Hello, is there a way I can dynamically modify sox effects while sox is
running? I want to have a way to add effects to my voice (pitch
modulation/reverb/etc.) and pipe that to OBS and Mumble. Is there another
application that does this?

The current command I am using is:
  sox -t pulseaudio default -t pulseaudio null reverb pitch ...
Then I record from Null Source using pavucontrol.