How to remove high pitch noise when it's not a straight line in spectrogram?

Audacity Help Forum Windows
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audacity
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Noise is 9000K-10000Khz. I usually use spectral edit multi tool when it’s a straight line.

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Remove it in ( say ~10) chunks, like a steps. Tedious, but currently the only way to do it in Audacity.
[ IIRC they’re working on a lasso for spectral tools … Spectral Selection Ideas - Audacity Wiki ]