Compatibility: Requires iOS 8.0, Android 4.0 and later
Most often the early signs of hearing loss show up as a temporary change in one’s hearing threshold. This typically resolves within 16-18 hours and we have all experienced this, especially after a loud concert or a long day at work- typically a feeling of muffled sound and perhaps some ringing in your ears. The app measures the softest sound that can be heard before the music or noise exposure, and then again after the music or noise exposure. This difference is a measure of the temporary hearing loss, also known as temporary threshold shift (or TTS).
A small shift, measured in decibels or dB, is not significant, but larger ones between 6-15 dB (orange), or even greater than 15 dB (red) can be indicators of over-exposure.
If this happens, then a day or two of relative quiet may be very useful, in order to prevent this temporary problem from becoming a permanent one. Hearing protection would be very useful the next time you are in a similar environment.
1. For the Temporary Hearing Loss Test (THLT) app the microphone is never engaged. The THLT assesses a user controlled volume control before and after a noisy event and the difference is calculated. No data is stored beyond that of the individual device or elsewhere such as the cloud.
2. The THLT app does not record any location, time, or personal statistics other than the difference data mentioned above.
3. Children’s policy: The THLT app does not record any personal information regardless of who uses it and the microphone is not required for the THLT app. Only the difference measure (before and after) is recorded and is only accessible by the app user.