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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.

  • You can also try a different combination of Input / Output in Settings → Sleep noise recording → Input / Output (may be hidden under Advanced). The most effective solution so far seems to be changing Input to UNPROCESSED.

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.
Tags: recording, sonar