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  Technical question about cell-phone app  (Read 1270 times)
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Offline chaimav

Junior Newbie

Java games rock!

« Posted 2004-07-21 23:51:11 »

Can anyone tell me if this is possible:
I want to write or (have written) an aplication for a cell phone that can process the soud recieved by a phone during the call. I want to be able to demodulate information sent using the following specs:
Use 1800 hertz and 1400 hertz frequencies
Use Baudot character table
Use 5 bits, 1.0 start, 1.0 - 2.0 stop bits

found at

I am also looking for volenteers to help with this project as it is an aid for the Deaf / Hard-of-Hearing  Wink
Offline shmoove

Junior Devvie


« Reply #1 - Posted 2004-07-22 06:21:55 »

It's not possible with Java.
I'm pretty sure you could do something like that with a Symbian phone in C/C++.

Offline chaimav

Junior Newbie

Java games rock!

« Reply #2 - Posted 2004-07-22 08:08:56 »

It's not possible with Java.

Forgive my ignorance but can you elaberate on that statement? Huh
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Offline shmoove

Junior Devvie


« Reply #3 - Posted 2004-07-22 09:55:47 »

The MIDP API (which is the profile used on 99% of cellphones) doesn't have any methods that would allow you to get the sound from the phone call.

Offline chaimav

Junior Newbie

Java games rock!

« Reply #4 - Posted 2004-07-22 11:02:22 »

Cry UGH!!
Thanks for your replies.
This is an application that I would really like to see done. Can you give me some advice or steer me in the right direction to other platforms where this can be done.
Which platforms are the most widely available, cheapest, have the most future and such....
Offline shmoove

Junior Devvie


« Reply #5 - Posted 2004-07-22 13:23:10 »

For something like that cheapest is going to be a problem, but I think the most widely available platform with those capabilities would be the Symbian platform.

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