I am wondering how to fix the zzzzzzzzz sound in my line in port when plugging my device in.
do I need to make a high pass or low pass or what to get rid of it?
I can hear this zzzzzzz sound even in the regular phone receiver forgetting for the moment when I rigged up the phone recorder circuit into the line in port....
What I think is happening is the line in port is amplifiying the tiny zzzzzz sound that the telephone mic is making probably.
The problem is I don't know what frequency to filter for or what can I do to get rid of it .
Attached is the sound clip of what I am hereing.
Please don't just dismiss my post because it is illegal to talk about telephone recording.... THIS POST IS NOT THAT IT IS ABOUT LEARNING HOW TO FILTER NOISE.... I HAVE THE SAME PROBLEM WITH MY INTERCOM CIRCUIT (ALOT OF SQUEEKING cause by the mic )
hopeful somebody can solve this problem for me and then I can apply what I have learned to fix the intercom circuit...
Thanks for any help
do I need to make a high pass or low pass or what to get rid of it?
I can hear this zzzzzzz sound even in the regular phone receiver forgetting for the moment when I rigged up the phone recorder circuit into the line in port....
What I think is happening is the line in port is amplifiying the tiny zzzzzz sound that the telephone mic is making probably.
The problem is I don't know what frequency to filter for or what can I do to get rid of it .
Attached is the sound clip of what I am hereing.
Please don't just dismiss my post because it is illegal to talk about telephone recording.... THIS POST IS NOT THAT IT IS ABOUT LEARNING HOW TO FILTER NOISE.... I HAVE THE SAME PROBLEM WITH MY INTERCOM CIRCUIT (ALOT OF SQUEEKING cause by the mic )
hopeful somebody can solve this problem for me and then I can apply what I have learned to fix the intercom circuit...
Thanks for any help
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