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| Joined: | Nov 21st, 2009 |
| Location: | United Kingdom |
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After reading here about using phototransistors for EVP and seeing the article here:
http://archive.atransc.org/aaevp_news/2007_aaevp_news/spring_2007.htm
I decided to give it a go.
I have the exact same recorder and so have copied exactly what the author did.
One discovery I have made is that the set up still can record audio! now, I am not sure if this is due to the internal microphone not being fully out of the circuit or if the phototransistor actually picks up audio.
Strange as it might seem I think it is the latter!
Here is a test I just made so you can judge.
Starts off with me speaking into the set up.
http://www.box.net/shared/hnrhhqj7oa
Then I hold the sensor in sunlight, compact fluorescent light, ambient room daylight, torch light.
Interesting that sun light seems to produce a more soft sound!
I shall be making some tests under differing light sources soon.