On Wed, 13 Nov 2013, "Christopher M. Bailey" <chris(a)chrisbailey.au.com>
> But thus far don't feel quite ready to
embrace a hearing aid ;
> particularly as it mostly seems to affect mobile phone conversations .
The description of both of those programs indicates that they take sound from
the microphone and amplify it on the headphone jack. So either of them could
act like a hearing-aid for local sounds but it seems that neither of them
would be suitable for a phone call in progress.
The headphone jack on a phone can take any device with the right connector.
So you could plug it in to a pair of powered headphones with a built in
amplifier (I recommend noise-cancelling headphones for a long phone call).
The volume of such a set of headphones with amplifier can be a lot louder than
that of the built-in speaker. Also it's probably possible to buy a portable
amplifier that can amplify particular frequencies, the above URL has a product
that might do something similar to what is required.
You could probably walk into a store like JB HiFi and tell them that you want
to have headphones that amplify higher frequencies more and find something
affordable off the shelf.
Another thing to consider is investigating the features of CyanogenMod and
other OS images that don't come from the manufacturer. I'm sure that someone
has done a build that allows frequency specific amplification to get the high-
But really if you have problems hearing a phone then the first thing you
should do is budget for a good pair of headphones, they make a significant
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