hello!

i've been messing around with puredata for some time now, mainly for interactive and arduino stuff. Now i am facing a much bigger project, and need some help to start with it...

basically, what i need to do is a live_sampling/realtime_fx engine which allow me to do the following:

-store audio data coming from adc into an array and play it at the same time
-freely moving play-header through the buffer withouth doppler artifacts
-granular stuff in realtime (mainly granular timestretching and the like)
-"freeze" the stored buffer and start playing it (also in granular flavour), stoping the audio input in the array
-multiply number of playheads (maybe this is something related with voices?)

and all this, if possible, using just vanilla objects, as it has to be used inside openframeworks by means of libpd and ofxpd...

We've been working on this project for a long time now, using different approaches. You can see some results here:

This was done some years ago using Reaktor's grain cloud delay, which was a very powerful and easy way of developing the audio side, but closed architecture and not able to integrate it in a single Ofx/C++ application, just OSC communication, so it's not an option anymore... now with ofxpd we can develop it in pure data and integrate it with openframeworks, which is very good!

I've been messing around with some examples i found on this forum, with partial nice results, so first steps are already done and got (kind of) familiarized with tabread~, tabwrite~, vd~, delread~, delwrite~...

I would like to ask if someone has been doing something similar, and can point me in the right direction?

thank you!

i just came across the great collection of abstractions by rjdj
https://github.com/rjdj/rjlib

it looks like there's a bunch of patches on there tat can be a good starting point.
I specially liked the e_graindelread abstraction, which is basically a delay line with granular features and clickless variable delay time...

My main aim now is to figure out how to store the buffer content in a table at any moment... i think it is not possible out of the box using delwrite~, so i guess i'll have to do some kind of workaround...

by the way,
playmodes AV sampler project is on github, if you want to check it out:
https://github.com/eloimaduell/ofxPlaymodes

Hey playmodes, nice to see your project here!
I have made something similar a couple of years ago. I remember I used pd-extended. But I think it's possible to do it also in pd-vanila (or you have to compile external for your libpd version).
This night I will check and let you know.
cheers
husk

Hey Husk,
thanks for your help!

i moved some questions to this other post:

http://puredata.hurleur.com/sujet-8456-delay-using-tabread-tabwrite

and i managed to start everything... it looks like it's working now reasonably well,
i'm so happy about the libpd binding... sooo powerfull!

i'll keep you updated!