Update 2025-04-24_11:44:19

convert_to_opus.py

@@ -0,0 +1,39 @@
+# convert_to_opus.py — Default voice pipeline: bandpass + compressor + limiter + gate
+
+import subprocess
+import os
+
+def convert_to_opus(input_path, output_path):
+    if not os.path.exists(input_path):
+        raise FileNotFoundError(f"Input file not found: {input_path}")
+
+    filters = [
+        "highpass=f=400",             # low-cut below 400 Hz
+        "lowpass=f=12000",            # high-cut above 12 kHz
+        "acompressor=threshold=-18dB",
+        "alimiter=limit=-1dB",
+        "agate=threshold=0.02"
+    ]
+
+    cmd = [
+        "ffmpeg", "-y",
+        "-i", input_path,
+        "-af", ",".join(filters),
+        "-ac", "1",
+        "-ar", "24000",
+        "-c:a", "libopus",
+        "-b:a", "40k",
+        "-vbr", "on",
+        "-application", "voip",
+        output_path
+    ]
+
+    try:
+        subprocess.run(cmd, check=True, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
+    except subprocess.CalledProcessError as e:
+        raise RuntimeError(f"FFmpeg conversion failed: {e}")
+
+    if not os.path.exists(output_path):
+        raise RuntimeError("Conversion did not produce output.")
+
+    return output_path