diff --git a/clmr_magnatagatune.py b/clmr_magnatagatune.py
index 743edc7..428af7d 100644
--- a/clmr_magnatagatune.py
+++ b/clmr_magnatagatune.py
@@ -77,7 +77,7 @@ class ClmrMagnatagatune(NNOperator):
         outs = features.to("cpu")
         return outs.detach().numpy()
 
-    def __call__(self, data: List[AudioFrame]) -> numpy.ndarray:
+    def preprocess(self, data: List[AudioFrame]) -> numpy.ndarray:
         _sr = 22050
         audio_length = 59049