3 ms·

Practically, can this be used for real-time pitch shifting of an octave or two?

• tgv 4y ago
  Since you identify an instrument or voice by its formants (which are more or less at a fixed frequency), it's unlikely to yield good results over such a large range.
  • solarmist 4y ago
    I disagree. Sure, a naive approach wouldn't work (shift everything), but everyone's voice covers multiple octaves, so I'm sure plenty of people already know what changes need to happen if you sing in C2 but want to transpose it to C4, etc.
    • tgv 4y ago
      Of course there's some knowledge about that, but the approach in the link identifies the pitch by an NN (this step is not relevant to the current discussion) and then applies an FFT based method for pitch shifting that doesn't take any of it into account. So it'll shift formants as well, making voices and instruments change their character substantially.
      • solarmist 4y ago
        Oh, yeah, that specific approach wouldn't work. It wasn't obvious to me if you were being specific about the article's approach or not.
• eviledamame 4y ago
  Yes, that should be possible, the pitch shifting is very fast. I would expect the audio to sound pretty funky if you shift beyond one octave though