Recording Sound in Paranormal Investigations
This is a summary of the Society for Psychical Research (SPR)'s guide for recording sound in paranormal investigations.
Why Record?
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Helps determine if a sound was real, environmental, or a hallucination.
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Provides verifiable evidence and allows later analysis.
Choosing a Recorder
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Digital recorders = reliable, easy transfer to computer.
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Match recorder to purpose: interviews vs. ambient sound.
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Battery + external power option = flexibility.
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Extra memory cards = nearly unlimited recording time.
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External mic input is highly valuable.
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Avoid overly complex models (missed recordings = lost evidence).
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Prefer uncompressed formats (.wav) over MP3.
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Smartphones, tablets, and computers can also work as recorders.
Setup Tips
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Record in .wav at 44.1kHz / 16-bit minimum.
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Keep settings consistent across all recorders.
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Turn OFF noise reduction, filters, and effects.
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Input/mic gain:
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Ambient quiet: ~80%
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Speech/interviews: 40–60%
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Ensure fresh memory card + full power.
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Do a test recording (levels, mic working, date/time set).
Microphones
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Built-in mics = poor, only for notes.
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Omni-directional: captures all ambient sounds.
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Directional: isolates specific sounds, reduces distractions.
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Some mics require phantom power or batteries → check compatibility.
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Use mic stands to avoid handling noise.
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Suspension (anti-vibration) mounts help reduce unwanted rumble.
Third-Party Recordings
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Always ask: Why was it made? What’s on it? Where/when recorded? What device?
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Prefer unedited originals — edits can remove context.
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If a file looks altered without reason, treat it as unreliable.
MP3 Files
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Compressed format → missing audio range, less reliable for analysis.
Extra Tips
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Place recorder on a bath sponge to reduce vibration noise.
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When relocating → recheck settings & make a test recording.
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After battery changes or formatting, confirm settings didn’t reset.
- C.E.
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