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Thread: play 1/2 second of audio at x2 x3... speed

  1. #1
    Senior Member
    Join Date
    Dec 2018

    play 1/2 second of audio at x2 x3... speed


    I working on a an audio effect that would transpose the attack of a musical note a few octaves up or down in real time.
    I feed the audioBoard line input of a teensy 3.6 with a signal coming from a mic + an audio mixer.
    I detect the attacks of an wind instrument using the peak object.

    Now I would like to shift the pitch of the attacks up and down. When an attack is detected, I need to fill small buffers and play them back at a different speed ( x2 x4 or /2 /4 .... ).
    I don't know how to do it. I don't need time stretching but only pitch shifting.


  2. #2
    Join Date
    Sep 2020
    Hi Emmanuel63,
    I'll refer you to a thread I OPed here.

    It was a dead end for me, but I think the solutions offered could be what you are looking for. I hope this helps.


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