I'm wondering why it is that the output from bp~ continues for some seconds after the input signal to it is removed..
[ at least, it does on my linux box with pd 0.43 ]

[ osc~ 440 ]
|
| [200\
| /
| / [100\
| / /
| / /
[ bp~ ]
|
[ env~ ]
|
[52\

After disconnecting the osc~, the number box shows a slow decline in rms amplitude.
What algorithm is being used? It seems to get more unstable as "Q" increases .. is that how it should be?

Would there be any other eqivalent filter that does NOT exhibit this behaviour?