Buildable tools and devices: what they do, what you need, how to build or use them, and a worked example. The interactive ones open a tool.

Open the free tool →

Buildable Kit

The EVP Session Kit

A timer, a noise source and a log for a recorded listening session.

Open the tool

What it is

To make an EVP session repeatable: same duration, same source, same log, same close.

At a glance

Inputs
A quiet room; a recorder; a noise source; a fixed duration; a question.
Outputs
An audio file, a timestamped log and a short written reading.

How to do it

  1. Set the room and the recorder; note the time and the noise source.
  2. Ask one question and state the duration.
  3. Record in silence or over the noise for the fixed duration.
  4. Replay once at normal speed and once slower; log fragments without interpreting them yet.
  5. Write a short reading and mark the fragments you rejected.
  6. Close the session and delete the audio or archive it deliberately.

What you need

  • A recorder
  • A noise source
  • A timer
  • A JSONL log
  • Headphones

A worked example

A ten-minute session over white noise, with the question 'what am I not hearing?' The log records four fragments; two are rejected as room noise; one becomes a line in the weekly record.

Variations

  • Use a radio sweep instead of white noise and log the frequency.
  • Run the same session at the same time for four weeks and read the series.
  • Use the session as a sound-source for a cut-up instead of a voice contact.
Code sketch

This is a sketch, not a runnable program. It names the shape of the automation; the definitions are yours.

{"ts":"2026-11-07T21:00:00+11:00","duration":600,"source":"white-noise","question":"what am I not hearing?","fragments":[],"rejected":[]}

Related entries

One of 110 entries in the Technomancy workshop. How a working is built Is it wrong somewhere?

Mentioned by 1

Every entry that names The EVP Session Kit, grouped by section.

⌘ Protocols 1

More in Instruments

The entries either side of this one in the same section.

All of Instruments →

New entries, when they land

Occasional notes when a section of the grimoire is added or revised. No account, no tracking across sites, and one line to leave.

Grimoire updates only. Nothing is shared. Every note has an unsubscribe link.