Spectral Freq does not work, Noise reduction greyed out

Question

Trying to do the Audition tutorials, specifically the noise reduction one.

So it says to use Spectral Frequency Display, and points to the button to do so. But when I click the button nothing happens.

So then I thought, ok...... I am just trying to reduce noise on a recording, so next step is "Open the Noise Reduction effect" but when I do so, Effects > Noise Reduction / Restoration > all the top options, such as "Noise Reduction (process)" are greyed out.

What is going on?

SteveG_AudioMasters_ · Answer

I'd guess that you are trying to do this in Multitrack view, where it's not designed to work. NR as a process effect works on files, and you don't get to work on files in Multitrack view - it's essentially non-destructive, and NR is a file-destructive process - so you can only use it on individual files in Waveform view.

It may look like a file when it's displayed in Multitrack, but don't let that decieve you - that's just a placeholder. Multitrack view is nothing more than a glorified file player, and clips in it are nothing more than an instruction to play that bit of a file.

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