Maggie, I am not saying ALL EVP's can be explained by electronic “noise” in our environment. I have heard some very clear voices in EVP’s. Their source I still question. I am a skeptic of all sounds that someone has to tell me what it is saying. Kind of like seeing faces in different things in nature. They are not faces of spirits in my opinion.
Keep looking, because someday you will come across something that will raise the hairs on the back of your neck. Please be careful of where you walk at night.
If you get a chance to visit Springtown, TX, you should go to Veal Station Cemetery at night. The cemetery is located s located off of Veal Station Road, approximately three miles south of Springtown on FM 51. Be careful going down the winding road, it is rather narrow, with over hanging trees. The cemetery is on the left of the road. There are no lights or houses close the cemetery. The cemetery is in a wooded tree opening. It is against the law to actual go into the cemetery at night, but on most nights you can clearly see a glowing tombstone from the road at the fence. It is located about in the center close to the back of the cemetery. I have been there with family members that demanded we leave, because a vapor figure shaped like a woman was approaching the car.

Those are way cool.
What are you recording with?

Is anyone really surprised that will all the electronic and microwave bombardment of voices in our airwaves that people are able to pick up something? Not me.