I would like to be able to play a sound file during a phone call so the person at the other end of the line can ear it clearly.
I know it is possible to play sounds on the line but i can't figure out how to cut the microphone at the same time so the person at the other side of the line don't ear ambiant noises..
Does someone knows how to do that? Or have any cue where I could look for informations?
Thank you for any help.
I very much doubt it is possible.
A telephone is an emergency communication device. The inability to make, receive or even clearly hear a phone call could literally kill someone. Consequently, the iPhone API strongly protects the integrity of the phone before all other functions.
Even if you did figure out a way, I doubt Apple would let it through. (Think of the liability issues for them and you!) The iPhone isn't a very small laptop, its a phone with a computer attached and the phone comes first.
You should always consider that when starting a design.
My question was not clear.
If you take a look at an application named "Escape Pod", it does just what I want to do, playing a sound while a phone call take place. But if you mute the phone's microphone, the person at the other end don't ear the sound anymore. I would like to be able to mute the mic on my phone but not the playing sound so the other person continue earing it, like putting the line onhold.
The only thing missing is how to cut off the mike without cutting the sound (or music)