Recording Sound in Paranormal Investigations

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This is a summary of the Society for Psychical Research (SPR)'s guide for recording sound in paranormal investigations.


Why Record?

  • Helps determine if a sound was real, environmental, or a hallucination.

  • Provides verifiable evidence and allows later analysis.

Choosing a Recorder

  • Digital recorders = reliable, easy transfer to computer.

  • Match recorder to purpose: interviews vs. ambient sound.

  • Battery + external power option = flexibility.

  • Extra memory cards = nearly unlimited recording time.

  • External mic input is highly valuable.

  • Avoid overly complex models (missed recordings = lost evidence).

  • Prefer uncompressed formats (.wav) over MP3.

  • Smartphones, tablets, and computers can also work as recorders.

Setup Tips

  • Record in .wav at 44.1kHz / 16-bit minimum.

  • Keep settings consistent across all recorders.

  • Turn OFF noise reduction, filters, and effects.

  • Input/mic gain:

    • Ambient quiet: ~80%

    • Speech/interviews: 40–60%

  • Ensure fresh memory card + full power.

  • Do a test recording (levels, mic working, date/time set).

Microphones

  • Built-in mics = poor, only for notes.

  • Omni-directional: captures all ambient sounds.

  • Directional: isolates specific sounds, reduces distractions.

  • Some mics require phantom power or batteries → check compatibility.

  • Use mic stands to avoid handling noise.

  • Suspension (anti-vibration) mounts help reduce unwanted rumble.

Third-Party Recordings

  • Always ask: Why was it made? What’s on it? Where/when recorded? What device?

  • Prefer unedited originals — edits can remove context.

  • If a file looks altered without reason, treat it as unreliable.

MP3 Files

  • Compressed format → missing audio range, less reliable for analysis.

Extra Tips

  • Place recorder on a bath sponge to reduce vibration noise.

  • When relocating → recheck settings & make a test recording.

  • After battery changes or formatting, confirm settings didn’t reset.


- C.E.


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