Audacity Forum

Hello guys, can you give me some help?
I just downloaded a .flac CD (which I have the actual CD), but when I look it through Audacity spectrogram there is weird frequency around 16k. It goes through the entire CD. Is it possible it's normal or is it a rip failure? Is there anyway way I can remove all other frequencies to listen just this specific frequency? Thanks!

rafaelguedes wrote: Is it possible it's normal or is it a rip failure?

It's possible that it is normal. It is quite common for modern recordings to show such things, but generally they are inaudible.

rafaelguedes wrote:Is there anyway way I can remove all other frequencies to listen just this specific frequency?

Much easier to do it the other way - remove a narrow notch at 16 kHz and see if you can hear any difference.

To remove a narrow notch you would normally use the Notch Filter. http://manual.audacityteam.org/o/man/notch_filter.html
I notice that only goes up to 10,000 Hz on the slider, but you can enter higher frequencies by typing into the text box.
Use a fairly high "Q" setting, say around 8 or 10.Check the spectrogram track view to ensure that you hit the correct frequency.