Real Ear Measure

This study found 20-to 40% that REM is being done. I can find no bluetooth method…

20Q: Probe Mic Measures11

A discussion of the evidence for the use of probe mic, real ear measures in the fitting of hearing aids, with pitfalls, clinical tips and resources.

Since REM measures the actual sound produced by the reciver in the ear canal and since the receiver has no microphone, I can’t see how some bluetooth measurement could be accurate. As stated, REM uses tiny microphones placed in the earl canal and then the reciever is inserted. The microphones then pick up what the receivers are actually transmitting based on the acoustics of the ear canal. At best the so called “bluetooth” method can only be a guess.

I’ve had really ear measurements done where they put something in your and then put on the hearing aids and play a serious of sounds through them but the last time when i was set up with my current cros aids I don’t know if it was real ear measurements they hung something around my neck and then put the hearing aids in my ears and played a series of sounds through the hearing aids and then he did something on the computer and then played the sounds again and made some adjustments on the computer before finalising my programs.

If they don’t put microphones in your ear canal between the receiver and eardrum, then it is not REM. That said, I believe based on the many REM’s I’ve had, that they are wirelessly connected to your hearing aids, and adjust them while they are in your ears during the test. The basic process is to play the REM audio, measure it, and then adjust. Rinse and repeat until the measured curve matches the target curve.

My audiologist did “in situ testing” through my aids which was a separate tab on the software to REM. It may have been that. (Although you’d think they’d know it’s different and not call it REM?)

I think you may be mixing the fitting process with a fitting formula or prescription. The fitting formula or prescription is the correction gain that is considered necessary by the formula to give you a best fit. Kind of like an eyeglass prescription. Unlike eyeglass prescriptions, there are a number of standard prescription formulas used, and as well each manufacturer has their own flavour of one. See the examples below. SmartFit is Rexton’s proprietory formula. The others are standards. These examples are ones I simulated for my loss to try and evaluate which one may be most suitable. There are quite large differences between the fitting philosophy of each one.

REM is just the process of measuring the delivered gain in the ear canal. It can be used to verify any of the prescription formulas. REM is just the tool to check to see if the gain was as promised. REM should not change the prescription, just check that it is correct.

As my Audi puts it REM should only verify the out put matches what the fitting is set to.

After reading Sierra talking about 3 levels of REM a while ago I scheduled an appointment with my local Costco. Just got out.
New hearing test. Not bone. REM with probes in front of aids. Sit still and centered in front of the Aurical speaker. 3 levels. Nice. Some differences from 2-odd years ago. Although I didn’t valsalva moments before.
She didn’t kick me out after mentioning DIY.

I have no recollection of the different levels of gibberish speaking and the quick rising tone from the original fitting.

She overwrote what I had in there from my DIY efforts but kept the programs.

It’s a rather louder world now.

Thanks Sierra.

I remember it being discussed, but not in what specific post. The issue was whether a REM test was done at one sound level or three. I had reported that the fitter I go to at Costco does the REM at 50 dB, 65 dB, and 80 dB. This matches how fitting prescriptions are done to get compression.

I first noticed Sierra mentioning it here (member archive).

What the audiologist did was place the ReSound HA in my ears, which were linked to a computer program, then go to a specific decibel, and play a beep. She would ask if I heard the beep and I would say yes if I did and it appeared to me that she would set the decibel at some particular level. Sometimes the sound would be almost too soft to hear so l would tell her that and she would make it a little louder, but I could still hear the beep softly and then she would set it at some particular decibel. She did that to each ear individually at what seemed to be about 5 or so times. She did say it was specific to my ear canals and that it was REM.

In situ versus REM

Many of the new hearing aids offer a feature called in-situ audiology. It would seem to be a form of REM. What are the pluses and minuses of in-situ audiology?