Hearing reduction is a popular difficulty for numerous – particularly those people who could have attended also many loud concerts in their youth. [mircemk] had not long ago been for a hearing take a look at, and observed that the treatment was really fairly simple. Armed with this know-how, he resolved to establish his very own examination procedure and doc it for many others to use.

audiogram showing the results of the arduino hearing test device
Resultant audiogram from the product exhibiting each and every ear in a various shade

By working with an Arduino to generate tones of many stepped frequencies, and gradually raising the volume right up until the exam matter can detect the tone, it is feasible to plot an audiogram of listening to threshold sensitivity.  Tests every single ear independently enables a comparison involving one particular aspect and the other.

[mircemk] has developed a good miniature cabinet that retains an 8×8 matrix of WS2812 addressable RGB LEDs.  A 128×64 pixel OLED screen delivers consumer guidance, and a rotary encoder with push-button serves as the consumer input.

Of system, this is not a calibrated professional piece of test equipment, and a lot will rely on the high-quality of the earpiece used.  On the other hand, as a way to examine for gross hearing challenges, and as an attention-grabbing experiment, it holds a great deal of promise.

There is even an extension, like a Class D audio amplifier, that allows the use of bone-conduction earpieces to aid slim down the result in of hearing decline more.

There is some additional details on bone conduction right here, and we have covered an intriguing optical stimulation cochlear implant, much too.