Inspection of Kids Hearing Game, the device it is running on, and the headphones in use must be conducted daily. Inspect the device and headphones for any defects. Find a known good hearer and have them play the game. Quick Speech is sufficient and only requires a couple of minutes to complete. While playing, listen for distortion or clicks. If any of these symptoms occur, please take action to correct the issue, or call Hearing.Games for assistance.
Pure tone hearing screening tests rely on their ability to produce pure tones at a specific loudness. Consumer grade equipment such as Android and iOS devices have no such capability built into them. As a hearing screening test, "Kids Hearing Game" must be "calibrated" to produce useful results. Here are a few methods to use. In all cases, it is advised that you test the settings using the "Known Good Hearer" method periodically.
Preset Calibration Method
We have tested several mobile devices paired with specific headphones, and derived presets for them. If the device and headphone you are using are among those that we have tested, then there will be a preset offered. This is a quick and straightforward way to get started.
Unfortunately, the sheer number of devices and headphones available to consumers means that presets cannot be offered for all combinations.
When "Kids Hearing Game" starts, it detects the specific make and model of device it is running on (e.g., Apple iPhone 8 plus, Amazon Kindle Fire HD 8, etc.). If headphone presets are available for your device, then a list of these will be shown and you should select the one you are using. A message will be displayed reminding you to adjust the device's volume to its maximum setting, as this is how Hearing.Games set it when the preset was determined.
If no presets are available for your device, then 'Other' will be selected, and you need to calibrate using another method.
Equivalent Sound Method
To do this, you will need periodic access to an audiometer. It should be possible to achieve good accuracy using this method. Here are the steps:
- Find a quiet place to work.
- Connect headphones to your device, do not put them on yet, Launch Kids Hearing Game.
- When the game is done initializing, you will be on the "mode screen." From here, touch on any of the game mode buttons.
- Landing on the "lantern screen" touch the "hamburger" (three stacked horizontal lines) button.
- The "options" page will show several buttons. Touch the "Calibration" button.
- Set the "Master Volume" slider to about 70.
- Set your device's volume to maximum. This is typically done with the top of two physical buttons on the side of your device.
- Touch the 1kHz-30dB button, touch the Left Ear button
Now the task is:
- Setup your Audiometer to create a tone of 40dB at 1000hz to the left ear.
- Listen to the sound from the Audiometer, and try to remember how loud it is.
- Listen to the tone from KHG, and adjust the master volume slider until it's loudness matches that of the audiometers.
- Repeat the two previous steps until you are satisfied that the two devices are producing the same volume.
- When you are satisfied the volumes match, write down the number displayed for the "Master Volume."
- Touch the Right Ear button on KHG and reconfigure the Audiometer to make a sound to the right ear.
- Repeat the above sound matching steps.
- Average the Left and Right Ear Master Volume settings. Set the configuration slider to this setting.
While there are many steps to this procedure, if done correctly, it can produce good results. You may want to practice doing it a couple of times to see that the configuration settings you get are consistent.
From now on, when you use KHG, set the device volume to maximum and administer the test.
By its very nature, the Bio-Acoustic Method is a subjective method of calibration. Inevitably it will vary from user to user and even day to day. However, with some practice, it is possible to achieve useful results with it.
Specifically, the recommendation is to have someone with normal hearing adjust the device volume, so the Kids Hearing Game intro music is "comfortable, but not loud." This description has been carefully chosen to convey the idea that music should be easy to hear, yet not loud.
To check this setting, have someone with known good hearing play the game and make sure their hearing results are consistent with expectations.