errors when complile the iir example

[MaurinElectroTextile]

Arduino : 1.6.11 (Linux), TD: 1.30-beta3, Carte : "Arduino Duemilanove or Diecimila, ATmega328"

iirFilter:6: error: cannot declare variable 'Filter' to be of abstract type 'iirFilter'
 iirFilter Filter;
           ^
In file included from /tmp/arduino_modified_sketch_237102/iirFilter.ino:4:0:
/home/chevrette/Documents/Arduino/libraries/Filter/iirFilter.h:9:7: note:   because the following virtual functions are pure within 'iirFilter':
 class iirFilter : public Filter
       ^
In file included from /home/chevrette/Documents/Arduino/libraries/Filter/iirFilter.h:7:0,
                 from /tmp/arduino_modified_sketch_237102/iirFilter.ino:4:
/home/chevrette/Documents/Arduino/libraries/Filter/Filter.h:16:18: note: 	virtual void Filter::printSamples()
     virtual void printSamples()=0;
                  ^
exit status 1
cannot declare variable 'Filter' to be of abstract type 'iirFilter'

Ce rapport pourrait être plus détaillé avec
l'option "Afficher les résultats détaillés de la compilation"
activée dans Fichier -> Préférences.