initial commit

server/asr.py

@@ -0,0 +1,25 @@
+import numpy as np
+
+
+class ASREngine:
+    """Wraps Qwen3-ASR for speech-to-text transcription."""
+
+    def __init__(self, model):
+        self.model = model
+
+    def transcribe(self, audio_16k: np.ndarray) -> str:
+        """Transcribe a complete utterance.
+
+        Args:
+            audio_16k: Float32 numpy array at 16kHz sample rate.
+
+        Returns:
+            Transcribed text string.
+        """
+        results = self.model.transcribe(
+            audio=(audio_16k, 16000),
+            language=None,  # auto-detect
+        )
+        if results and results[0].text:
+            return results[0].text.strip()
+        return ""