added wav_recorder.py

wav_recorder.py

@@ -0,0 +1,29 @@
+import wave
+import numpy as np
+
+FIFO_PATH = "/tmp/esp32_audio"
+OUTPUT_FILE = "recorded_audio.wav"
+
+SAMPLE_RATE = 16000
+CHANNELS = 2        # stereo from ESP32
+BYTES_PER_SAMPLE = 2
+
+# configure WAV writer
+out_wav = wave.open(OUTPUT_FILE, "wb")
+out_wav.setnchannels(CHANNELS)
+out_wav.setsampwidth(BYTES_PER_SAMPLE)
+out_wav.setframerate(SAMPLE_RATE)
+
+with open(FIFO_PATH, "rb") as f:
+    print(f"Recording from {FIFO_PATH} into {OUTPUT_FILE}...")
+    try:
+        while True:
+            data = f.read(8000)  # ~0.125s stereo
+            if not data:
+                continue
+            out_wav.writeframes(data)
+    except KeyboardInterrupt:
+        print("\nStopping recording.")
+    finally:
+        out_wav.close()
+        print(f"Saved {OUTPUT_FILE}")