EVP classes are informal labels some paranormal investigators use to describe how clear a recorded sound seems. Class A usually means readily intelligible, Class B less clear, and Class C highly ambiguous. Definitions vary between groups. These labels do not authenticate a recording or establish that its source is paranormal.
A practical way to read the labels
| Label | Common use | What still needs checking |
|---|---|---|
| Class A | Listeners perceive clear words without substantial enhancement. | Could it be ordinary speech, a broadcast or an edit? |
| Class B | A voice-like sound is audible, but wording is disputed. | Do independent listeners agree before seeing a transcript? |
| Class C | The sound is faint, distorted or very ambiguous. | Is speech actually present, or does interpretation depend on prompting? |
This is a description of hobby terminology, not a standardized grading system. A “Class A” label is not a scientific certification. Do not assume a published clip uses the same definitions as your group.
Clarity and source are separate questions
A clear recording of a neighbor speaking can be easy to understand yet have an ordinary source. A muffled sound may remain unidentified without being paranormal. Give each clip two separate notes: how intelligible it is and what is known about its origin.
For the basic terminology, see EVP recording meaning. A recording discovered on playback is not automatically unusual just because nobody remembers hearing it at the time.
“Interactive” and “residual” describe interpretations
Some investigators call a clip interactive when it appears to answer a question, or residual when it seems unrelated to the session. Neither term demonstrates awareness, intent or a repeating historical event. Record the actual question, the delay and competing explanations before choosing any interpretive label.
For example, “a short sound occurred eight seconds after the question” is an observation. “It answered yes” is a transcription and interpretation. Keep both statements separate so a reviewer can assess them independently.
Use independent review before a group discussion
- Preserve the native recording and note the segment’s start and end times.
- Provide the unprocessed clip with enough surrounding context to assess nearby sounds.
- Ask listeners privately what, if anything, they hear. Allow “no words” and uncertainty.
- Record their wording before revealing the proposed transcript.
- Compare the notes and preserve disagreement rather than choosing only matching answers.
A PLOS ONE study examines expectation and EVP perception. Such research concerns interpretation of ambiguous audio; it does not make a listener vote a test of paranormal origin.
Report processing alongside the grade
If the clip was filtered, slowed or amplified, identify the version being graded. Keep a separate result for the raw recording. Audacity’s noise-reduction guidance describes artifacts and loss of desired audio that can result from processing.
A useful review record includes file ID, time range, raw description, processing settings, each listener’s transcript, known environmental sounds and unresolved questions. Follow the EVP analysis workflow for preservation and comparison.
Can a classification prove a haunting?
No. A label can organize a collection, but it cannot identify the source of a sound. Prefer a report that says what was recorded and what could not be determined. Avoid telling someone a recording identifies a deceased person when the available evidence does not establish that.
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