Using buffer~, stretch~ with live processing of vocals


    Jun 06 2017 | 9:48 pm
    I'm working on a live processing patch that can pitch shift vocals in real time, and one major hurdle I've encountered is that none of the pitch shifting objects in MaxMSP, including pitchshift~, retune~, or gizmo~ (within pfft~) are able to do formant shifting, which leaves the output signal sounding very chipmunky.
    Thankfully, it seems that stretch~ is able to do formant shifting, but it requires signal from a sound file in buffer~. Is there any way to get live input from a microphone into buffer~ so I can use stretch~?

    • Jun 07 2017 | 1:38 pm
      record~
      And if you need some extra help with zero-crossings (helpful when pitch shifting), I'll humbly point you to my own version...
      nw.recordplus~
      Cheers. -NW
    • Jan 13 2021 | 12:21 am
      I see, zero crossing is the big issue here
    • Jan 13 2021 | 5:34 pm
      Hello, It seems that record~ buffer~ couple has that click issue when the write/read locator passes from buffer end to buffer start, but It works fine if the buffer size is given in sampes, as power of 2. I don't know if somewhere that behaviout is described in detail.