There are problems with hearing tests and the provision of hearing aids in poorer countries, but an alternative use of existing technology could provide a partial solution.
The project I did for my bachelors degree was the design of an audiometer. An Audiometer is a device to test a persons hearing.
This audiometer was designed to run from batteries and used very little power. It was designed for use in third world countries. But unfortunately there were some problems. The headphones used in hearing tests are very expensive so even if the audiometer could be made very cheaply the headphones would be the limiting factor in how cheaply the audiometer could be sold.
There is also a problem in providing hearing aids to people in third world countries, even if the aid is provided for free (which is rare) then the ongoing cost of batteries is often too much for some poorer people.
It seems to me that there are many mobile phones in the world, even in third world countries many people who struggle to find the money for food have a mobile phone in their pocket. Also countries like India manufacture very cheap Android mobile phones.
Mobile phone manufacturers have done a great deal of research into making mobile phones efficient at playing music into headphones using as little battery power as possible.
It ought to be possible to program an application to take the sound from the microphone and play it through the headphones with the facility to adjust the volume, this ought to be a fairly simple application. It might even be possible to include a graphic equaliser to adjust the frequency response.
If this were possible, especially if this app was available as a free download then deaf people in third world countries who already have a mobile phone could download a ‘virtual’ hearing aid for free.
Of course I would always recommend a professionaly done hearing test and I acknowledge that a mobile phone app is no substitute for a real hearing test and a properly prescribed hearing aid but healthcare in third world countries is seldom free and having some sort of hearing aid is better than going without anything, but only if it is your only option.
Because this idea has been put out into the public domain in this blog nobody can apply a software patent to the idea, they could copyright their own implementation of the idea but they could not stop anyone from writing a different implementation of the idea.
I have never written a mobile phone app so I don’t know how complicated it might be to write such an app but it seems to me that it might not be that complicated and it would certainly be of potential use to a great many people.
Who is up for the challenge?