ManJor,
Thanks for the reply and request for more information.
The feature that seems to be involved is in the Accessibility control systems, not Siri, Text to Speech, or other program.
I tend to use my phone to listen to music with iTunes and audiobooks with Libby.
I only recently signed up for the Family iTunes service. I am unfamiliar with the features. I had not realized that I had turned on the "download song when adding song to playlist" option. Turns out I had filled my drive with music files.
I think my phone was acting up because I had no memory left for a swap file (or whatever the iOS equivalent might be.) Anyway, I turned off the option, deleted the media files, and restarted the phone.
The Voice Control program hasn't acted up since then.
I think that solved the problem. Thanks for your interest.
Doc