None so sure ...... - Jon Risch - Propeller Head Plaza

None so sure ......

Posted by Jon Risch (B) on March 26, 2005 at 07:57:48

In Reply to: Re: Crickets..chirp...chirp...chirpp! posted by JimOfOakCreek on March 25, 2005 at 15:21:50:

Triboelectric and piezo electric signal generation with cables has been documented before.

It is not the metal which generates the signal, but friction between the center insulation and the braid (triboelectric) or squeezing the center wire insulation (piezoelectric).

See:
http://bwcecom.belden.com/college/techpprs/tpbroad.htm
under the heading "French Braid Shields"

http://www.capgo.com/Resources/Measurement/Noise/Noise.html
down at the bottom, under the heading "Cable Noise"

http://www.mwccmme.com/mnwire/unique.html
and
http://www.mwccmme.com/mnwire/mwcclit/lownoise.html
A wire manufacturing company that supplies cable for the Military and for medical uses.

http://www.ammagazine.com/CDA/ArticleInformation/features/BNP__Features__Item/0,2606,60297,00.html
down near the bottom of the article on medical cables.

http://www.samash.com/catalog/showitem.asp?ItemID=32356&TempID=5
a catalog page showing a mic cable with low triboelectric noise.

http://www.keithley.com/data?asset=4640
most of the way down, under the heading "Other Sources of Noise", and at the bottom of this category.

http://www.gocsc.com/start/whitepapers/CoaxialCablesApplicat.pdf
last paragraph of page 4.

http://uts.cc.utexas.edu/~mic/info/amps/qanda/Cable-Microphonics-Explained

http://www.axon-cable.com/product/axon/coax/standar.htm
2nd cable specs from the bottom.

Of course, you have to actually make the effort to read these, and realize that these represent just a small sampling of the real world of cables with noise due to triboelectric and piezoelectric phenomenon.

Jon Risch

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Follow Ups Full Thread

Topic - Another cable question - Corndog71 22:27:22 03/15/05 (29)

Re: Another cable question - Soundmind 15:11:13 03/19/05 (1)

You should post this one in cables - Robert Hamel 16:53:06 03/17/05 (27)

Re: You should post this one in cables - Tom N. 06:43:45 03/21/05 (26)

Wrong Universe - Jon Risch 20:40:12 03/23/05 (16)

Re: Wrong Universe - Steve Eddy 10:45:18 03/26/05 (4)

Wrong Universe, wrong answer - Jacques 04:04:51 03/27/05 (3)

Re: Wrong Universe, wrong answer - Steve Eddy 09:22:09 03/27/05 (2)

so, we agree ;-) - Jacques 13:43:28 03/27/05 (1)

It would seem so. :) nt - Steve Eddy 18:39:21 03/27/05 (0)

Re: The Mouse Universe - JimOfOakCreek 12:08:10 03/24/05 (9)

Hey Jim See my post below with no transducer attached - Robert Hamel 17:05:08 03/24/05 (6)

Re: Hey Jim See my post below with no transducer attached - JimOfOakCreek 06:54:39 03/25/05 (5)

Ignorance is bliss nt. - Robert Hamel 11:19:30 03/25/05 (4)

Re: Crickets..chirp...chirp...chirpp! - JimOfOakCreek 15:21:50 03/25/05 (3)

Fed up with weak argumentation - Jacques 08:13:16 03/27/05 (0)

None so sure ...... - Jon Risch 07:57:48 03/26/05 (0)

Why jump to conclusions??? - Robert Hamel 07:46:52 03/26/05 (0)

Re: The Mouse Universe - Jon Risch 15:38:41 03/24/05 (1)

Re: The Mouse Universe - JimOfOakCreek 16:24:13 03/24/05 (0)

Re: Wrong Universe - Tom N. 09:35:55 03/24/05 (0)

Hey Tom - Robert Hamel 09:20:01 03/21/05 (8)

Re: Hey Robert - Tom N. 08:45:31 03/22/05 (0)

Re: Hey Tom - Soundmind 09:43:00 03/21/05 (6)

Explain the results of this simple experiment?? - Robert Hamel 16:09:23 03/21/05 (3)

Phantom Mike? - clifff 01:23:21 03/22/05 (2)

Won't Audioquest active-shielded cables behave the same way? - Atexanathome 17:10:58 05/06/05 (0)

Thanks for trying it out - Robert Hamel 06:58:08 03/22/05 (0)

Re: Hey Tom - Jacques 14:17:28 03/21/05 (1)

Ahh ! - hitsware 16:49:52 03/21/05 (0)

Follow Ups

None so sure ...... - Jon Risch 07:57:48 03/26/05 (0)

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