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Frequency Response Match for Older Ears
Frequency Response Match for Older Ears
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Old 26th June 2020, 07:20 PM   #21
prairieboy is offline prairieboy  Canada
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Being somewhat hearing compromised myself, I wonder how, or if, I and persons with the same issue are effected by changes in volume? Do the Fletcher-Munson curves hold as true for us as a sixteen year old with 'perfect' hearing?
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Old 26th June 2020, 07:22 PM   #22
Pano is offline Pano  United States
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Frequency Response Match for Older Ears
Good question. There ought to be some research on that topic.
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Old 26th June 2020, 07:52 PM   #23
Galu is offline Galu  Scotland
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Originally Posted by Pano View Post
There ought to be some research on that topic.
Some research:

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Hyperacusis is a type of reduced tolerance for sound. People with hyperacusis often find ordinary noises too loud.

The most common cause of hyperacusis is damage to the inner ear from ageing or exposure to loud noise. Hyperacusis is often associated with tinnitus and distortion of sounds.
Hearing problems - hyperacusis - Better Health Channel
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Old 26th June 2020, 07:58 PM   #24
Galu is offline Galu  Scotland
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OK. Maybe that's a bit extreme!
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Old 26th June 2020, 08:01 PM   #25
Pano is offline Pano  United States
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Frequency Response Match for Older Ears
Thanks for the link, I just read it. I know the popping, as it happens to my right ear when running loud sine sweeps. Now I know why! Noise bothers me more than most people, but that's allways been the case.

Maybe you know of equal loudness charts for old codgers?
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Old 26th June 2020, 08:06 PM   #26
Galu is offline Galu  Scotland
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What about "Tolerance For Loud Sounds Decreases with Age"?

Tolerance For Loud Noises Decreases With Age | EurekAlert! Science News

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In a study comparing how young adults and senior citizens judge noise levels of rock music, Professor of Hearing and Speech Sciences Donald Fucci found that seniors rated rock music much higher on a loudness scale than younger people.
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As many people age, they develop a common hearing loss condition, called presbycusis, in which hearing gradually deteriorates and certain sounds become distorted.When older people lose the high frequencies, they hear a distortion. What they hear resembles sound from an Edison phonograph more than sound from a high-quality stereo.
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Old 26th June 2020, 08:28 PM   #27
Galu is offline Galu  Scotland
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Originally Posted by Pano View Post
Maybe you know of equal loudness charts for old codgers?
Try this link:

https://www.google.com/url?sa=t&rct=...BQu93qyzkFHb0M

Fig. 2 shows the comparison between young and older listeners. Much as you might expect.

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The older listener group was less sensitive to high-frequency tones of 4,000 Hz and higher than was the young listener group. The contours of older listeners show steady growth as the frequency increases above 1,000 Hz, whereas those of young listeners distinctly show a dip at 4,000 Hz. Second, the older listener group was apparently more sensitive to low-frequency tones of 250 Hz and below than was the young listener group.

Last edited by Galu; 26th June 2020 at 08:41 PM. Reason: Added more info'
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Old 26th June 2020, 09:35 PM   #28
prairieboy is offline prairieboy  Canada
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All interesting, thanks Galu. This proves, once again, that youth is wasted on the young.
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Old 26th June 2020, 10:10 PM   #29
Pano is offline Pano  United States
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Frequency Response Match for Older Ears
Good find - thanks! Wow those thresholds go up, don't they? And the 4K sensitivity takes a beatings.
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Old 26th June 2020, 10:16 PM   #30
diyiggy is offline diyiggy
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Originally Posted by analog_sa View Post
On the bright side you are now perfectly qualified for cap and wire denialism


But what's with the 60Hz? What makes you think you cannot hear lower frequencies?




I will make my ears measured by a ear specialist if I as the op and ask him - the specialist- what is needed for compensation - filter in mind ?-


Not being a specialist I'm not sure the last octave is a true lost, I will be more worried about notch frequencies (frequencies lost) below... Though HF is important for transcients and snaps but have no idea where is the limit needed !
Sibilance being around 6 k , triangle iirc between 6k to 8 k, I surmise transcient and snap needed for the speed feeling is up to 10 k hz max, but this is just a feeling and subjective thoughts.
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