[PD] unchange detection

[Frank Barknecht]

Hi,

On Tue, Aug 17, 2010 at 10:00:05AM +0200, IOhannes m zmoelnig wrote:
> On 2010-08-17 09:57, Marek Vanbykow wrote:
> > Could i find some kind of object in pd who outputs a single bang when it
> > recieves nothing ?
> > Thanks for your help.
> 
> 
> [until]
> 
> but you have to start the detection by sending it a [bang( once.

Took me a while to get this. :)

But although it answered the question, maybe Marek was instead looking for a
way to output a bang after nothing has happened for a while, like a kind of
activity meter. At least that's a common need on many occasions.

For this, [delay] is a great object because it resets the scheduled delay
whenever it receives a new bang. A simple activity monitor could look like
this:

 [r is_there_something_happing????]
 |
 [bang]
 |
 [delay 1000]
 |
 [s nothing_happened_during_the_last_second!]

Ciao
-- 
 Frank Barknecht            Do You RjDj.me?          _ ______footils.org__