Recently the alarms have been lit with some news that have appeared about privacy in Audacity now that it has changed hands. You will be able to see the net full of articles in favor of this open source software and also against those who did not like the changes at all.
Well, whether you don't like Audacity for those reasons, or if you want one alternative For different ones, here is a list with some of the options that you have at your disposal for sound editing in Linux ...
Best alternatives to Audacity
Ardor
Ardor is a well-known audio software that is widely used in Linux distros by those who want to do their work with sound. It is one of the best alternatives to Audacity, as well as being free. You can record, cut, equalize, and much more with its track editing tools.
Radium
Another alternative for Audacity. A music editor with a new graphical interface to work with will be really easy. Compared to conventional sequencer interfaces, this one is faster and displays more audio details on the screen.
Frinika
Frinika is also free, under the GPL license. It is a complete music workstation. Contains sequencer, MIDI support, software synthesizer, audio recorder, piano, editing system, and more.
ECO
EKO is a very simple sound editor. Also, it supports most of the popular sound formats. It can cut, copy, paste sound and has a minimal, but functional FX processor.
sound
sound it is a virtual audio loopback. An application that allows you to digitize recordings by recording an output from some other program, such as a multimedia player. You can save in WAV format or channel to another program like an MP3 encoder.
KWave
KWave is an editor designed by KDE, although it can be installed in non-Plasma environments. It allows to record sound, play, import and edit in various formats.
GTK Gave Cleaner
This one is an alternative to Audacity, but created for GNOME (but can be installed in other environments). It's a sound editor simple that uses GTK + for its GUI widgets.
Ecasound
It is another software designed for multitrack audio processing. Although it is somewhat primitive, it is functional and can be useful for simple tasks such as playback, recording, converting between formats, adding effects, mixing, etc.