Voice Transformation Android App Development

I'm looking for an experienced Android app developer to create a real-time voice-changing app. The primary function of this app is to transform a male voice into that of a 50-55 year old lady during voice calls. Key Features: - User Customization Options: The app should allow users to adjust certain voice parameters according to their preferences. - Voice Pitch Adjustment: A crucial part of the app is to let the users modify the pitch of their voice. This should be done via a manual adjustment slider, giving them full control over their voice transformation. - Natural Sounding Voice: While not a requirement, the inclusion of a natural sounding voice would be a significant plus. Ideal Skills: - Proficiency in Android app development - Experience with real-time voice transformation technology - Skills in designing user-friendly interfaces and customization options I would appreciate seeing examples of similar projects you've completed in the past.