Forums
New posts
Search forums
What's new
New posts
Latest activity
Members
Registered members
Current visitors
Charts
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Gold Prospecting
Metal Detecting for Gold
Gold detecting and listening and hearing faint signals
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Help Support Prospecting Australia:
This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
Message
<blockquote data-quote="Guest" data-source="post: 516751"><p>G'day</p><p></p><p>I did look into the phenomenon of digging target signals that you can perceive but cant really hear some time back but forgot about it all until now, these are called infrasounds and are below what was considered the lower end of human hearing range of 20Hz, the normal range of a human hearing they thought was 20Hz to 20kHz, but research has shown that in some cases we can hear below the 20 Hz range, research still continues and it involves things like people being effected by low frequency sounds that are produced by wind farms at the low end of 16Hz, many animals also communicate with low frequency sound like elephants.</p><p></p><p>Most of these low sounds we are probably hearing all the time but don't readily recognize what they are or where they are coming from, but if you sometimes feel agitated and uncomfortable in a place for no apparent reason then its probably due to these low frequency sounds, as we get older we lose our ability to hear the higher frequencies, and I know in my own case that is correct as the missus uses 19 kHz which I cant hear anymore, but as we lose our ability to hear the higher frequencies maybe our perceptiveness to the lower frequencies might improve to help compensate for the high end loss?</p><p></p><p><a href="https://www.ncbi.nlm.nih.gov/pubmed/15273023" target="_blank">https://www.ncbi.nlm.nih.gov/pubmed/15273023</a></p><p></p><p>cheers</p><p></p><p>stayyerAU</p></blockquote><p></p>
[QUOTE="Guest, post: 516751"] G'day I did look into the phenomenon of digging target signals that you can perceive but cant really hear some time back but forgot about it all until now, these are called infrasounds and are below what was considered the lower end of human hearing range of 20Hz, the normal range of a human hearing they thought was 20Hz to 20kHz, but research has shown that in some cases we can hear below the 20 Hz range, research still continues and it involves things like people being effected by low frequency sounds that are produced by wind farms at the low end of 16Hz, many animals also communicate with low frequency sound like elephants. Most of these low sounds we are probably hearing all the time but don't readily recognize what they are or where they are coming from, but if you sometimes feel agitated and uncomfortable in a place for no apparent reason then its probably due to these low frequency sounds, as we get older we lose our ability to hear the higher frequencies, and I know in my own case that is correct as the missus uses 19 kHz which I cant hear anymore, but as we lose our ability to hear the higher frequencies maybe our perceptiveness to the lower frequencies might improve to help compensate for the high end loss? [url]https://www.ncbi.nlm.nih.gov/pubmed/15273023[/url] cheers stayyerAU [/QUOTE]
Verification
Post reply
Gold Prospecting
Metal Detecting for Gold
Gold detecting and listening and hearing faint signals
Top