus under REW. Different positions must also be taken into account. Let's see what Dirac has in store for us in the future
Of course, your approach works with the usual room corrections, but here we are dealing with a new technology!
As they say in racing, the BS stops when the flag drops: - correction can be as technically advanced as it wants in the process, but the goal is simple, a good frequency response at the listening position is simplest objective of any correction software, period.
pogo
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The stimuli under REW is a quasi steady-state test signal. Music consists of very dynamic processes and co-optimization intervenes before an acoustic problem can become apparent. You can create identical frequency responses that sound different at the listening position. There are other factors at play here.
I am curious to see what verification/validation solution Dirac will come up with.
I am curious to see what verification/validation solution Dirac will come up with.
This sounds analogous to the counter arguments against the very testing on this site, "oh but even a multi-tone isn't real music".... personally I think basic principals be it a linear voltage plot or a linear frequency sweep, are fundamental and won't go away from being a key validation test. We'll have to agree to disagree (as per usual!) on this one also.
Pulled the trigger today on the M66 - the Norwegian distributor is running a «Bytt til nytt»-deal («Exchange for new») through the summer with 20% off. Had an old Cambridge integrated lying around that I traded in, so this saved me NOK 13k (USD 1200). Yay! Could have gotten an even better deal on the in-store demo-model, but decided to go for a brand new one. Looking forward to set this up in three weeks time.
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