[PD] readanysf~ control output of seconds played

[Claude Heiland-Allen]

Hi,

Gerda Strobl wrote:
> Dear list,
> 
> I need to send a 1-message 3 seconds before the file stops--so I compare 
> the actual time with the overall time of the (soundfile -3)---the 
> problem is now that sometimes the [==] message never sends a 1 because 
> the left input sometimes reaches now value that equals (filelength-3).
> 
> print: 14.7215
> print: 16.1844
> print: 17.6472
> 
> soundfilelength=18.49
> int(soundfilelength-3)=15
> 
> when the output of the seconds of readanysf~ is like above--it doesn't 
> equal 15
> 
> How can I quickly solve that?

I would get a single bang from the (variable) play time and the (fixed) 
total time using [>=], [change], and [select 1].  The important thing is 
the ">=", because float "==" is inherently inaccurate, due to rounding 
errors and other limitations of floating point numbers.  ">=" is useable 
   as a trigger source when you know that the variable is steadily 
increasing.


Claude
-- 
http://claudiusmaximus.goto10.org