How to change the voice in an audio recording?

Question

Audio

Hello, tell me with what program (console) you can change the voice on an audio recording,
is there a way to do this through ffmpeg? let's say what filter thread to impose on the audio recording that will make the voice unrecognizable.
The bottom line is that a person will send voice to the server where it will be processed (than a thread) so that it would not be possible to find out whose voice.