Home observations can help you describe snoring, but they cannot reliably identify the exact cause. Whether the mouth is open, which side you sleep on and how the sound changes are clues to discuss rather than diagnoses to make.

An open or closed mouth is not a treatment selector
Simple online rules often claim that a closed mouth means a tongue problem and an open mouth means a throat problem. Those observations do not establish what happens throughout the airway during sleep.
Avoid choosing a device solely because you match one description. Ask what assessment makes the proposed option relevant.
Position can be useful context
If the noise consistently differs between positions, record that. It does not mean back-sleeping snoring is always mild or that snoring in every position automatically indicates severe disease.
Use recordings for communication
With everyone’s agreement, a short recording may illustrate a sound you find difficult to describe. Keep it private and note the circumstances. Recording distance and background noise affect what you hear.
Do not treat an app label or score as a measurement of breathing adequacy. A lower score after a product trial cannot confirm that sleep apnea has been excluded.
A useful note has four parts
- What was observed, without guessing the cause.
- Whether it was a single event or a recurring pattern.
- Any effect on sleep or daytime alertness.
- What you want help deciding.
What if you sleep alone?
You can still describe your own sleep, waking and daytime symptoms. Tell the clinician that you do not have a partner’s observations. You do not need to buy recording equipment before seeking advice.
Bring the note to an appointment when symptoms persist or concern you. The clinician can decide what further assessment is appropriate. Your role is to report what you know, not to perform a sleep study at home.
Keep reading
Sources and further reading
Published by TannerMedico A/S, the manufacturer of Asonor. This article provides general information for adults and does not replace individual medical advice.


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