Is there a library in C # that changes the timbre of a person’s voice

Question

I am looking for a library that changes the timbre of a human voice. I want to make small changes, such as: changing the deep male voice a little higher (something like changing the bass to tenor).
I think that changing the voice in a wider range - changing the male voice to the voice of a woman is too difficult, and there is no good tool for this, am I right?

Answer 1

SoundTouch is an open source audio processing library for changing tempo, pitch, and playback of audio streams or audio files.

I think Pitch change is what you are looking for ...

Answer 2

, , : http://www.ambiera.com/irrklang/