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Smaart 7 measurement delay limit?
Hayden J. Nebus:
Anyone know how much receive delay you can put on a Transfer measurement channel is smaart7?
I'm on windows with 8Gb RAM if it matters. This would be a electronic, not acoustic, measurement of two asynchronous, nominally coherent sources.
Just for grins a colleague in the R/E/P side of the biz wants to compare a few mastered wavs to some QC test pressings from the record plant. Only challenge I could think of is that it's a tall order to precisely time a needle drop.
Erik Jerde:
If my memory serves I believe you can use wav files in smaart. Why not just record the output then line up and compare?
Mac Kerr:
--- Quote from: Erik Jerde on August 11, 2017, 12:23:37 PM ---If my memory serves I believe you can use wav files in smaart. Why not just record the output then line up and compare?
--- End quote ---
^^^This^^^ You're going to have an AD conversion anyway to get into Smaart, why not just make it at the recording stage. Compare the 2 recordings. You will still have the needle drop and all the other vinyl artifacts.
Mac
Hayden J. Nebus:
--- Quote from: Erik Jerde on August 11, 2017, 12:23:37 PM ---If my memory serves I believe you can use wav files in smaart. Why not just record the output then line up and compare?
--- End quote ---
Because I'm looking to blow an afternoon, not a week :-)
Another consideration is that the device under test is a system containing the playback rig as much as the plant, with a transducer and filter network at each end.
I was thinking a couple of preamps and a handful of cartridges would produce a decent set of data that could be collected fairly quickly in near real-time.
Mark Wilkinson:
--- Quote from: Hayden J. Nebus on August 11, 2017, 05:45:14 PM ---Because I'm looking to blow an afternoon, not a week :-)
Another consideration is that the device under test is a system containing the playback rig as much as the plant, with a transducer and filter network at each end.
I was thinking a couple of preamps and a handful of cartridges would produce a decent set of data that could be collected fairly quickly in near real-time.
--- End quote ---
According to manual, the default FFT size 64K, is good for about 440ms. If you increased FFT to the max 512K, that should be good to about 3.5 sec.
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