Just skimmed the papers. Based on the first, I think you need the location of the target (which could be moving) for this mechanism to work. (The target is the 'epicenter').
Wondering if having a voice signature of the target would allow for fishing for the target's voice if location is not precisely known.
p.s.s. the papers are authored by scientist named in the OP.
https://www.researchgate.net/publication/357008566_Time_shif...
p.s.
Just skimmed the papers. Based on the first, I think you need the location of the target (which could be moving) for this mechanism to work. (The target is the 'epicenter').
Wondering if having a voice signature of the target would allow for fishing for the target's voice if location is not precisely known.
p.s.s. the papers are authored by scientist named in the OP.