james d

- drop a folder full of audio files into a patch

- load one of those files at random into a buffer

- have gen~ play back a loop from that buffer (with the ability to change start position and length of loop)

Now I want the ability to play back the loop at slower speeds, like 50%, tape style (with the pitch dropping, etc...)

Normally I have done this outside of gen~ using play~ and passing it a message like "start 1000 3000 4000", which works well, except there can be clicks which I am hoping would be easier to fix in gen~?

I am using "counter" and "%" so far in gen~ to make the loop, but I am guessing that is the wrong approach for different playback speeds...

Here is my patch so far, any advice would be appreciated. Thanks!

bpatcher

loadmess

outlet

prepend

route

dropfile

textedit

comment

button

dac~

flonum

message

gen~

peek

counter

buffer

buffer~

umenu

random

I wrote a patch that allows me to: 
- drop a folder full of audio files into a patch
- load one of those files at random into a buffer
- have gen~ play back a loop from that buffer (with the ability to change start position and length of loop)

Here is my patch so far, any advice would be appreciated.  Thanks!

Hi all,
I wrote a patch that allows me to: 
- drop a folder full of audio files into a patch
- load one of those files at random into a buff

gen~-buffer-playback-speed-no-clicks

1. Connecting the `sig~` to the `counter`object does seem to have the playback behavior I want, however, I hear something like a bit crushing on a slower speeds... Is there a better way to do this?

2. I added some attack/release ramps to the looper to remove clicks. My logic feels kinda silly here because I don't know how to write an "&&" condition in `gen~`. Is this the best strategy for click removal?

1.  Connecting the `sig~` to the `counter`object does seem to have the playback behavior I want, however, I hear something like a bit crushing on a slower speeds... Is there a better way to do this?

2. I added some attack/release ramps to the looper to remove clicks.  My logic feels kinda silly here because I don't know how to write an "&&" condition in `gen~`.  Is this the best strategy for click removal?

everything you're doing is on the right track 👍

if you go into gen~ and select the 'peek' object, then look through the reference(icon on the right sidebar; alternately you can open the reference page in a separate window by right-clicking on the 'peek' object and selecting 'open peek reference' from the pop-up menu), and there you can check out the 'interp' attribute(select the attribute name in the sidebar, and it's description will read in the panel just below the list of attributes/messages).

'cubic' interpolation is generally enough for this kind of thing, but you can try the others to see what you'd like best.

there's an '&&' object in gen~ 😄 ...no worries, i've put it in below so you can see that and the interp i was mentioning above. this is a great strategy for click-removal, it's simple and effective(it's basically the famous grooveduck patch rewritten in gen~... nice work here!)

this will create linear ramps, so at some point you could look into ramps which have a more sinusoidal curvature(you'd basically map the linear ramp to a sine/cosine curvature) but this as you have it so far seems to work fine for me. if you notice no clicks whatsoever when you play, i'd stick with it.

i added a little extra description to help you understand other options for playback, it's not important, but just to help get more familiar with what's available and how getting to know attributes for everything will help traverse what seems like a very confusing landscape sometimes:

everything you're doing is on the right track 👍
if you go into gen~ and select the 'peek' object, then look through the reference(icon on the right sidebar; alternately you can open the reference page in a separate window by right-clicking on the 'peek' object and selecting 'open peek reference' from the pop-up menu), and there you can check out the 'interp' attribute(select the attribute name in the sidebar, and it's description will read in the panel just below the list of attributes/messages).
'cubic' interpolation is generally enough for this kind of thing, but you can try the others to see what you'd like best.

there's an '&&' object in gen~ 😄 ...no worries, i've put it in below so you can see that and the interp i was mentioning above. this is a great strategy for click-removal, it's simple and effective(it's basically the famous grooveduck patch rewritten in gen~... nice work here!)
this will create linear ramps, so at some point you could look into ramps which have a more sinusoidal curvature(you'd basically map the linear ramp to a sine/cosine curvature) but this as you have it so far seems to work fine for me. if you notice no clicks whatsoever when you play, i'd stick with it.
i added a little extra description to help you understand other options for playback, it's not important, but just to help get more familiar with what's available and how getting to know attributes for everything will help traverse what seems like a very confusing landscape sometimes:

hmmmm....🤔... on a closer look, the looping is off in your implementation(i'm not even sure why that is, it looks like it should work perfectly to me...), but this seems a more efficient implementation anyways because you can get rid of the '%' altogether....

edit: aww crap, now i see you'll need to add an extra bit to remove clicks on file selection 😂 ok added something in for that, too:

hmmmm....🤔... on a closer look, the looping is off in your implementation(i'm not even sure why that is, it looks like it should work perfectly to me...), but this seems a more efficient implementation anyways because you can get rid of the '%' altogether....
edit: aww crap, now i see you'll need to add an extra bit to remove clicks on file selection 😂 ok added something in for that, too:

Wow, thanks so much! The "cubic" interpolation sounds much better to my ears. I really appreciate the help, and the extra comments. Learned a lot here! Strange that `%` doesn't work, I'm not sure I would have looked there for a bug.

Wow, thanks so much!  The "cubic" interpolation sounds much better to my ears.  I really appreciate the help, and the extra comments.  Learned a lot here! Strange that `%` doesn't work, I'm not sure I would have looked there for a bug.

i'm not sure which part didn't work either, whether it was 'counter' or '%', but '%' involves a divide operation(or they may have implemented something more efficient than divide internal to the '%' code), in general, if you can avoid it with something simpler and more precise, there will be a slight gain in efficiency(now that i think of it, it might be that you needed to add 1 to the right-inlet of '%' beyond the loop-length/buffer-length, otherwise '%' wouldn't count all the way to that maximum, only to 1 below it... but not sure... you can try it if you'd like). 

Strange that `%` doesn't work, I'm not sure I would have looked there for a bug.

i'm not sure which part didn't work either, whether it was 'counter' or '%', but '%' involves a divide operation(or they may have implemented something more efficient than divide internal to the '%' code), in general, if you can avoid it with something simpler and more precise, there will be a slight gain in efficiency(now that i think of it, it might be that you needed to add 1 to the right-inlet of '%' beyond the loop-length/buffer-length, otherwise '%' wouldn't count all the way to that maximum, only to 1 below it... but not sure... you can try it if you'd like). 

Happy to help, best of luck :)


Now that I have this looper working, I am wondering if there is a way to make the looper restart at 0? Is there a way to set `history` to zero from a message or a button somehow?

Now that I have this looper working, I am wondering if there is a way to make the looper restart at 0?  Is there a way to set `history` to zero from a message or a button somehow?

Gen~ Buffer Playback Speed, no clicks