updated skeleton with true data

worker/engine/audio_export.py

@@ -0,0 +1,19 @@
+from pydub import AudioSegment
+import io
+
+def convert_audio(raw_bytes: bytes, fmt: str):
+    # raw mono 32-bit float fake waveform
+    seg = AudioSegment(
+        raw_bytes,
+        frame_rate=22050,
+        sample_width=4,
+        channels=1
+    )
+    buf=io.BytesIO()
+    seg.export(buf, format=fmt)
+    mime={
+        "wav":"audio/wav",
+        "mp3":"audio/mpeg",
+        "ogg":"audio/ogg"
+    }.get(fmt,"audio/wav")
+    return buf.getvalue(), mime