DIY Arduino Hearing Test Device

Maria J. Smith

Listening to reduction is a common issue for quite a few – in particular individuals who may possibly have attended too many loud concerts in their youth. [mircemk] experienced not long ago been for a hearing take a look at, and discovered that the procedure was really rather uncomplicated. Armed with this know-how, he decided to establish his very own test method and doc it for others to use.

audiogram showing the results of the arduino hearing test device
Resultant audiogram from the unit demonstrating each ear in a distinctive coloration

By applying an Arduino to develop tones of various stepped frequencies, and step by step growing the quantity till the test topic can detect the tone, it is doable to plot an audiogram of hearing threshold sensitivity.  Screening every ear independently allows a comparison in between just one side and the other.

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

Of system, this is not a calibrated expert piece of check equipment, and a large amount will count on the good quality of the earpiece used.  Even so, as a way to look at for gross hearing issues, and as an attention-grabbing experiment, it holds a great deal of assure.

There is even an extension, which include a Class D audio amplifier, that makes it possible for the use of bone-conduction earpieces to assist slim down the lead to of listening to reduction further more.

There’s some more info on bone conduction right here, and we’ve protected an intriguing optical stimulation cochlear implant, much too.

https://www.youtube.com/look at?v=H_ecWkNRzCI

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