diff --git a/src/scgenerator/noise.py b/src/scgenerator/noise.py
index 76875d3..c9762e1 100644
--- a/src/scgenerator/noise.py
+++ b/src/scgenerator/noise.py
@@ -73,7 +73,7 @@ class NoiseMeasurement:
 
     @classmethod
     def from_time_series(
-        cls, time: np.ndarray, signal: np.ndarray, window: str = "Square", num_segments: int = 1
+        cls, time: np.ndarray, signal: np.ndarray, window: str = "Hann", num_segments: int = 1
     ) -> NoiseMeasurement:
         """
         compute a PSD from a time-series measurement.