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Quick and Simple Hearing Evaluation
This app can evaluate your hearing capabilities. The term dB HL describes your hearing loss in decibels.
The table below shows a common way to classify hearing loss (Source: Clark, J. G. (1981). Uses and abuses of hearing loss classification. Asha, 23, 493–500.)
| Degree of hearing loss | Hearing loss range (dB HL) |
|---|---|
| Normal | –10 to 15 |
| Slight | 16 to 25 |
| Mild | 26 to 40 |
| Moderate | 41 to 55 |
| Moderately severe | 56 to 70 |
| Severe | 71 to 90 |
| Profound | 91+ |
First your earphones must be calibrated.
Important: Earphones must not have integrated volume control or loudness, equalizers, etc.
You can either perform a full test which requires one or better several persons between the ages of 18 and 35 with normal hearing. Or you can perform a simple calibration at 1000Hz only (assuming good hearing at this frequency). In this case it is assumed that the earphones are linear across the frequency range and calibration values for the other frequencies are then calculated using the ISO226:2003 standard. Whenever you hear a beep simply touch the screen. You can pause / continue with a long click and speed up with a double click. If you have several persons available for calibration simply press "Add Calibration" and an average value of existing calibrations will be calculated. You may also delete the whole calibration.
After that you can perform tests and view them in test results.
You can then also perform tests at single frequencies. There you can manually select ear, frequency, and sound amplitude by clicking on the buttons.
Backup/restore is also available.
This app is published under GNU GPL V3 License.
The app uses: Zip4j (https://github.com/srikanth-lingala/zip4j) which is licensed under Apache License Version 2.0 AndroidX libraries (https://github.com/androidx/androidx) which is licensed under Apache License Version 2.0 MPAndroidChart (https://github.com/PhilJay/MPAndroidChart) which is licensed under Apache License Version 2.0 Material Design Icons (https://material.io/resources/icons/) which are licensed under Apache License Version 2.0
The original version of this code is published under MIT license, Copyright (c) 2014 Reece Stevens.