Jack James

I'm using the filtergraph~ with cascade to make an eq unit.

Works well except I can't work out what message to send to filtergraph~ in order to reset it to a neutral position.

filtergraph-reset

I'm not aware of a reset message. You can store a list of the filter coefficients with each filter set "flat" and then send that list in each time you need to reset filtergraph~.

If I instantiate filtergraph~ and send an "nfilters 3" message, I get "1. -1.997691 0.997723 -1.997691 0.997723 1. -1.996513 0.996586 -1.996513 0.996586 1. -1.99472 0.994884 -1.99472 0.994884" If I change the filter setting then send this list back into filtergraph~ it seems to reset. But then it also removes the filter GUI. (Seems like the "displaydot 1" message should restore the GUI, but I had trouble setting filter params with the mouse.)

Maybe it's better to store each filter setting individually as freq, gain, and q and then send these lists in using the "setparams" message. I haven't tried it yet. Would be curious to know what you find out.

If I instantiate filtergraph~ and send an "nfilters 3" message, I get "1. -1.997691 0.997723 -1.997691 0.997723 1. -1.996513 0.996586 -1.996513 0.996586 1. -1.99472 0.994884 -1.99472 0.994884" If I change the filter setting then send this list back into filtergraph~ it seems to reset. But then it also removes the filter GUI. (Seems like the "displaydot 1" message should restore the GUI, but I had trouble setting filter params with the mouse.) 

Maybe it's better to store each filter setting individually as freq, gain, and q and then send these lists in using the "setparams" message. I haven't tried it yet. Would be curious to know what you find out.


Ideally it'd be nice to be able to use a variety of preset messages but still be able to edit them once they were used.

Not sure if its best method, but if anyone else if having a similar issue with filtergraph~

I've found that using the preset object rather than sending a message into the inlet is the easiest way to solve the problem.

Not sure if its best method, but if anyone else if having a similar issue with filtergraph~ 

filtergraph~ reset