Since the voice control portion of my code doesn’t depend on Blynk (Amazon Echo ESP8266 control, with natural speech commands), my guess is that you could use it as-is, simply rerouting the Blynk stuff through your Pi server.
But to build on Gunner’s point, Blynk etiquette normally requires that one make a good faith effort (research, make, fail, pull a little hair out) before asking for help. 