How do I distinguish words I cannot hear from words I cannot understand?
Quick answer
Use an “inaudible” label when the recording does not let you make out the speech. Use “unintelligible” when speech is audible but you cannot identify the words or meaning. If only part is unclear, mark just that part and preserve the words you can hear. Do not fill gaps with a guess; if a likely interpretation matters, keep it separate and label it as uncertain.
The question, the details, the next step.
I am reviewing a recording and keep getting stuck between “inaudible” and “unintelligible.” What is the practical difference?
Ask yourself what is unclear. If you cannot hear the speech well enough to make out what was said—for example, the sound is too faint or covered by noise—mark that portion as inaudible. If you can hear someone speaking, but cannot identify the words or understand them, mark it as unintelligible.
The labels describe different kinds of uncertainty, not different levels of confidence in a guessed word. Neither label should be used to conceal a guess. Follow any project-specific label convention if one is provided; otherwise choose clear wording and use it consistently.
What if I can understand most of the sentence, but one word is unclear?
Keep the part you can make out, and mark only the uncertain span. Do not replace a whole sentence with an uncertainty label when just one short section is unclear.
For example, suppose a speaker says, “Please bring the [unclear] folder to the meeting.” If the recording masks the word, you could write: “Please bring the [inaudible] folder to the meeting.” If the word is audible but you cannot identify it, write: “Please bring the [unintelligible] folder to the meeting.” These bracketed labels are an illustrative convention, not a universal required format. If your project uses timestamps or different tags, use those instead.
Sometimes I think I know the missing word from the topic. Should I put it in?
Do not present context-based inference as a word you heard. First decide whether the recording itself supports the word. If it does not, keep the uncertainty label. A familiar topic, a predictable phrase, or what someone probably meant can suggest a candidate, but that is not the same as hearing it clearly.
If your assignment allows notes, you can keep a candidate separate from the transcript and identify it as a guess, such as: “Possible word: ‘folder’ (uncertain).” Do that only if it is useful and permitted. Do not silently insert the candidate into the spoken words. The label alone cannot establish what the speaker actually said.
Can you give me a quick way to make the decision consistently while reviewing?
Use this short sequence for each doubtful passage:
- Is speech audible in the passage? If not, mark the relevant portion inaudible.
- Is speech audible, but the words cannot be identified or understood? Mark that portion unintelligible.
- Can you make out some words around it? Preserve those words and label only the unclear span.
- Are you relying on what seems likely rather than what you can hear? Keep that interpretation out of the transcript, or label it separately if notes are allowed.
Worked example: in “Turn left after [uncertain span],” retain “Turn left after” and mark only the span. Use [inaudible] if the sound is not discernible; use [unintelligible] if speech is audible but the words remain unclear. If you cannot tell which kind of uncertainty applies, do not pretend certainty: use the closest allowed label and flag the ambiguity if your workflow provides a place for it.
A practical checklist
Decide whether the speech itself is audible before choosing a label.
Use the label for the uncertainty you actually have: inaudible or unintelligible.
Keep clear words and mark only the unclear portion.
Do not insert a context-based guess as if it were heard.
Follow the project's label and timestamp conventions where provided.
A few more useful answers
Should I mark an entire sentence as unintelligible if one word is unclear?
Usually, mark only the unclear word or span and preserve the words you can identify. Use a broader label only if the whole passage is unclear or your project specifies that convention.
What if I cannot tell whether a passage is inaudible or unintelligible?
Do not force a distinction you cannot support. Use the closest label allowed by the project and, if possible, note that the type of uncertainty is unclear.
Are bracketed labels required?
No universal format is established here. Brackets are a convenient example; follow the transcription instructions for the task you are doing.