No filters in audacity:
bandpass
bandstop
notch
lowpass
highpass
please use opencl.
No filters in audacity:
bandpass
bandstop
notch
lowpass
highpass
please use opencl.
Notch: https://manual.audacityteam.org/man/notch_filter.html
Low pass: https://manual.audacityteam.org/man/low_pass_filter.html
High pass: https://manual.audacityteam.org/man/high_pass_filter.html
WC
At the time I could not find them in the menus, however I find their implimentation poor, they should have an option for multi frequency filtering. One dialog box ie low pass filter should have optional frequency bands bands to apply a filter multiple times with only one shot. However it will be slow because everything is still done on cpu.
I would also like to add there is no band pass filter (very usefull) and low, high and notch do not have settable q values.
There are some additional filters here: http://wiki.audacityteam.org/wiki/Nyquist_Effect_Plug-ins#Filters
Audacity also ships with this set of filters, but not enabled by default: http://manual.audacityteam.org/man/classic_filters.html
There’s also this set of filters: https://forum.audacityteam.org/t/high-pass-low-pass-band-pass-band-cut-filter/28257/1
All of those are possible via audacity’s spectral-selection tools …
https://manual.audacityteam.org/man/spectral_selection.html
http://manual.audacityteam.org/man/spectral_edit_multi_tool.html