Thread split from - Ak4499 noise at iv opamp output There are no specific hard limits of audibility. Existing published limits of audibility are estimates of the average limit of audibility for a population. That mean 50% of people are estimated to be able to hear below the limit, and 50% of people are estimated to not be able to hear below the limit.
And despite this distribution, there is still no human able to observe a bacterium (except one, maybe) without a microscope or the surface of the moon without a telescope. This is a logical fallacy.
Last edited:
And that is part of marketing.
How would one determine that?
Audiogram test by audiologist, self diagnose by whatever equipment on hand or just imagine what he/she is? 
They might be in the US in the UK however they are the upper and lower absolute limits at equal loudness in children under 18.
My best mates missus is an audiologist, she's done literally thousands of hearing tests of people of all ages. She's never tested anyone over 25 years old who can hear 20khz within 3db of what they can hear 15khz at.
My best mates missus is an audiologist, she's done literally thousands of hearing tests of people of all ages. She's never tested anyone over 25 years old who can hear 20khz within 3db of what they can hear 15khz at.
Well done, you've found a single web page with a typo. You won't find a single scientific paper to back that up, trust me I've looked at literally hundreds of auditory papers.
Shortly after birth the upper limit is 22khz by the time youre a year or so old its settled down to 20khz give or take a few hundred.
Shortly after birth the upper limit is 22khz by the time youre a year or so old its settled down to 20khz give or take a few hundred.
Not according to Sean Olive. I'll have to see if I can find his blog post where he says we don't know exactly how high some young people can hear.
However, as far as I'm concerned age related hearing loss is a red herring with respect to many issues that can be heard in dacs. Old people are not thus prevented from hearing IMD and other distortion and noise in the frequency range they can still hear.
In addition, I have shown I can sort single audio opamp buffers in order of distortion and do it double blind, which obviously involves hearing distortion at a very low level. I was not listening to anything over probably 12kHz to do that. The distortion was present in reproduced full range music. I do have some age related hearing loss at high frequencies which did not prevent hearing certain lower frequency distortion artifacts.
However, as far as I'm concerned age related hearing loss is a red herring with respect to many issues that can be heard in dacs. Old people are not thus prevented from hearing IMD and other distortion and noise in the frequency range they can still hear.
In addition, I have shown I can sort single audio opamp buffers in order of distortion and do it double blind, which obviously involves hearing distortion at a very low level. I was not listening to anything over probably 12kHz to do that. The distortion was present in reproduced full range music. I do have some age related hearing loss at high frequencies which did not prevent hearing certain lower frequency distortion artifacts.
Last edited:
one simple suggestion, just peal the big electrolyte caps (with a small knife scratch and than the plastic complete of) and than listen again...
At the end, you will peal all
Hp
I’m 55 and can’t hear anything past 14-15k, but yet my hearing has never been more precise? Is this training or is it compensation of a system compromised?
Maybe we just pay more attention as we get older, as in slowing down to smell the roses.
Whatever........figure it out, because as someone who can hear many of the things in audio reproduction that are supposedly inaudible (or below the threshold etc.) it’s really annoying to hear the constant ‘bias’ excuses.
There’s the lazy way out.....and then there’s people like mark who endure endless criticism trying to push through waste deep excrement to get answers.
Thanks, Mark
Maybe we just pay more attention as we get older, as in slowing down to smell the roses.
Whatever........figure it out, because as someone who can hear many of the things in audio reproduction that are supposedly inaudible (or below the threshold etc.) it’s really annoying to hear the constant ‘bias’ excuses.
There’s the lazy way out.....and then there’s people like mark who endure endless criticism trying to push through waste deep excrement to get answers.
Thanks, Mark
>Is this training?
I think it could be. I guarantee no one - no audiophile friend, no AD salesman, no colleague, no Papa - has sat me down with a hand full of op-amps and said "Now we're going to learn how to listen for distortion, starting with this dual 741..."
I think it would be a fun afternoon with Markw4 - see where I fall off the capability wagon to hear the difference.
The person-to-person dynamic range of human capability should not be underestimated. I'll never complete a triathlon in this lifetime; I'd drown 50 yards off shore!
I think it could be. I guarantee no one - no audiophile friend, no AD salesman, no colleague, no Papa - has sat me down with a hand full of op-amps and said "Now we're going to learn how to listen for distortion, starting with this dual 741..."
I think it would be a fun afternoon with Markw4 - see where I fall off the capability wagon to hear the difference.
The person-to-person dynamic range of human capability should not be underestimated. I'll never complete a triathlon in this lifetime; I'd drown 50 yards off shore!
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.