title: How to save extracted pitch values in a csv file?
body: <p>Well I think I should mention it that it's the very first time I'm trying Audio signal processing in Python. I have an audio data set and I am extracting pitch features using Aubio library, and MFCC feature using the python_speech_features library in Python. The thing is, for a single audio file, I am getting around 84 valued vector for the pitch and 12 valued feature vector for MFCC. </p>
  
  <p>Image of extracted pitch feature vector
  <a href="https://i.stack.imgur.com/UYtKK.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/UYtKK.png" alt=""></a></p>
  
  <p>So how do I save all these so many values in a single csv file? I have around 700 audio files separated in different directories wrt to emotions. Should I take the mean of all of these values and save them wrt the audio file in a csv? Like this:</p>
  
  <p><a href="https://i.stack.imgur.com/LUKAn.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/LUKAn.png" alt=""></a></p>
  
  <p>Also, how would I used these values for classification then? 
  Any help would be much appreciated, Thanks.</p>