@carlosedubarreto Did you check if you need to download this feature under the help menu? I don't own SF Audio Studio but many Magix softwares have additional features that must be downloaded via the help menu. It could be the same for SF Audio Studio.
have tried spectral...sound forge ver 130...does not work!
Sorry for asking this, but did you installed spectralayer?
I can see from your print that the 2 options above (edit in spetralayer and send to spectralayer) are disabled.
In my soundforge its enabled.
And bythe way, for me, even having spectralayer installed, this "Edit in Spectralyer (ARA)" soenst seems to work. It opens the Spectralayer inside Soundforge, but it does not send the audio to the window, So I cant do anything.
But check the instalation of Spectralayer, because you will probably be able to edit using spectrum using the options above (not the ara version)