[PD] Using iemlib as a filter

e skogen eskogen at usfamily.net
Mon Nov 10 23:54:09 CET 2003


if the creation of your objects is failing (the object has no inlets and 
outlets, though it should) you may want to double check the installation 
and make sure the libraries are being called by pd at start up.

the help files included in the iemlib package are in it's "iemhelp" 
folder by default, these should offer some introduction to using the 

i noticed a lot of the filters are in abstractions, so make sure these 
are put into Pd's path.

( see the download and readme at http://iem.kug.ac.at/~musil/iemlib/ )

Melissa Corso wrote:
> I'm trying to apply different types of filters to speech.  I know there are basic filters (lop, hop) available in PD but there is 
> also iemlib. What are the limitations of the filters in PD or the advantages of iemlib? I have created the pd_start.bat file yet was unable to find documentation for "absolute beginners" in iemlib. Does anyone know how to access this sort of information? 
> I want to implent a "real-time" band-reject filter. Thus there will be an adc~ and a dac~ with in between those two the filter with adjustable low-pass and high-pass cut-off frequencies. Other than that, the only other functionality that I need is for the cut-off 
> frequencies to be adjusted in pre-determined ways at certain points in time (either by PD changing the values after a given number of seconds or by PD changing the values in response to incoming midi/sysex messages). Iemlib offers many filters but we do not know how to actually use them in our application (for example just creating an object and 
> then typing the filter name with the ~ in that box does not work --there are no in and out connections from the adc~ and to the dac~ and the box appears as a comment box to PD rather than as an 
> object -- so it looks like that is not how it should be done.
> Any help would be greatly appreciated. 
> Melissa 
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