How to remove 4700 hz freqencies

Audacity 3 Help Forum Windows
1

Hi, How can you remove frequencies of 4700 hz. How did you do this?

2

notch filter.

3

You need to use notch filter.

4

If you mean remove all frequencies above 4700Hz, you need a low-pass filter.
If you mean remove all frequencies below 4700Hz, you need a high-pass filter.