diff --git a/audio_filters/ema_filter.py b/audio_filters/ema_filter.py
index 2786cd110..12b62b318 100644
--- a/audio_filters/ema_filter.py
+++ b/audio_filters/ema_filter.py
@@ -7,11 +7,12 @@ https://en.wikipedia.org/wiki/Moving_average
 import numpy as np
 from typing import List
 
+
 class EMAFilter:
     """
     A class for applying an Exponential Moving Average (EMA) filter
     to audio data.
-    
+
     Attributes:
         alpha (float): Smoothing factor where 0 < alpha <= 1.
         ema_value (float): Stores the most recent EMA value
@@ -24,7 +25,7 @@ class EMAFilter:
 
         Parameters:
         alpha (float): Smoothing factor where 0 < alpha <= 1.
-        
+
         Raises:
             ValueError: If alpha is not within the range (0, 1].
         """
@@ -47,7 +48,7 @@ class EMAFilter:
 
         Example:
         >>> ema_filter = EMAFilter(0.2)
-        >>> np.allclose(ema_filter.apply([0.1, 0.5, 0.8, 0.6, 0.3, 0.9, 0.4]), 
+        >>> np.allclose(ema_filter.apply([0.1, 0.5, 0.8, 0.6, 0.3, 0.9, 0.4]),
         ...             [0.1, 0.18, 0.304, 0.3632, 0.35056, 0.460448, 0.4483584])
         True
         """
@@ -62,6 +63,8 @@ class EMAFilter:
             ema_signal.append(self.ema_value)
         return np.array(ema_signal)
 
+
 if __name__ == "__main__":
     import doctest
+
     doctest.testmod()