Sort of working

display.py

@@ -259,8 +259,21 @@ def _lerp_color(c1: tuple, c2: tuple, t: float) -> tuple:
     return tuple(int(c1[i] + (c2[i] - c1[i]) * t) for i in range(3))
 
 
+_PIPER_MODEL = '/home/dfr84/Python/JARVIS/en_GB-alan-medium.onnx'
+
 def _speak(text: str) -> None:
-    subprocess.run(['espeak-ng', '-s', '150', text], capture_output=True)
+    piper = subprocess.Popen(
+        ['piper', '--model', _PIPER_MODEL, '--output_raw'],
+        stdin=subprocess.PIPE,
+        stdout=subprocess.PIPE,
+        stderr=subprocess.DEVNULL,
+    )
+    raw, _ = piper.communicate(input=text.encode())
+    subprocess.run(
+        ['aplay', '-r', '22050', '-f', 'S16_LE', '-t', 'raw', '-'],
+        input=raw,
+        capture_output=True,
+    )
 
 
 def _handle_command(raw: bytes, n_ch: int, native_hz: int) -> None: