diff --git a/process_chunks.py b/process_chunks.py
index a055dc8..0ae328e 100755
--- a/process_chunks.py
+++ b/process_chunks.py
@@ -71,7 +71,6 @@ def process_chunk(filename):
             event_time_dt = chunk_start_dt + datetime.timedelta(seconds=event_offset)
             event_time = event_time_dt.strftime("%Y%m%d-%H%M%S")
 
-            base_name = os.path.splitext(filename)[0]
             flac_out = os.path.join(EVENT_DIR, f"{event_time}.flac")
             png_out = os.path.join(EVENT_DIR, f"{event_time}.png")
             sf.write(flac_out, clip, samplerate, format='FLAC')