The Professor, thank you for the reply.
I've cast a few invocations in my time, and written a few, so I understand about the length. I was just trying to imagine a protocol where it might have to be repeated five times. Also, I couldn't be sure from what you stated before whether the content of the Invocation is important to your claim.
But, a glimmer of progress here: the invocation is key! So, we have established at least one phrase that should be part of your claim: "...by means of a spoken Invocation of approximately five minutes in duration..." The Invocation (not necessarily by itself, but as a necessary component among others) has a paranormal effect. That is not to say that the Invocation is itself paranormal, any more than a dowser's rods are paranormal objects.
Now, you believe that the effect of this Invocation is to summon the presence of paranormal entities. But as has been explained, the presence or absence of paranormal entities, or the question of whether even an entity that is acknowledged by all to be present is in fact paranormal, are untestable. So, we must focus on the tangible and unambiguous effects that you claim the presence of the invoked paranormal entities will have. Focusing on that, we can leave the paranormal entities out of the claim altogether. We can instead state that the effects observed are caused (indirectly, but still caused) by the Invocation process itself. So we can append "... I shall cause..." to the previous phrase of your claim, and go on to state what unexplainable effects will be observed.
Now this part, you've already spoken about, so I'll just go ahead and jot down, "...audible sounds... ...to be recorded by electronic recording devices..." as part of the effects.
That's not quite enough, though, because recording audible sounds by electronic recording devices is far from unexplainable; that's what those devices are for after all. If the claim were that live snakes would be recorded by electronic recording devices (not the sound or images of snakes, but the actual snakes), we could probably stop there, but as it is we need something more.
So, we add, referring to the recording devices, something like ..."that are isolated acoustically, optically, and electromagnetically from all possible signal sources...". That's certainly something that wouldn't normally happen.
Except, "audible sounds" by itself is a little vague. Audible at what volume? Even a new blank tape will produce audible sounds if you turn the playback volume high enough. So, just to make sure you're not attempting to exploit this trivially obvious phenomenon, let's add just a bit of quantitative specification. Referring to the recorded sounds, we add: "...exceeding the recorded volume, as measured by a sound meter in decibels, of a 35-decibel reference sound recorded on the same tape immediately before the start of the invocation...".
Now, if you string those phrases and clauses together in the right order, add some punctuation, and you'd have something very much like a claim. I'm not going to do that for you because this is your claim and I'd rather encourage you go through the same thought processes yourself from the beginning and fill in your own answers.
Note that this is the claim not the protocol, so whether and how this claim can be tested is not addressed. Don't try to do that. State the claim first.
Respectfully,
Myriad