I don’t think they would cancel each other out in the way that frequencies can in physics homework problems. My understanding is that the Sapien fields are carried/embedded in the sound, so silence shouldn’t be an issue. There’s a new field that has a Rife aspect, so obviously Rife and morphic fields do not necessarily clash. Can there be an anti morphic field frequency? That makes sense. The energy body clearing/cleaning? field on Dreamseeds can clear away the effects of recent audios, so it’s not impossible that a just-so rife frequency could cause a problem, but I haven’t read anything in the forum where people have noticed that. Interesting question, though.
Here’s the Rife Field.
https://forum.enlightenedstates.com/t/the-smarter-rife/55458