This might be in the wrong section entirely.

I am trying to replicate a voice modulation that I have heard, voice clips can be found here: https://www.youtube.com/watch?v=uWVPP_lUL38

I think it can be done with the use of ring modulation and an echo but I cannot seem to get it to sound right.

Does anyone have any recommendations, suggestions or ideas on how to do this?

Thank you in advance.