Audacity Forum

... all is OK!
I get back my usual environment.
Problem solved.

Thank you!

Quite right now, no more noise heared... (what a bad pupil i am )...

nevertheless the blue lines at max amp on the audacity record diagram are always present...
i don't see that on yours nor viewing other sound files.

What does it means?

Thank ou very much

Hello, Whatever is the source of recording (sound from Windows Media Player or from an external microphone) there is a noise? or echo? Larsen?) on the records (records attached, one with no source applied). I think in a HF oscillation because on audacity record diagram, extreme amplitudes are blue (...