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 Replies: 48 / Views: 8,749 |
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Pillar of the Community
United States
917 Posts |
The standards should be left up to the person using it. Its to difficult to make a standard test for ever person. All I needed was 3 coins one pre 1982 one post 1982 and then the suspected coin.
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Bedrock of the Community
United States
20753 Posts |
Quote:
perform a ring test on a purported Chain Cent for a customer who had doubts about authenticity. The coin was indeed genuine and worth ~$10,000, the owner was quite the happy camper with Tom's decision.
AAAHHHHHHHHHHhhhhh.  And I was kidding. Quote:
What dimensions (especially thickness) and exact type type (you always say there are numerous types). Also, how is it to be supported? You know it matters! This And all kidding aside there are virtually hundreds of types of Stainless Steels. And yes the thickness, type, support systems would all create different sounds. And of course the Stainless Steels from China could not be used since no one knows what Stainless Steel means over there. I'm a little irritated about them with their knives. I have one here made in China, stamped as 440 Stainless and it is covered with rust. No staining though. |
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Moderator
 United States
188560 Posts |
I know you were kidding. Sometimes it is fun to play along.  |
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Bedrock of the Community
United States
17884 Posts |
I've used audacity for several years and I've never thought to use it for something like this. Great idea.
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Rest in Peace
 1988 Posts |
biokemist6, you make a good point about the tuning fork process, and it did serve it's purpose...But the average person would be had pressed to here the difference between 2 (same year) coins, if one was just a little different.
Coindog..Standardization can be achieved with little trouble..What I mean is I have been using my solid maple table for trials and seems to work out quite well...NOW, if everyone used a (just say) a piece of maple 6x6x1 inch...That may do the trick.
just carl...Dropping coins may cause a problem..Maybe balancing a coin on it's edge and letting it fall flat..?
Edited by wert
03/06/2012 8:44 pm
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Bedrock of the Community
United States
20753 Posts |
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...NOW, if everyone used a (just say) a piece of maple 6x6x1 inch...That may do the trick.
just carl...Dropping coins may cause a problem..Maybe balancing a coin on it's edge and letting it fall flat..?
And what would this piece of Maple sit on? Suspended above another table on legs? Sitting flat on a steel table? Glass table? Any and all may create different sounds by echos. As to balancing a coin on it's edge. Not to easy unless it has a bit of glue on it. And fall flat on what? Back to the Mable table?   |
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Bedrock of the Community
United States
17884 Posts |
There are two types of "standards" If you are just comparing spectrums of coins that you are testing then the only thing important is that you use the same equipment each time. If you are comparing a spectrum you made to one that someone else made then you may have a problem requiring that both spectrums be made the same way with the same equipment.
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Rest in Peace
1988 Posts |
Understood guys...Everyone is telling me it is a BAD idea...So guess what, I will just use it myself for analysing wrong planchets, fake coins, etc.....I tried to help out the community with a possible new tool, but got bad vibes from everyone...Post closed....  |
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Pillar of the Community
United States
1431 Posts |
I believe it does have it's uses, wert.
I seem to remember another thread discussing using this very program to differentiate between 50% and 80% silver Canadian dimes and quarters. Since the weight of the two alloys is essentially the same, one almost has to use a sound test to tell them apart.
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Bedrock of the Community
United States
12437 Posts |
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Everyone is telling me it is a BAD idea... Au contraire, mon ami! The scientist in me says that it is an EXCELLENT idea and I plan on downloading the software and putting it to good use. Until you posted this, I had no idea such a freeware application existed. I was aware of other audio engineer-quality programs that accomplish roughly the same task but they can be expensive and require specialized mics. |
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Rest in Peace
1988 Posts |
Thanks guys for the nice post...It is encouraging....
biokemist6...You might also what to try a program called JAAA...It also records sound and is a good analytical program...It is very simple to use.
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Moderator
United States
188560 Posts |
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I was aware of other audio engineer-quality programs that accomplish roughly the same task but they can be expensive and require specialized mics. I use Adobe Audition at work (not free). I also have Audacity loaded on my Linux boxes (free). I can tell you that there is very little that Audition can do that Audacity cannot (things that are of no concern here). |
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Rest in Peace
1988 Posts |
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I can tell you that there is very little that Audition can do that Audacity cannot Very true jbuckSince I only use Linux, I try to find (free) open source software for all my coin community friends that will work on their Windows and Mac machines...I am trying. Remember...Software like AUDACITY, and JAAA are only tools...If all else fails, maybe, (maybe) these can help after following all standard methods. |
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Bedrock of the Community
United States
17884 Posts |
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.Everyone is telling me it is a BAD idea.. NO no no it is NOT a bad idea! We are just worried about whether or not tests made by one person can be directly compared to another. One thing that would help would be to see multiple spectrums of the same coin dropped or rung on different surfaces to see how the different surfaces affect the spectrums. It may turn out that it doesn't affect it much at all. In that case person to person comparisons become much more likely. |
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Pillar of the Community
United States
2295 Posts |
That is a cool tool and an interesting analysis. I think your process has potential, since it isn't destructive to the coin. I don't think I would do it on a high grade BU coin though.  |
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Replies: 48 / Views: 8,749 |
First Page
Posted 03/06/2012 5:56 pm
