Function DENOISE not registered

Hello,

when I call my conference, I see this error in my logs:

   ERROR: Function DENOISE not registered

here is snippet from extensions.conf

   ...
   same => n,Set(CONFBRIDGE(user,announce_join_leave)=yes)
   same => n,Set(CONFBRIDGE(bridge,record_conference)=yes)
   same => n,Set(CONFBRIDGE(bridge,record_file)=/home/asterisk/file.wav)
   same => n,ConfBridge(1000)
   same => n,Hangup()

and I have "denoise = yes" in confbridge.conf:


how do I fix this?
What do I have to do to "register" denoise ?

thanks,


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