Updates to enable CUDA in piper

patch/process.py

@@ -131,7 +131,6 @@ class PiperProcessManager:
                 "--output_dir",
                 str(wav_dir.name),
                 "--json-input",  # piper 1.1+
-                "--cuda",
             ]
 
             if voice_speaker is not None:
@@ -149,6 +148,8 @@ class PiperProcessManager:
             if self.args.noise_w:
                 piper_args.extend(["--noise-w", str(self.args.noise_w)])
 
+            if self.args.cuda:
+                piper_args.extend(["--cuda"])
 
             _LOGGER.debug(
                 "Starting piper process: %s args=%s", self.args.piper, piper_args
@@ -170,4 +171,4 @@ class PiperProcessManager:
         # Update used
         piper_proc.last_used = time.monotonic_ns()
 
-        return piper_proc
+        return piper_proc