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Old 26th May 2013, 11:41 PM   #91
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I could convince myself that any one of those are the originals.

This is with Laptop > usb soundcard (cheap but half-decent) > Behringer CX2310 > Samson Servo 240 > Behringer B2031P
... plus subwoofers.


Is it worth trying a couple of other tracks through these, er, interconnects?

I'd quite like to hear this:
Morphine - Buena - YouTube
Where there's a bit more going on.

Chris
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Old 27th May 2013, 02:44 AM   #92
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Chris, you're in luck. I have that Morphine CD already ripped to hard drive, so could do that track for you. Alas I'll be too busy to do so until late in the week. But look for it before next weekend.
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Old 27th May 2013, 08:09 AM   #93
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I listened to the mp3 files yesterday night through PC speakers. I couldn’t spot any difference.

Today, first think after waking up, before coffee, was listening to the flac files through AKG240 headphones.
Initially I said A,D,C,B in terms of presence.
After the second listening, I wasn’t sure for the order of difference.
Then I listened to them many times in random order. I can’t say there is a difference, let alone any order.
The more I listen to them, the more I can’t tell one from the other (except through the glitch on D)

I knew that radio amateurs were using trees as efficient antennas.
Thank you Pano for the audio experience.

George
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Old 27th May 2013, 09:08 AM   #94
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Quote:
Originally Posted by gpapag View Post
I knew that radio amateurs were using trees as efficient antennas.
A quote from the documented origin of the idea (*)
http://w5jgv.com/tree_antenna/George...a%20Patent.pdf

Quote:
“A dead tree will not do, and a tree not in leaf is not so sensitive as one in full foliage…it
makes no difference that amounts to anything whether the tree be just an ordinary tree or a
giant
it receives better in dry clear weather than in muggy, damp weather.
It is affected not at all by the presence of other trees;

British Patent Specification # 149,917
More particularly, the invention relates to radio transmission and reception through the use of living vegetable organisms such as trees, plants, and the like.”
(*)Here for a more recent study:
http://w5jgv.com/tree_antenna/1975%2...20antennas.pdf




Quote:
Originally Posted by vacuphile View Post
Come to think of it, this is even stranger than I thought.

I don't know how to Google this and I never thought about it before, but there is a fundamentally different kind of electron flow going on than in normal conductors. No free electrons here. The transport must be ionic.

I would never have guessed that the propagation speed in ionic transport would be high enough for audio, altough I am sure someone must have measured it sometime.


Edit: what I mean with propagation speed is that two electro-chemical reactions need to take place at both cathode and anode, the electrons flow through the circuit, this goes fast enough :-)
Spot on. Different conduction mechanisms. Molecular wire - Wikipedia, the free encyclopedia

Can a chemist pop in please?

George
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Last edited by gpapag; 27th May 2013 at 09:24 AM.
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Old 27th May 2013, 11:10 PM   #95
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That's cool stuff George. Thanks for posting it, would be fun to try.
I was going to connect the signal to two plants and try to get it across, now I know it's worth a try.
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Old 28th May 2013, 05:46 PM   #96
gpapag is offline gpapag  Greece
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For audio frequencies, I think that organic conductors can be studied by performing impedance scans. Dielectric spectroscopy - Wikipedia, the free encyclopedia

Many of the different conduction mechanisms are represented by different standard models. See here
EIS Spectrum Analyser


For advanced analysis:
Potentiodynamic Electrochemical Impedance Spectroscopy

George
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Old 28th May 2013, 05:56 PM   #97
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There's all sorts of ways that charge is transported in solids (including polarons and solitons). But since this is AC, it's a field transmission- the charged entities have a short path and basically just jiggle. The way different mechanisms can be distinguished, using relatively simple means, is usually through temperature dependence measurements.
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Old 29th May 2013, 03:43 AM   #98
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SY, have you listened yet?
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Old 29th May 2013, 03:44 AM   #99
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Not to the extent I'd like (for some reason, lots of honey-dos this weekend). On casual listening, I couldn't tell much, if any, difference. If you're ready to do the reveal, I'll not be the hold-up.
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Old 29th May 2013, 04:24 AM   #100
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OK, probably on Thursday.
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