Klipp

I tried to build a looper similar to stompboxes like line6 dl4.

I want to record, playback at double speed and overdub. The overdubbed material should keep speed/pith until I switch back to normal speed.

I used groove for playback. Changing the speed works fine but the overdubbed material is directly played back in the changed speed.

I tried to build a looper similar to stompboxes like line6 dl4.
I want to record, playback at double speed and overdub. The overdubbed material should keep speed/pith until I switch back to normal speed.
I used groove for playback. Changing the speed works fine but the overdubbed material is directly played back in the changed speed.
Any idea how I can realize this?

m4l-looper-overdub-in-original-pitchspeed-while-playback-speed-is-different

I built a looper with poke~ that works good. but there is a problem with reverse (-0.5) and double speed (2). for the double speed problem I found a workaround recording the first loop at half speed.

you should download ipoke~ and use it in overdub mode 

http://pierrealexandretremblay.com/no-tv//MaxMSP/

i am also working an external that does similar varispeed recording, but using 4 point interpolation instead of linear

it has a sound on sound knob that allows you to determine the rate at which old sounds decay in the loop -

also uses nonlinear transfer function in the buffer write so that it achieves 'tape saturation' instead digital clipping, and can handle inputs greater than 1, less than -1

i use it now live, but hopefully i'll be able to post it soon?

you should download ipoke~ and use it in overdub mode http://pierrealexandretremblay.com/no-tv//MaxMSP/

i use it now live, but hopefully i'll be able to post it soon?


I'll as soon as possible. Hope it will resolve the reverse and double speed problem. Do you have any idea about these problems? Is this behaviour normal? Should I somehow filter or manipulate the signl (right outlet of groove) that I'm using to provide the playback/recording position index?

I'll as soon as possible. Hope it will resolve the reverse and double speed problem. Do you have any idea about these problems? Is this behaviour normal? Should I somehow filter or manipulate the signl (right outlet of groove) that I'm using to provide the playback/recording position index?
Thanks!


no - the ipoke~ object allows for varispeed recording - that is, if you record a C3 at 'normal' speed, and then double the speed - it will sound as a C4

then, if you record another c3, you will have a octave [c3 and c4} at double speed - if set back to normal speed, you will have a c2 and c3 ---

if you download the ipoke object and play with the example, i think you will find it very intuitive! just adjust the buffer size and phasor~ to the loop length you need

Sorry to necro this thread but did you ever finish/share that external tristan? (are there no PMs on this forum? I looked but couldn't find a way to send a direct message).

M4L looper - overdub in original pitch/speed while playback speed is different