#41

They should be available for that kind of money. Real 2 is a pretty good option too.

Someone in your region should be able to help: providing you don’t want to have an aftercare package.

I’ll swap you a pair for a RHD S500 R129 in good condition :wink:

#42

It does exist for people with normal LF. I’ve got a couple of clients who can hear the noise floor. I can hear it when I’ve demoed aids.

I suspect it’s something to do with the bigger sampling bit-rates of the latest aids combined with the machined silicone mics that appear to be in use. Historically, electret mic noise was down to around 20dB. The biggest issue with silicone wafer mics was that they struggled to get the noise floor below 30dB due Brownian motion impacting the low mass/high sensitivity of the diaphragm.

Looking at the mics in use today, there’s been a workaround implemented. However, it’s possible that the efficacy of the workaround hasn’t been as good as originally expected or the rate of improvement of the sampling/widening of the input band has jumped ahead of the hardware in terms of sensitivity. However it could be the case that the other engineering benefits of these mics outweigh the noise floor issues.

The fact that Oticon do have this (hidden) adjustment in their software indicates to me that they know there’s an issue, but didn’t want to apply a cut in sensitivity across all users.

#43

The riddle is solved!
As i mentioned, if all else fails, i go to the extreme - i try to think :wink:
And if this fails too, i read the manual!

Had i read the data sheet for the more series thorough enough, i would have found a clear specification:
Equivalent input noise: Omni: 21db, Dir: 29db (ear-simultor)
So it’s specified, that the more’s have a permanent noise like a breeze or low whisper.

This corresponds to our discussion:
As a result of the sophisticated signal processing we have a noise (microphone, variable preamp (“MoreSound Amp”), conversion, quantisation) of 21db - and as mentioned, the directionality will add another 8db.

There ain’t no free lunch - we’ll have to accept the devices own noise in exchange for its excellent noise reduction.

(Nevertheless i have ordered my more1s today. It costs me a fortune, but its worth it)
(And i will order a NoahLink Wireless too).

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#44

A possible upside of the floor noise is that it can sometimes help with tinnitus.

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#45

This seems to be in line with what @Um_bongo was saying earlier about electret mics having a 20 dB floor noise.

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#46

The strange thing is that the floor noise is a lot ‘louder’ in my right ear compared to my left ear.

I don’t seem to notice it at all with my resounds…

#47

Update:
The noise is actually coming from the microphones (and the PreAmps).
When i find the time to watch (=stream) a complete feature of 90min on tv, afterwards the waterfall rushes back into my ears. The streamed film sound lacks the floor noise, but contains all the ambient sounds, so for a while i forgot how to fade it out.
Btw: although streamed sound has no “directionality”, the MoreSound Booster works nevertheless.

#48

That’s quite possible. It is easy to construct a “squelch” that silences the output, if it is below a certain level. The drawback is, that it cannot distinguish between noise and a low sound that you may want to hear (e.g. the rustling of a person coming up behind you).
This is a question of the manufacturers philosophy - oticon tries to show you everything - at the cost that you have to select yourself what is relevant.