Instructions
Learn how to create simulated patients, load patient files, use keyboard shortcuts, and review your audiometry log.
With this audiometer simulation web app, you can practise your audiometry skills on simulated patients.
Creating patients
In the Create random patients section on the Patient Management page, you can create patients based on a number of typical audiogram configurations.
These patients are generated automatically by the app in a random fashion so that all patients are unique — basically the same configuration will never be created twice. Thus, you work with truly unique patients every time.
Loading patients from a file
You can load patients defined in text files (.txt) or encrypted binary files (.simpat). Text files can be created in any plain-text editor. Both file types must contain the following data:
- True inner ear thresholds for right (TTR) and left (TTL) ears.
- Conductive components for right (CCR) and left (CCL) ears.
"True inner ear thresholds" are defined as the average pure-tone thresholds that would be obtained over many repeated tests if the patient had no conductive component and there were no influence from the contralateral ear.
"Conductive components" are defined here as the theoretical differences between the air- and bone-conduction thresholds of the test ear, without any influence from the contralateral ear.
Use only integer values (no decimals) separated by spaces.
The ID row is optional.
ID Sven TTR -10 -5 -4 0 4 6 20 25 35 50 55 TTL -10 -5 -4 0 4 6 20 25 35 50 55 CCR 0 0 0 0 3 6 7 6 4 2 0 CCL 0 0 0 0 0 0 0 0 0 0 0
Encrypted .simpat files can be created in the Create encrypted patient file section in Patient Management.
They are not human-readable and can therefore be distributed without revealing the patient's thresholds — suitable for controlled audiometry training exercises.
Show Audiogram button
You can click the Show button on the audiometer to view the patient's true audiogram, rounded to the nearest 5 dB. The true hearing thresholds are shown in green, using the symbols normally used for unmasked thresholds. Please note that, due to the so-called masking dilemma, it may not always be possible to determine these true thresholds using pure-tone audiometry.
When loading patients from an encoded file, this feature is disabled to prevent peeking at the thresholds.
Keyboard shortcuts
When the audiometer panel is focused, you can use the following keyboard shortcuts.
| Key | Action |
|---|---|
| Q | Signal channel: level up |
| A | Signal channel: level down |
| Z | Stim button (hold to present signal) |
| E | Signal channel: AC (R–L) |
| R | Signal channel: BC (R–L) |
| T | Signal channel: Insert phone |
| S | Lower frequency (←) |
| K | Higher frequency (→) |
| P | Masking channel: level up |
| L | Masking channel: level down |
| Y | Masking channel: R |
| U | Masking channel: L |
| I | Masking channel: Insert phone |
| O | Masking channel: Rev |
| 1 | Store threshold |
| 2 | Toggle unreached |
| 3 | Toggle crossheard |
| 4 | Toggle uncertain |
| 5 | Delete threshold |
Pure-tone audiometry log
All actions performed by you and by the simulated patient are logged so that you can review them later.
- Use the Download log button below or on the audiometer page to save the log as a text file.
- Use the Clear log button below or on the audiometer page to remove the current session log.