Receive Rhasspy audio on UDP and detect wake words

UDP audio receive in a thread, with wake word detection.

detect.py

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+import io
+import queue
+import socket
+import threading
+import wave
+
+import numpy as np
+from openwakeword.model import Model
+
+CHUNK = 1280
+
+oww = Model()
+q = queue.Queue()
+
+
+def receive_udp_audio(port=12102):
+    """
+    Get audio from UDP stream and add to wake word detection queue.
+
+    Rhasspy sends 1024 x 16bit frames + header = 2092 bytes
+    Open Wake Word expects 1280 x 16bit frames (CHUNK)
+    """
+
+    sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+    sock.bind(("", port))
+    print(f"Listening on UDP port {port}")
+
+    audio_buffer = []
+    while True:
+        data, addr = sock.recvfrom(2092)
+        audio = wave.open(io.BytesIO(data))
+        frames = audio.readframes(1024)
+        audio_buffer.extend(np.frombuffer(frames, dtype=np.int16))
+        if len(audio_buffer) > CHUNK:
+            q.put(audio_buffer[:CHUNK])
+            audio_buffer = audio_buffer[CHUNK:]
+
+
+receive_audio_thread = threading.Thread(target=receive_udp_audio)
+receive_audio_thread.start()
+while True:
+    prediction = oww.predict(q.get())
+    for model_name in prediction.keys():
+        prediction_level = prediction[model_name]
+        if prediction_level >= 0.5:
+            print(model_name, prediction_level)

requirements.txt

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+openwakeword