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08-20-2006, 09:03 PM
| | Registered User | | Join Date: Oct 2001 Location: Seattle | | | Quick hearing test
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Here's a simple, quick hearing test:
Find an old penny, from 1981 or earlier. Flip it - by smacking it with your thumbnail. It produces a "ringing" sound that's in the 12 to 13 kHz range. If all you here is the "thup" of it being struck, you're probably not hearing much above 10kHz.
The newer (zinc, not copper) pennies don't ring. I didn't realize how high the pitch of the copper ones was until I tried to demonstrate the difference to some friends. Two of them (both over 45) couldn't hear anything from either one. So I ran the sound through an analyzer.
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Taylor
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08-20-2006, 09:07 PM
| | Registered User | | Join Date: Aug 2005 Location: Fern Park, Florida | | Flip it off a table? flip it off your finger? flip it whilst on your finger?
Please instruct me on this test! 
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Rickenbacker - 279
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08-20-2006, 09:36 PM
|  | Funkify your Life | | Join Date: Apr 2005 Location: The Bucket, RI. | | Phew, I can hear it.
Cool trick, I would have never known. I had a 1964 and a 1985 penny. Quote: |
Originally Posted by FaithNoMan Flip it off a table? flip it off your finger? flip it whilst on your finger?
Please instruct me on this test! | Flip it into the air with your thumb like this. 
Sorry, best pic I could find.
Make sure you stick your tongue out or you wont be able to hear it. |
08-20-2006, 09:49 PM
|  | Registered User | | Join Date: Apr 2003 Location: Madison, NJ | | | I recall being able to hear it. I didn't realize that the newer pennies didn't ring. I knew they had different compositions, but never related that to ringing.
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- Timothy P. Lyons
Your Neighborhood Friendly Candyman
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08-20-2006, 09:57 PM
| | ...Bluesin' and Funkin' | | Join Date: Jul 2004 Location: Montreal, Quebec, Canada | | | I can hear it. What amazed me more was that I was able to find '80 MIA penny in my room.
Another good hearing test is to find a TV made in 1981 or earlier and turn it on. If you can hear the extremely high pitched sound, you're good.
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08-20-2006, 10:12 PM
| | Registered User | | Join Date: Apr 2003 Location: Madison, NJ | | Quote: |
Originally Posted by Jazzin' I can hear it. What amazed me more was that I was able to find '80 MIA penny in my room.
Another good hearing test is to find a TV made in 1981 or earlier and turn it on. If you can hear the extremely high pitched sound, you're good. | It's pretty bad when MIA comes into conversations about money too 
And yes, my old TV does that. Frankly, most computer monitors too. It drives me nuts!
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- Timothy P. Lyons
Your Neighborhood Friendly Candyman
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08-21-2006, 09:27 AM
| | Registered User | | Join Date: May 2004 Location: St. Louis, MO, U.S. | | | How about quarters, or basically anything other than a penny? The advange would be that even new quarter|dimes|nickels|dollars ring. Of course, I don't know at what pitch they do it.
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08-21-2006, 10:24 PM
| | Registered User | | Join Date: Nov 2005 Location: Sudbury, Canada | | Quote: |
Originally Posted by tplyons It's pretty bad when MIA comes into conversations about money too
And yes, my old TV does that. Frankly, most computer monitors too. It drives me nuts! | Yup, My old TV is the same, and actually, my new TV, from late last year does the same. It's in the basement. I can hear it from the second level, In my room. Two floors above. I must be real good!
It's actually making me crazy. 
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Originally Posted by MakiSupaStar  They also get laid too. That's the difference between old people and you. | Bassists with beards club # 136
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08-21-2006, 11:16 PM
| | Registered User | | Join Date: Jan 2005 Location: Lubbock, TX | | loud and clear 
every TV or crt monitor I've ever used makes that annoying high pitched whine. it drives me insane, especially when I'm really close like plugging something in, it's almost unbearable
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08-23-2006, 08:48 PM
| | Registered User | | Join Date: Dec 2002 Location: Sydney, Australia | | | OK put myself in a silent room, flipped a coin and I heard a ring. Then I turned on an old TV and I heard a ring. Then I turned the TV off I could still hear a ringing noise. I guess my hearing is brilliant!
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08-23-2006, 08:56 PM
| | Registered User | | Join Date: Aug 2004 Location: Adelaide, Australia | | Anyone seen this about the "mosquito" ringtone? http://www.ringtonesgalore.co.uk/enh...obiletonescom/
apparently only people under the age of 16 can hear it.
I hope it annoys them.....
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08-23-2006, 09:06 PM
| | Notes we play > Gear we play them on | | Join Date: Sep 2000 Location: Wisconsin | | | I can hear the penny ring in a room with a box fan on and rain in the background. What do I win? |
08-23-2006, 09:07 PM
| | Notes we play > Gear we play them on | | Join Date: Sep 2000 Location: Wisconsin | | Quote: |
Originally Posted by Peter Squire | I don't fit the demographic (24), but I can hear it. It's really annoying. |
08-23-2006, 09:53 PM
| | Registered User | | Join Date: Nov 2005 Location: Sudbury, Canada | | OWWW, those mosquito tones just about made my ears bleed!, I could hear them all, except the last one was a bit faded. My head is pounding now. ow. 
__________________ Quote:
Originally Posted by MakiSupaStar They also get laid too. That's the difference between old people and you. | Bassists with beards club # 136
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08-23-2006, 10:40 PM
| | Registered User | | Join Date: Aug 2004 Location: Adelaide, Australia | | | hehehe......young-uns!!
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Pete
Lefty Union Member #2
MM SR5
Fender Jazz '62RI
Ashdown ABM 400 c210T
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08-24-2006, 12:03 AM
| | Banned | | Join Date: Nov 2005 Location: Glendale & La Jolla, CA | | | It's not so much under 16 (FWIW I'm 16 and can hear it) but I think it sarts fading more when you hit 30+.
And I can hear up to 18.8kHz. And it hurts. |
08-24-2006, 12:20 AM
| | | | how many different tones are there in that mosquito thinjg? I only heard two... I hope thats all there was... |
08-24-2006, 12:20 AM
| | Registered User | | Join Date: Oct 2002 Location: Urbana, IL | | Quote: |
Originally Posted by steve21 It's not so much under 16 (FWIW I'm 16 and can hear it) but I think it sarts fading more when you hit 30+.
And I can hear up to 18.8kHz. And it hurts. | I can hear up to about 19.5KHz. I'm using a program called NCH Tone generator. Be sure to turn the volume down before you use it though, some of that high stuff is very piercing.
Oh, I just tested, and I don't know if it is my headphones rolloff, or my ears, but I am hearing things around 14.5Hz
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Last edited by Trevorus : 08-24-2006 at 12:25 AM.
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08-24-2006, 12:36 AM
| | | | i used audacity ( which goes up to 20KHz ) and I could hear at 14.5KHz, 18KHz, and 20KHz |
08-24-2006, 12:41 AM
| | Registered User | | Join Date: Oct 2002 Location: Urbana, IL | | Quote: |
Originally Posted by SOA_bassist i used audacity ( which goes up to 20KHz ) and I could hear at 14.5KHz, 18KHz, and 20KHz | I don't think audacity reproduces 20KHz quite right. It actually sounds lower than 14KHz. May be just the algorithm can't quite get it. Try downloading the NCH Tone Generator, and see if it's just my copy that's messed up.
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Last edited by Trevorus : 08-24-2006 at 12:48 AM.
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