I am trying to remove garbage from my record. As you can see, I succeeded: the garbage in the left (1) dissapeared (2) when I used the Low Frequency Filter.
But now I have another issue: this spike (3). Are there any ways to remove it? Pencil tool didn’t help.
I’m guessing that you mean a “Low Pass” filter (rather than a “Low Cut” filter. Am I correct?
The “spike” is probably due to the sudden change from filtered to unfiltered audio. It is often possible to avoid that by ensuring that you start and end the selection in periods of silence before applying the filter. If it’s not possible to do that, then you may need to crossfade between the filtered and unfiltered selections (See: https://manual.audacityteam.org/man/creating_a_crossfade.html and https://manual.audacityteam.org/man/crossfade_clips.html and https://manual.audacityteam.org/man/crossfade_tracks.html)
I’m guessing that you mean a “Low Pass” filter
start and end the selection in periods of silence
There are no periods of silence.
you may need to crossfade
I have already tried. It didn’t help.
You didn’t do it right.
- Select the part that you want to filter
- “Edit menu > Clip boundaries > Split”
- Apply the Low Pass filter
- Select a small portion of audio across the split line, say 0.2 second before the split line to 0.2 seconds after the split line.
- Apply “Crossfade Clips”.
Thanks for your answers. It seems I have solved the issue: I used the Spectral Delete instead of LowPass Filter.