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Audio filters on EVPs: where does cleaning up noise cross into creating voices?
#1 · September 26, 2026, 9:55 AM
When you capture a faint audio whisper beneath heavy room hum, it is tempting to run it through noise gates, high-pass filters, and audio cleanup software to pull out the voice. But the more EQ slicing and background removal you apply, the more digital artifacts and robotic phase distortion you inject into the wave.
At some point, aggressive filtering turns normal HVAC hiss or shirt rustle into something that sounds like an eerie voice purely through audio pareidolia. When you analyze your own evidence, how much processing do you do before you decide an audio clip should just stay raw?