Delete selection

Filters out the frequency band you have marked in a spectral selection, leaving the audio above and below it in place. It is the spectral equivalent of deleting a region — useful for taking out a whistle, a beep or a band of noise that sits clear of the material you want to keep.

Where to find it

Effect → Spectral tools → Delete selection.

There are no settings: the frequencies to remove come entirely from the selection.

Making the selection

The track has to be showing a spectrogram before you can make a spectral selection — see Toggle Spectral View. Drag in the spectrogram to mark a time range and a frequency range, then apply the effect.

Notes

The filtering is done with a windowed-sinc kernel, which gives a steeper, cleaner edge than a simple notch, and a 10 ms fade at each end of the selection blends the result into the surrounding audio.

Very narrow selections are widened slightly around their centre frequency so the filter remains workable, and there are practical limits at the extremes: frequencies very close to zero or to half the sample rate cannot be filtered, and tracks with a sample rate below 100 Hz are not supported.

Removing a band also removes whatever wanted sound occupied it, so this works best where the unwanted sound is tonal and does not overlap the material you are keeping.

Last updated 3 September 2026