Voice Filter, Voice modification, Real time voice changer. Like talking tom

I created an app that allows users to record their voice and change how they sound with voice filters and share it (like talking tom). However i'm in need of new voice filters. I'll be happ y to buy some from anyone if you already have it. happy to use already existing filters that you have created in the past under this format.. would be happy to just copy and paste and would only concider people who have done it before and have voice filters i can use. The library currently being used it AVAudioFoundation. the sound format is caf. Encoding format: KAudioFormatLinearPCM AVSampleRatekey : 44100.0 AVencodreBitRateKey: 128000.0 AVNnumberofChannelsKey: 2 AVLinearPCMBitDepthkey: 16