Ukraine has great engineering brains.
They no need to manufacture pieces, just buy outside and assemble like the Iranian devils do.
A similar crappy drone but instead gnss guidance, sound guidance to follow and destroy shaheds-136.
The key to stop Iranian flying pistachios is doing another anti-system with the same or less price.
If you use high technology expensive pieces, then it's useless, because Shaheds pistachios are cheap.
"Digital Signal Processors" is a wide word too, so you must be more specific.
A USB sound card of 3 EUR is technically a "Digital Signal Processor" and you, of course, can't sanction it, because they are everywhere.
Every dedicated hardware processing task can be virtualized by software in a general purpose processor, everything, but it's more expensive and slower.