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From what I see for the delay actual hearing aid are doing a good job on the delay part.
You’d think that. The numbers they give you look pretty good on their face. But when you actually look at the biology. . . my personal gap detection threshold is under 2ms.
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I understand that school of thought is held by a significant % of audiologists and might be good for business. It’s unlikely to be good for optimized hearing & brain function, tho. As for my audi & I, she started me off < 100% of prescription to let me adjust and went down from there. Yes, I complained of sibilance & other sounds that I found irritating/loud. I also advised that I wanted to get to full prescription/increased dbs before long. encouraged (aka chastised 
) me to go 100% or more & get used to the renewed sounds. Once my audi and her colleagues were out of ideas, I instructed her to go to 100%. She committed to do so. Then she changed her mind, tried other adjustments, and didn’t tell me. So the trust I place in her is conditional, at most. To offer balance… she’s extremely responsive, prompt, persistent & generally a sweetheart. She’s worthy of very limited trust after not keeping her word, tho.
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I get what you’re saying but what if the patient’s response to being educated that their brain should adjust is not to come back and put the hearing aids in a drawer?
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Weird, I’d thought I’d responded to this but it must not have gone though.
Just literal gap detection. Within tone is usually shorter than between tone (i.e. a gap between two 500 Hz tones versus a gap between a 500 and 600 Hz tone). Forced choice “is there a gap here or is there not a gap”? and then psychometric staircase to 50% correct. I have a little program in R somewhere on an old hard drive, and possibly python too if you’re into that stuff. To be fair I also basically had 16 hours of ear training while I was writing up the program, but most people have thresholds under 10 ms. Children are worse and develop over time. In the auditory processing world, more than 20 ms gap detection is considered disordered and hearing aids aren’t that good, IIRC.
For interest, frequency acuity in a normal hearing human can also be ~1 Hz. Interaural timing differences can be detected down to 10 μs in some settings. Both timing and frequency acuity are damaged by hearing loss, with more severe hearing losses being associated with worse acuity with some variability (probably for etiology of the hearing loss, i.e. damage to the cochlea beyond just outter hair cells).
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Which bangs the drum for fitting in every case, for localisation, directional hearing in noise and obviously stereo summation.
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A somewhat similar exam to SISI, but focusing on different sound characteristics. Thanks for explaining, I though earlier about things like latency in or so.
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This was a quite probable indication for a custom earmold, not universal solutions like domes. Put your finger about 1 cm deep into the ear canal and try to feel the movement of the head of the temporomandibular joint.
What fitting solution(s) might be offered for this TMJ issue?
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I don’t know; it is highly individual. Theoretically, domes give the possibility of pushing deeper than the pocket problem, but, as you have experienced for yourself, it isn’t good for you due to different causes.
I think a deeply placed canal mold, ideally placed past the second bend of the ear canal, could be the most optimal solution.
EDIT:
There is still a way to make an impression on the earmold when the patient has his mouth open all the time until Audi pulls it out .
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Are you saying that you get used to the cheap transistor radio sound? Asking because I have been trialing my 9050 for 5 months. Almost at the end of my trial period and I still experience the kazoo sound or like listening to a bad speaker. I feel very discouraged. Could it be defective hearing aids or is this my lot for aids?
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I suspect it depends on multiple factors. If it’s related to just getting used to hearing high frequency sounds one wasn’t used to hearing, I would think most people would get used to it. I suspect nature of the hearing loss and faults in the hearing aid could also contribute. Posting your would allow others to have a better feel for your hearing loss. (Top of page, click on your icon, click on bell, click on “my audiogram”) Is it both ears? Does turning the hearing aid volume down help? Does plugging your ears with hearing aids in help? What kind of things has hearing aid fitter tried?
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None of us can know what you are hearing … but my aids do not sound like a kazoo.
My aids do give me the high frequency sound that I have been missing for most of my life, and it took a while for my brain to learn to hear again.
Like MDB said, your could help us understand more of your problem .
If I were you I would trial a different aid … the new Jabra pro 30 would be my choice to try.
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Asking because I have been trialing my 9050 for 5 months.
Are you wearing your aids all day?
As mentioned, if you have had a hearing loss for a long time and you get new or properly fit aids that bring new sounds to your hearing loss it takes time for your brain to figure these new sounds out. This time can vary pending on the time without sounds and hearing loss.
Your concerns about these aids needs to be shared with your Costco fitter.
Sharing your will help us help you.
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I hear the broken speaker sound in my left ear.
It’s not the aids it’s my ear.
So the question is, do you notice it without the aids at all?
There is no aid in the world that is going to make the broken speaker sound go away for me.
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I have a mild to moderate hearing loss. I will try to figure out how to post my test. I did not have loss long before I started using aids. The kazoo sound is not just related to high sounds. It seems more related to the intensity of speech ie emphasis on certain words as some people speak. Does not happen with everyone but often enough to be annoying and bad enough that it makes understanding difficult. Doesn’t happen with my husband for instance. There is a bit of the left over sound with Ss but the kazoo is different. Don’t know if it is related but streaming music or listening to my phone is MUCH improved and clear if I press the dome into my canal and hold as I’m listening. Since I am new to aids, I am learning how to describe what I hear. I only know that they have tried adjustments, changing domes and lowering volume. Lowering volume helps but trade off is missing sounds. I have small ear canals. It is both ears. I also believe it is worse now than it was when I first got them. Thanks for taking the time to help.
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I suppose this is (mostly) Widex’ call, working with my audi, but I’m trying to imagine what their strategy might be. So mouth/jaw position for a mold…or some other allowance for the TMJ in molding… is a possibility. How about soft mold material (rather than the hard ones I have), or “thermoflexible” material which Penzance99 mentioned having in post 46?
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As GrayGhost mentioned, have you trialed any other aids for comparison purposes over your 5 months of aided hearing. In my case my audi loaned me Oticons to compare to my Widex’. The sound was very similar in general and the complaints I had while listening to specific songs & comparing were the same. After that I was pretty confident I didn’t have defective .
Through nearly 6 months of struggle…I have found streamed sound to be (mostly) very good, sound from speakers to finally be good (at times with my new earmolds in the right position), and can ‘hear the potential’ these HAs have at times. Apparently I have anatomical abnormalities that present a fitting challenge, but I don’t believe we’ve been relegated to “cheap transistor radio sound” permanently.
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It seems you might be encountering an issue with your hearing aids where “s” sounds are being perceived as “sh” sounds, sometimes referred to as sibilance
.
https://www.google.com/search?client=firefox-b-1-d&q=silbrance+in+hearing+aid8
click on the search icon in the upper right (Magnifying glass ) and type in “sibilance”
this video might be of help to you also:
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The fact that pushing the mold in helps a lot is a significant clue. Sounds like you might be leaking low frequency sounds or perhaps some sort of vibration gets going if the domes aren’t deeply seated?
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No, I do not hear the sound without aids. In fact I hear pretty well without aids but do need them or I miss some things.
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