diff --git a/teng_ml/util/transform.py b/teng_ml/util/transform.py
index db78cc6..971c704 100644
--- a/teng_ml/util/transform.py
+++ b/teng_ml/util/transform.py
@@ -1,5 +1,6 @@
 import numpy as np
 from scipy.interpolate import interp1d
+from torch import mul
 
 class Normalize:
     """
@@ -41,6 +42,15 @@ class NormalizeAmplitude:
         return f"NormalizeAmplitude(high={self.high})"
 
 
+class Multiply:
+    def __init__(self, multiplier):
+        self.multiplier = multiplier
+    def __call__(self, data):
+        return data * self.multiplier
+    def __repr__(self):
+        return f"Multiply(multiplier={self.multiplier})"
+
+
 class ConstantInterval:
     """
     Interpolate the data to have a constant interval / sample rate,