Anyone else been getting static bursts right before a spirit comes through on EVP?

Yeah this happens to me pretty consistently actually. I do most of my EVP work out on the moors and in old engine houses down here in Cornwall, and there's almost always a burst of static - sometimes two or three short ones - right before anything intelligible comes through. I've started treating it like a kind of heads up to pay attention.

What I cant figure out is whether the static is part of the process somehow, like the energy building up, or if its just interference from whatever is causing the voice phenomenon in the first place. Two different things really.

Does anyone know if this has been documented properly anywhere? I've read bits and pieces but nothing that really digs into the static specifically. Would be curious if people are noticing any pattern in how long the gap is between the static and the actual response coming through.

@RiverShadow yeah this is well documented in EVP research circles. What you're picking up is likely electromagnetic fluctuation preceding whatever phenomenon you're recording - some researchers think the EM spike actually causes the audio artifact rather than being a separate event. I've been cross-referencing EVP captures with a TriField meter for about three years now up here in Aberdeenshire and the correlation is pretty consistent, the EM reading often jumps 2-4 seconds before a class A or B capture. Worth getting a dedicated EM logger running parallel to your audio recorder so you can timestamp both and compare afterwards. The engine houses would be interesting because you've got residual metal structures that could be amplifying or channelling whatever EM activity is present. What recorder are you using? Some devices are more suseptible to this kind of pre-capture static than others and it affects how you should interpret the data.