How to do voice morphing to a phone call on android? [closed]

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I'm develop an android application which needs to change the callers voice to chipmunk voic开发者_运维问答e in real time processing. ie.like Whenever someone calls me, i want to hear their voice in chipmunk voice. I dont find any control or any api to do that in android. Also i dont know how to stop the voice from native phone receiver. Is this feature possible in android? Please give me show ideas to do the same.

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You don't, unless you mean VOIP calls implemented outside of the framework rather than mobile network calls.

Android does not provide access to the in-call audio. On (many? all?) present devices that's thought to actually be a hardware limitation or at least buried in vendor-proprietary code for the radio processor, and so not alterable from the android/linux side even if you root, install a customized build, etc.