are voices just subvocal speech
This seems to be the case for some, sometimes. I know that when my hallucinations/voices just start to come about, it is not always that clear wheather I am actively imagining myself what they could say (using subvocal inner speech), recollecting what they said in the past (using again, subvocal inner speech), or whether I am having ‘new’ hallucinations/voices (also using it??).
For some people, it has been documented, voices might stop when the patient speaks, or sometimes even just opens his mouth without speaking, or when ‘humming’ some tone, not even words. There seems to be some competition between the activity of the little muscles we actually speak with, and the activity of the voices. But sadly, I found these strategies not working for me. Worth a try though.