Hi,

Been investigating the driving a table with vline method, and I was wondering a couplle of things...

I've been using to metro to trigger the vline but i seem that its disadvantage is that it has to wait for the next bang to reflect any real time changes. Whats the way round this? Having the metro reset every time its frequency is altered leads to the ramp restarting...

thanks

read this thread about how Pd deals with logical time and dsp:

http://lists.puredata.info/pipermail/pd-list/2007-05/049788.html

also, if you have an example patch, it would help - i'm not sure what you mean by "driving a table".

if you're worried about metro only updating its period at the next bang, you could use a frequency number to vline~ (for subblock accuracy, if your frequency is a signal already don't bother with this) to phasor~ combo instead of a metro and vline~ - the problems here are setting the phase of a phasor~ isn't subblock accurate, moreover getting a bang from the falling edge of a phasor~ isn't subblock accurate either, and you wouldn't be able to sync a metro to it accurately because of the first sentence in this paragraph....

one solution is to do everything with signals, with things like samphold~, but that can be cpu expensive....

what you could probably do is make a vline~ ramp that goes from 0 to 1 over a period longer than you will ever need. say about 1000 seconds. (1 000 000ms)

then you can scale the output of that vline~ with a [*~ ] object

you can also add a [+ ] object going into the [*~ ] for offsets. ie [+ 0.25] gives you a 25% offset

i think that's what i did. been ages since i played with loops.

cheers for the tips folks!

heres the patch...

S

http://www.pdpatchrepo.info/hurleur/vline~_sampler.pd

by the way. as a general rule with pd.

avoid spaces in filenames!

i have a 6gig sample library and none of the samples have spaces in their names. none of my pd patches have spaces in their names.

makes things a lot easier cos pd doesn't deal with spaces so well.

@hardoff said:

by the way. as a general rule with pd.

avoid spaces in filenames!

i have a 6gig sample library and none of the samples have spaces in their names. none of my pd patches have spaces in their names.

makes things a lot easier cos pd doesn't deal with spaces so well.

oh...I usually use _ 's

must have gone unnoticed that one :/