add voice sample

README.md

@@ -1,2 +1,5 @@
 # wavelet-noise-reduction
 
+[Beleg (IPython Notebook)](Beleg%20Signaltheorie.ipynb)
+
+[Beleg (PDF)](Beleg%20Signaltheorie.pdf)

audio.py

@@ -9,7 +9,7 @@ def Audio(audio: np.ndarray, rate: int, name: str):
     amplitude = np.iinfo(np.int16).max
 
     write(filename, rate, (audio*amplitude).astype(np.int16))
-
+    return IPython.display.Markdown(f"[{filename}]({filename})")
     return IPython.display.HTML(f"""
         <audio controls>
             <source src="{filename}" type="audio/wav">