Scratching sound after amplifying or deleting a segment of audio? (3.1.3)

Hello everyone!

I have a waver in my voice at times when I sing (problem with my vocal cords - long story). Basically it consists of a note getting conspicuously softer for a brief moment. (Picture below.) It sounds really ugly. It’s very frustrating because it ruins takes where the vocals sounded exactly right in every other respect.
Just making them a bit louder with “amplify” gets rid of the waver, as does simply deleting them. The trouble is, with both these methods, after doing so I hear a faint scratching or clicking/popping sound at the place.

I am lining up the segments I cut out/amplify at zero crossings, and it’s not like I’m making the amplified parts massively louder than the parts they’re next to, so I don’t understand what’s causing this.

I was wondering if someone would be willing to explain to me why this is happening, is and if there is anything that can be done to solve it? (I have googled and googled, but all the keywords bring up is topics like “fix scratchy audio in audacity” &c &c, and since the audio quality itself isn’t scratchy, that doesn’t help me).
Any help is very much appreciated!
Thank you so much!!
Screen Shot 2022-04-03 at 8.34.25 PM.jpg

Monterey v. 12.2 but this has happened with previous OS’s as well. Sorry I forgot to include that! :slight_smile:

Sounds like a job for envelope tool

zoom-out then envelope-tool.gif

Oh my gosh, thank you SO MUCH!!! I am so happy I honestly might cry. I have spent hours trying to figure this out! You rock!

To think the answer was right there the whole time and I didn’t know it! It is soooo nice to finally have this solved, I can’t even explain :smiley:

P.S. Since your response was so helpful for this - would you happen to know why the scratching sound happens when I cut out small segments of a note? If so, is there a way to avoid that? :slight_smile: Either way, thank you!

Spectrogram view shows where an edit will produce an obvious (scratchy) glitch,
& where the edit will be undetectable …