Smyth Research Realiser A16
Nov 26, 2021 at 6:37 PM Post #12,827 of 15,987
I agree you’d be lucky if you got more than 70dB range from these tiny electrets, these aren’t 2kUSD a pop 1/2 inch electrostatic lab grade mics :).

Not sure how much that matters though. For instance, I use agressive reverb truncation on my prirs as I can’t stand the room echo imprint…
 
Nov 26, 2021 at 7:57 PM Post #12,828 of 15,987
I agree you’d be lucky if you got more than 70dB range from these tiny electrets, these aren’t 2kUSD a pop 1/2 inch electrostatic lab grade mics :).

Not sure how much that matters though. For instance, I use agressive reverb truncation on my prirs as I can’t stand the room echo imprint…
Per the Smyth instructional video Advanced Part 4: Assessing the Quality of a PRIR intra-measurement.

From 2:42 "IRVR is the late reverb SNR" and "IPER is the pre-onset SNR" Then at 2:43 "IRVR of 80-110 is typical for full bandwith speakers" and "An IPER of 60-85 is typical for full bandwith speakers."

I was there, no question every IRVR exceed 90 db, and one even exceeded 100 db.

In the Smyth video they attained an IRVR of 99db. Tells you how well the A16 with its current mics can capture reverb in a good environment.

Jeesh.
 
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Nov 26, 2021 at 9:32 PM Post #12,829 of 15,987
In the Smyth video they attained an IRVR of 99db. Tells you how well the A16 with its current mics can capture reverb in a good environment.
I think these numbers are not the same as the actual SNR of the mics, and the way things are measured and processed make it possible to exceed the SNR of the mics. This also is somehow related to the fact that longer sweeps can give better results.
Nevertheless, if @Litlgi74 gets better results in the studio than people at home: excellent.
 
Nov 26, 2021 at 10:15 PM Post #12,830 of 15,987
I think these numbers are not the same as the actual SNR of the mics, and the way things are measured and processed make it possible to exceed the SNR of the mics. This also is somehow related to the fact that longer sweeps can give better results.
Nevertheless, if @Litlgi74 gets better results in the studio than people at home: excellent.
Again, I didn't bring up the SNR of the Mics. Just the reported SNR from the Realizer observed in real time during the measurement process. And if it's reporting the capture of the most nuanced part of the signal (reverberant tails) out to the 90's, you can be sure you're getting an excellent capture. And if it's a good room acoustically, no need to truncate them and lose those all important spatial cues.

Makes me think that reverb truncation was done on a lot of those lifeless PRIRs I downloaded from the Google drive.
 
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Nov 27, 2021 at 2:06 AM Post #12,831 of 15,987
Not that it’s much use to beat this to death (I personally have no issue whatsoever with the PRIRs I made in regards to background noise or DR) but, indeed, a small capsule may actually not be DR limited vs a larger capsule so I should stand corrected :wink:

https://www.grasacoustics.com/microphone-guide/dynamic-range
 
Nov 28, 2021 at 1:10 PM Post #12,833 of 15,987
Nov 30, 2021 at 8:07 AM Post #12,837 of 15,987
Interesting, hope the Smyth's don't have plans for the Realiser that would infringe this patent. I bet what they are doing/will do is just an automatic manLoud process, so basically just EQ, which is not really magic.

I actually wonder if Apple ever tried to acquire Smyth Research, they seem to do that quite often with smaller, specialised companies. Maybe the other Smyth brother (forgot his name) now works at Apple, who knows :)
 
Nov 30, 2021 at 8:14 AM Post #12,838 of 15,987
Interesting, hope the Smyth's don't have plans for the Realiser that would infringe this patent. I bet what they are doing/will do is just an automatic manLoud process, so basically just EQ, which is not really magic.

I actually wonder if Apple ever tried to acquire Smyth Research, they seem to do that quite often with smaller, specialised companies. Maybe the other Smyth brother (forgot his name) now works at Apple, who knows :)
They're speaking of parameters: "When enough of the underlying parameters of the generic HRTF are personalized, the composite HRTF dataset should be indistinguishable from a measurement of the individualized HRTF of the user."
Seems to be more than just eq
 
Nov 30, 2021 at 8:17 AM Post #12,839 of 15,987
Interesting, hope the Smyth's don't have plans for the Realiser that would infringe this patent. I bet what they are doing/will do is just an automatic manLoud process, so basically just EQ, which is not really magic.

I actually wonder if Apple ever tried to acquire Smyth Research, they seem to do that quite often with smaller, specialised companies. Maybe the other Smyth brother (forgot his name) now works at Apple, who knows :)
I rather think that Smyth Research was at least one step ahead of apple. So I don’t see what patent infringement Smyth Research might do.
 

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