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Can Someone Explain Fitting Curves?

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Can someone explain what the various curves on the graph above mean? On the first one which uses the Rexton SmartFit Power for a formula, lets take the 2 kHz line for an example. From the top down when you mouse over the various curves I see the following:

Thin Blue - Target Curve: 50
Dashed black - Hearing Instrument: 50 dB
Solid Black - Hearing Instrument: 65 B
Thick Blue - Target Curve: 65 dB
Dashed black - Hearing Instrument 80 dB
Thin Blue - Target Curve: 80 dB

Then there is the gray are which displays as VC Range - What is the significance of this area?

And the second part of the question is what is the significance of the fitting formula fitting within the gray area? The forumula fit seems to create a broad grey area and the curve seems to follow a gain that is somewhat independent of my loss curve.

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I’ll try. I think the gray area is the area within the volume controls would allow you adjust (assuming they set you up with volume control) Otherwise SmartFit and represent two different approaches. SmartFit is aimed at initial acceptance. NAL-NL2 is a research backed approach that is demonstrated to promote speech understanding.

Target curve is what the “formula” suggests and instrument curve is what it predicts the instrument will supply.

Bringing back an old thread, but just wanted to point out that Sivantos seems to have changed their SmartFit Target method with the Connexx 9 software. Here is what the Connexx 8.5 target looks like for Connexx 8.5 SmartFit Power, compared to Connexx 9. Same left ear. It looks like they have smoothed out the curve more like and actually became more aggressive with gain.

I think someone that had the 8.5 SmartFit Power target curve, and came back to be refitted when Connexx 9 was being used, would get a bit of a shock!

Connexx 8.5

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Connexx 9

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Hi @Sierra,
Today I was looking for documentation about the curves and found this very interesting. Thank you!
I hope to find some video on Youtube.

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