Notch filter would only get rid of the fundamental frequency unless you notch at the harmonics also.
Best bet I would say is a high pass filter at say 500hz.
Reasonably simple to make with a resistor and capacitor... I think Sound On Sound magazine (which has archives on the web) had an article on how to build one...
The thing is, most of the codecs available in * should be high and low pass filtering it anyway...
Matt
Michael Welter wrote:
I live at 8000' in the Rockies. We have lots of woodpeckers--they especially love to drill 4" holes in the north side of my house.
They also like to drill on the arial telephone cables. Water then gets into the cable and causes a partial grounding on the circuits. This causes 60Hz hum to be heard on the line as well as a loss of amplitude. Qwest says tough s--t.
All three of my POTS lines have hum. They are connected to an Adtran 750 and my asterisk system (a testbench for commercial endeavors.)
The hum has always been bad on my end. Since I installed *, several of my callers have remarked about the hum.
So here's the question: Could a notch filter of sorts be installed in the codecs I use? Filter-out everything between, say, 55 and 65Hz?
Alternatively, is there a feature on the Adtran FXO card that deals with this?
Thanks for your help, Mike
_______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
_______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
