This has been bugging me for ages. So the standard EVP technique is either dead silence or white noise, then you ask questions and review playback later. But surely we're just training our brains to find patterns in random noise? That's literally what pareidolia is.
I've done about 30 sessions over the past year and I've definitely captured 'anomalies' - weird voices, unclear responses to questions. But every time I play them to someone else without context, they hear something completely different to what I heard.
The question: Are there any proper controls we can use to rule out confirmation bias? Has anyone successfully documented EVP in a genuinely blinded test setup?