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IR Receiving Diode Soldered To Microphone Connector

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Posted: Mar 18th, 2011 11:15 PM

clockdryve
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Received this short EVP just awhile ago while using my Sony ICD-B300 recorder.

I've had this IR Receiving Diode wired up since last year...and always tried it during the daytime and I would get nothing but very loud static...of course since there was MUCH light for it to turn into electrical signals....

Well tonight I decided to try it in the room with NO lights on.

I recorded for a little over a minute...and at the 16 second mark I hear a young male voice say "it works Jim"..............

I will upload the original "clipped" file and then a few that are amped a little and either high or lowpass filters used to enhance slightly. Still gonna be low audio...so headphones are a must.

Attachment: it_works_jim-original-evp.wav (Downloaded 879 times)

Last edited on Mar 18th, 2011 11:17 PM by clockdryve

Posted: Mar 18th, 2011 11:18 PM

clockdryve
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clockdryve wrote: Received this short EVP just awhile ago while using my Sony ICD-B300 recorder.

I've had this IR Receiving Diode wired up since last year...and always tried it during the daytime and I would get nothing but very loud static...of course since there was MUCH light for it to turn into electrical signals....

Well tonight I decided to try it in the room with NO lights on.

I recorded for a little over a minute...and at the 16 second mark I hear a young male voice say "it works Jim"..............

I will upload the original "clipped" file and then a few that are amped a little and either high or lowpass filters used to enhance slightly. Still gonna be low audio...so headphones are a must.

Same file with a little amplification and highpass filter added

Attachment: it_works_jim-highpassfilter-evp.wav (Downloaded 841 times)

Posted: Mar 18th, 2011 11:19 PM

clockdryve
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Joined:	Feb 7th, 2010
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clockdryve wrote: clockdryve wrote: Received this short EVP just awhile ago while using my Sony ICD-B300 recorder.

I've had this IR Receiving Diode wired up since last year...and always tried it during the daytime and I would get nothing but very loud static...of course since there was MUCH light for it to turn into electrical signals....

Well tonight I decided to try it in the room with NO lights on.

I recorded for a little over a minute...and at the 16 second mark I hear a young male voice say "it works Jim"..............

I will upload the original "clipped" file and then a few that are amped a little and either high or lowpass filters used to enhance slightly. Still gonna be low audio...so headphones are a must.

Same file with a little amplification and highpass filter added
Again...same file, with amplification and lowpass filter added.

Attachment: it_works_jim-lowpassfilter-evp.wav (Downloaded 866 times)

Posted: Mar 19th, 2011 01:07 PM

clockdryve
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If to hard to hear...please download and amplify a little more. The voice is near center of clip.

Posted: Mar 19th, 2011 01:08 PM

clockdryve
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If to hard to hear...please download and amplify a little more. The voice is near center of clip. About 1 to 2 second mark for the total length. Good Luck

Picture uploaded

Attached Image (viewed 379 times):

IR Diode Receiver Microphone.jpg

Last edited on Mar 19th, 2011 09:07 PM by clockdryve

Posted: Mar 19th, 2011 09:09 PM

clockdryve
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clockdryve wrote: If to hard to hear...please download and amplify a little more. The voice is near center of clip. About 1 to 2 second mark for the total length. Good Luck

Picture uploaded

Uploaded the ORIGINAL capture that has been looped and amplified

Attachment: original-LOOPED-AMPED-evp.wav (Downloaded 870 times)

Last edited on Mar 20th, 2011 07:09 PM by clockdryve

Posted: Mar 20th, 2011 10:12 PM

pol
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clockdryve wrote:
Received this short EVP just awhile ago while using my Sony ICD-B300 recorder.

I've had this IR Receiving Diode wired up since last year...

Would it be possible to explain very simply - what this is?

Posted: Mar 21st, 2011 05:41 AM

clockdryve
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Yes,

This is just an infrared LED soldered to a 1/8 inch microphone plug.

When used this way the LED will work as an Infrared Receiver...

You can point it at any light source (will not detect LCD monitors) and there will be an increase in background "hiss" sounds....where often the EVP's are located.

In this recording example I chose to record in the "dark" because daylight made a lot of noise...making it difficult to determine if any weak audio was available from an EVP

Posted: Mar 21st, 2011 06:27 AM

drrh
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Jim I can hear "it works Jim, I told you it would".

Debbie :biggrin:

:biggrin:

Posted: Mar 21st, 2011 06:34 AM

clockdryve
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Thanks Debbie.

I could hear a lower voice in there...but couldn't determine what was said.

Posted: Mar 22nd, 2011 03:29 PM

clockdryve
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Here is the website talking about this style microphone http://atransc.org/techniques/techniques_optical_microphone2.htm

I guess it WILL pick up "lcd computer screens" too.
Since it will also receive normal light and ultraviolet as well as Infrared light sources....(LCD's do not transmit infrared).

I purchased 2 more IR Photodiodes and 2 - 1/8" (3.5mm) connectors (mono) today so I can make a few more....the numbers given in the discription for the Radio Shack stock numbers...are different as of today. They are 276-0145 (has a "0" in place now).

Posted: Mar 23rd, 2011 12:01 PM

clockdryve
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drrh wrote: Jim I can hear "it works Jim, I told you it would".

Debbie :biggrin:

:biggrin:

Hi Deb,

I think I can NOW hear what you are saying....

I hear the female voice saying "I told you it would"

I couldn't hear it before....But I noticed this morning that my ears "seamed" to be a little more sensitive today...And I gave it a shot about 10 minutes ago.

Sure enough I heard it. NICE going Debbie....good listening

I've included this shortened "clip" of the above capture with both voices. THANKS

Attachment: It_works_jim--I_told_you_it_would-evp.wav (Downloaded 819 times)

Posted: Mar 23rd, 2011 01:19 PM

drrh
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No problem Jim! I don't take the credit for it though, it just jumps out at me! Sometimes I'm right, sometimes not! But I love to listen to clips anyway! It fascinates me!!

Debbie :biggrin:

:biggrin:

Posted: Mar 23rd, 2011 03:02 PM

pol
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I hear slightly differently -

"it worked .. it worked for you Jim"

Posted: Mar 23rd, 2011 07:36 PM

clockdryve
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Thanks pol for your post. It sure is difficult with these very weak EVP's.

So many times it can sound so different

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