On Mon, Jan 20, 2014 at 12:45 PM, Mohan Sundaram <[email protected]>wrote:
> I help a NGO in Bangalore that works on identifying disabilities, one of > which is deafness. I learn that deafness is scientifically measured by > seeing responses to pure tone sounds from 250 to 1500Hz. Currently, special > equipment needs to be bought and is not very handy. > > It occurred to me that this could be easily achieved using mobile phones. > Can some one on this list or their friends help out with this? > > Need: > A simple UI driven program to choose frequencies from a radio button list > with a drop down list of time period for which the pure tone needs to play. > Possible inclusions - volume control, spectrum sweep across the whole set > of frequencies with display showing the frequency being played etc. > I would love to help. I can develop the app both for Android and iOS. The issues are: - Though the software can produce perfect perfect tones, the speaker of the mobile phone will be incapable of handling these low frequencies. - Suggest we take the output off the audio out and provide a super low cost amplifier and a speaker. A typical sub woofer circuit is specially tuned for these low frequencies and are available in plenty in Ritchie street. If anyone else have suggestions, please add to this thread. I also believe this can be a nice small Open source project for both software and hardware. Regards, Arun Venkataswamy http://wondroussky.blogspot.in/ http://wondrouscode.blogspot.in/ "கற்றது கைமண் அளவு, கல்லாதது உலகளவு" - ஔவையார் Known is a drop, Unknown is an ocean _______________________________________________ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc ILUGC Mailing List Guidelines: http://ilugc.in/mailinglist-guidelines
