Sleep noise recording

1. What it does

Records significant sounds while you sleep and builds a ambient noise-level graph for the night. It also classifies the sounds into categories including snoring, talk, coughing, laughter, baby cry.

Note Enabling Sleep noise recording may lead to higher battery consumption during sleep tracking.

2. Where to find it

Settings → Sleep noise recording

You can check whether the phone is recording on the sleep tracking screen - red ⬤ indicates that the phone is currently recording.

On the seek bar to the right you can see current volume level and your Recording voluem threshold which indicates volume to start recording.

ss noise recording
Figure 1. Recording in progress
Note In order to achieve good recordings, keep the phone close to the sound source with the microphone area clear.

3. Options:

Enabled

Options below are not shown before enabling this switch.

Record snoring, sleep talk

Recording is triggered when a characteristic sound (snoring, talk, coughing, laughter, baby cry) is detected or when Recording volume threshold is reached.

Recording volume threshold

The volume at which the app starts recording. The good value is usually around 20-30% (may vary with device).

Note Lower threshold increases the sensitivity = more sounds are recorded.
Sound recognition
Sound recognition

Enables recognition of individual sounds (snoring, talk, coughing, laughter, baby cry). See Sound recognition.

Anti-snoring

Sets anti-snoring cues to make you stop snoring. See Anti-snoring.

Advanced
Noise statistics

If enabled, you will be seeing noise level statistics under each sleep records. Cannot be disabled if Record snoring, sleep talk is enabled.

Storage path

A path to your recordings saved on your device.

Automatic delete

If enabled, all unstarred recordings will be deleted after 7 days.

FAQ

Almost no recordings

  • Threshold volume is set too low, so only very loud sounds are recorded

    1. Go to Settings → Sleep noise recordings → Recording volume threshold

    2. Lower the threshold with the sliding bar

I want to clean up old recordings

First, a good thing to have is auto-delete, which will delete your noises automatically after one week. This is enabled by default in Settings → Noise recording → Automatic delete (might be hidden under Advanced section).

  1. Go to the Left ☰ _menu → ic action noise Noise

  2. Long press on one of the recording and use Delete all unstarred recordings.

Also if you are getting too many noises from the night, you may consider a higher recording threshold in Settings → Noise recording → Recording volume threshold.

Lullabies are recorded

  • Normally if lullaby is played, we stop noise recording, unless you have something plugged into your headphone jack as than we expect you have headphones and we can record normally.

Recordings in 10 minutes chunks

  • Threshold volume is set too low, so even very quiet sounds are recorded.

    1. Please go to Settings → Sleep noise recordings → Recording volume threshold.

    2. Increase the threshold level with the sliding bar.

Sonar is recorded, strange sound, chirping in recordings

  • Probably some filter to enhance audio experience is applied to speaker or mic.

  • Try different frequency in Settings → Sleep tracking → Test sensor, choose a frequency from the drop down menu list.

  • When you find the least affected frequency, you could try increasing the recording threshold a bit in Settings → Sleep noise recording → Recording volume threshold.

Note We have also discovered, that this exact issue can be solved by different positioning of the phone - if the bottom of the phone (where mic and speaker are) is not touching any surface, the artifacts are gone. So try to put the phone on a book or something similar with the bottom of the phone over the edge. If you are not hearing the sonar itself during tracking, but it only gets recorded, this usually helps.

Sound is detected but not recorded

  • When a sound is recognized and you can see the icon, but it was not recorded, the threshold for recording is too high.

    1. Lower the threshold in Settings → Sleep noise recording → Recording volume threshold .

The app did not record anything

  • Make sure the app has an external storage permission granted.

    1. Go to Settings → Sleep noise recording → Storage path

    2. Re-select the noise directory with the noise files

  • Also check if you phone is not running out of storage memory.

Wrong sound recognition

  • When listening to the noise recordings, you may find some of them tagged (#snore, #talk, etc.) incorrectly.

  • You can fix the tags manually - either by editing the comment, or by tapping a corresponding icon on the player screen.

  • The app may ask you to share the misclassified recording with us. If you agree, we will use the recording to learn from the mistake and improve our algorithm.