FYI: There's Life Above 20 Kilohertz!
There's life above 20 kilohertz! A survey of musical instrument spectra to 102.4 kHz
There's life above 20 kilohertz! A survey of musical instrument spectra to 102.4 kHz
There's Life Above 20 Kilohertz!
- Thread starter msagar
- Start date
Audiodoc
Well-Known Member
As a doctor I can comment that the instrument may go to higher frequencies but the human auditory system cannot perceive beyond 20 kHz however with age the hair cells within our cochlea responsible for detecting higher frequencies reduce in number and efficiency so by the time you are an adult the upper limit has come down to 18 kHz add a few decades and it is down to 15 kHz. So you may have a speaker setup producing 100 kHz the higher frequencies will be only disturbing the bats in your neighbourhood.
iaudio
Well-Known Member
I have tried test tones and I cant hear anything above 16khz!
Do one thing. Get a sine test pattern at or above 20khz and play it. Tell us if you can hear it and then we can discuss.
anm
Well-Known Member
hmm can I have something to drive away the stray dogs? They are very aggressive and day before yesterday when I went for a morning walk, they almost attacked me.
square_wave
Well-Known Member
Alpha,
I do not know the specific condition of your ears. Do have this problem when you attend live music (un amplified) ? Or in normal life when you listen to ambient sounds.
If not, then the problem is with the system and not with your ears. Most music systems sound distorted in the high frequencies.
The source is one of the biggest culprits behind bleached, distorted highs followed by speakers.
At low sound levels?
Distortion is easily audible at higher frequencies ...
Its just that I don't like that spectrum.
Neither pure sine waves, nor any music.
And nor speakers or amps that try to boost the high end to sound "high-end"
Distortion is easily audible at higher frequencies ...
Its just that I don't like that spectrum.
Neither pure sine waves, nor any music.
And nor speakers or amps that try to boost the high end to sound "high-end"
This 'super power' may come in handy if you live near vampire bats
A Dog Whistle or dog repellent is what you need.
Could be listening fatigue. I faced this issue before, don't listen to your system for 2 weeks and then see if you still have this problem.
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There is an interesting mobile application available for Android phones.
The application name is "Test your hearing".
It plays some sounds in different frequencies and asks you whether you can here or not. And based on many of these questions it will analyze your hearing range (frequencies). You cannot bluff it because it asks you some false questions intentionally
It is useful to know our hearing levels (upto what frequency we can hear) before putting our money on some high end (upgrades) just for a high frequency extension.:lol:
The application name is "Test your hearing".
It plays some sounds in different frequencies and asks you whether you can here or not. And based on many of these questions it will analyze your hearing range (frequencies). You cannot bluff it because it asks you some false questions intentionally
It is useful to know our hearing levels (upto what frequency we can hear) before putting our money on some high end (upgrades) just for a high frequency extension.:lol:
FYI Definition / FYI Means
The definition of FYI is "For Your Information"
What does FYI mean? - FYI Definition - Meaning of FYI - InternetSlang.com
Thad E Ginathom
Well-Known Member
It's hardly surprising that instruments produce such sounds (or "energies"). Nobody told the designers about the range of human hearing. Nobody told the birds to watch out what they sing, and not to go too high. Nobody mentioned to the bats that we might even be interested in the noises they make.
For all we know, the sound of our footsteps might go beyond audible range. We wouldn't know; we can't hear it. The world is not all about what humans can hear, and what they can't.
But should we shut the door on the possibility of ultrasonic sounds having any effect on our perception? Perhaps not
Perhaps even hifi manufacturers are going to have a problem with a marketing line that goes, "Look at these brainwaves: You may not hear the difference, but your brain can!"
But let the serious, objective research continue. The more the better. It can only benefit human knowledge, maybe medicine, and, ultimately ...perhaps hifi!
Audiodoc
Well-Known Member
I want to add here that even if there may be an effect on brain waves that does not qualify as hearing. It may be called feeling. Similar, but more prominent, is the effect of subsonic sounds 1 to 20 hertz which one can't hear but you feel the thump. Imaging the effect of a lions roar.
Sir, do the lower range of hearing increase with age too or is 20hz written in stone?
Audiodoc
Well-Known Member
In the human body nothing is written in stone though there are different hair cells for different frequencies.
Low frequency sounds have high amplitude can cause hearing loss e.g. An explosion due to damage of then tympanic membrane.
You can check this out,
Auditory system - Wikipedia, the free encyclopedia
Low frequency sounds have high amplitude can cause hearing loss e.g. An explosion due to damage of then tympanic membrane.
You can check this out,
Auditory system - Wikipedia, the free encyclopedia
If you are able to find a solution for this my wife will be happy too, as she also is been shooed away by stray dogs during her morning walks and always keeps on asking me for a solution. May be i can see a market here to scare away the dogs using ultrasound techniques. Is any venture capitalist reading this.
Thank you for bringing to my attention what FYI means. Did not knew what that means.
Even 1000x thanks to explaining that there is life above 20 khz. I thought the nos had stopped at 20 khz itself. Now I am quite wiser.
esanthosh
Well-Known Member
@AudioDoc,
I posted a doubt in TE. How is it that I am now satisfied with a lower volume? Since measuring IEM output with SPL meter is not exactly easy, I am not sure how much the reduction in volume translates into SPL in dBC. Can our brain adapt to lower hearing volumes over time? Or could other factors be at play (like I am inserting IEMs deeper than before thanks to practice with Etymotic Tri-flanges or as someone called them on head-fi, Etyrapic)? I can rule out ear wax though
I posted a doubt in TE. How is it that I am now satisfied with a lower volume? Since measuring IEM output with SPL meter is not exactly easy, I am not sure how much the reduction in volume translates into SPL in dBC. Can our brain adapt to lower hearing volumes over time? Or could other factors be at play (like I am inserting IEMs deeper than before thanks to practice with Etymotic Tri-flanges or as someone called them on head-fi, Etyrapic)? I can rule out ear wax though
Thad E Ginathom
Well-Known Member
Better exclusion of other sounds?
Try the dynamic range tests at Blind Listening Tests. There are various tests there that might be very useful to you when comparing and evaluating 'phones.
Others may take the tests there to prove to themselves, if they are in any doubt, that they are not bats.
Try the dynamic range tests at Blind Listening Tests. There are various tests there that might be very useful to you when comparing and evaluating 'phones.
Others may take the tests there to prove to themselves, if they are in any doubt, that they are not bats.
Purchase the Audiolab 6000A Integrated Amplifier at a special offer price.
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