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PTLove

macrumors 6502
Original poster
Sep 12, 2014
430
690
I was running the Ear Fit Test on my AirPod Pro's with my iPhone connected to my Macbook and was noting down the debug output of the ear fit test. I received the following values for the different ear tip sizes:



Small:

default 19:56:17.523443-0400 tipsd DebugFitTest : Confidence Left : 18.238062

default 19:56:17.523478-0400 tipsd DebugFitTest : Coherence Left : 0.189787

default 19:56:17.523509-0400 tipsd DebugFitTest : Confidence Right : 18.811853

default 19:56:17.523540-0400 tipsd DebugFitTest : Coherence Right : 0.093913

default 19:56:17.523571-0400 tipsd DebugFitTest : SealMetricL input : 0.584566, 0.868680, 1.089067

default 19:56:17.523608-0400 tipsd DebugFitTest : SealMetricR input : 0.107608, 0.188816, 0.213338

default 19:56:17.523655-0400 tipsd DebugFitTest : SealMetricL -0.857422

default 19:56:17.523689-0400 tipsd DebugFitTest : SealMetricR -7.876040


Medium:

default 19:52:37.008796-0400 tipsd DebugFitTest : Confidence Left : 28.379044

default 19:52:37.008960-0400 tipsd DebugFitTest : Coherence Left : 0.124522

default 19:52:37.009130-0400 tipsd DebugFitTest : Confidence Right : 29.289803

default 19:52:37.009233-0400 tipsd DebugFitTest : Coherence Right : 0.100051

default 19:52:37.009340-0400 tipsd DebugFitTest : SealMetricL input : 0.998728, 1.269065, 1.102006

default 19:52:37.009558-0400 tipsd DebugFitTest : SealMetricR input : 0.744628, 0.979179, 0.867222

default 19:52:37.009670-0400 tipsd DebugFitTest : SealMetricL 0.483669

default 19:52:37.009716-0400 tipsd DebugFitTest : SealMetricR -0.663494


Large:

default 19:46:28.151298-0400 tipsd DebugFitTest : Confidence Left : 30.842684

default 19:46:28.151333-0400 tipsd DebugFitTest : Coherence Left : 0.159316

default 19:46:28.151370-0400 tipsd DebugFitTest : Confidence Right : 31.357981

default 19:46:28.151400-0400 tipsd DebugFitTest : Coherence Right : 0.101039

default 19:46:28.151436-0400 tipsd DebugFitTest : SealMetricL input : 5.224999, 4.307760, 2.787127

default 19:46:28.151472-0400 tipsd DebugFitTest : SealMetricR input : 4.812807, 3.183928, 2.234486

default 19:46:28.151503-0400 tipsd DebugFitTest : SealMetricL 5.991049

default 19:46:28.151546-0400 tipsd DebugFitTest : SealMetricR 5.114619


The last two values in each series - The SealMetricL/R, seem to be the 'final result' of the test. My question is - can anyone confirm what each means? As far as I can tell, you want the highest positive number. Negative always results in "Bad Fit" on the testscreen, whereas any number higher than around -2 seems to show 'good fit'. I think positive numbers are better as I was able to hold the airpid in my hand, closing all mic holes and the earcup, and received a value of 9.5, which I assume is around the maximum you can get.

Can someone confirm that the higher the number the better? Or for that matter confirm exactly what the numbers represent?
 
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