Talking Tom like Voice modulation Engine for Android

we are looking for voice modulation engine that works like talking tom cat app for android. Engine should be capable of identifying when to record and when to playback the recording and also it should have capability to change the voice modulation like Parrot, Cat, robot, baby...., i mean to say it should have the ability to tweak the voice to suite to the characters. Requirements: 1. Voice engine software should have the ability to detect when user is talking to the app and start recording the voice 2. Voice engine software should have the ability to detect when user is done with talking and it should be able to playback 3. voice engine software should have the ability to tweak the recorded voice to suite the character