Reduced default velocity to 50

audio.py

@@ -91,7 +91,7 @@ def display_audio(pm: pretty_midi.PrettyMIDI, seconds=-1) -> display.Audio:
   return display.Audio(waveform_short, rate=_SAMPLING_RATE)
     
 
-def map_to_wav(song_map: pd.DataFrame, out_file: str, velocity: int=100) -> pretty_midi.PrettyMIDI:
+def map_to_wav(song_map: pd.DataFrame, out_file: str, velocity: int=50) -> pretty_midi.PrettyMIDI:
   """
   Convert "song map" to midi file (reverse process with respect to 
   midi_to_notes) and (optionally) save it, generating a PrettyMidi object in the process.
@@ -137,7 +137,7 @@ def map_to_wav(song_map: pd.DataFrame, out_file: str, velocity: int=100) -> pret
 def generate_and_display(model: VAE, 
                          out_file: str=None, 
                          z_sample: tf.Tensor=None, 
-                         velocity: int=100, 
+                         velocity: int=50, 
                          seconds: int=120) -> display.Audio:
   """
   Generate a song, (optionally) save it and display it.