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Pure tone Audiometer

Naveen G Bhat , 12-21-2018, 05:07 AM
Dear forum,
I wanted make a pure tone audiometer, i don't know much about it.
if some one knows about pure tone audiometer can some one please tell me that how it works? and what all it includes while designing the pure tone audiometer?.
Paul van Avesaath , 12-21-2018, 07:24 AM
i have no clue, but google is you friend
Naveen G Bhat, 01-02-2019, 12:21 AM
Thank you sir,
Naveen G Bhat , 01-02-2019, 01:08 AM
Dear forum,

While searching reference circuitry for pure tone audiometer i had found one more circuit in which they used micro controller GPIO pins to generate the different frequency levels,i will be attaching that image also please go through once, here i have doubt that how he created the different frequency level by connecting switches to GPIO pins. and how the volume controls are working in attached file.
Do we get frequency signal in all GPIO pins micro controller?? if yes how to get difference frequency level.... what modification i need to do get these frequency ranges??
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