Audacity -

Key effects include Noise Reduction (to remove background noise), DeEsser/DeClicker (plugins for cleaning speech), compression, equalization (EQ), and normalization to even out volume levels.

Audacity is a free, open-source, digital audio workstation (DAW) application that has served as a staple tool for podcasters, musicians, and audio hobbyists for decades. Released in 1999, it is designed for ease of use, focusing on recording, editing, and producing audio without the complexity or cost of high-end professional software. Audacity

Users can edit multiple tracks simultaneously, allowing for the mixing of voice, music, and sound effects. The software supports cut, copy, paste, and delete operations, with unlimited "Undo" actions. Key effects include Noise Reduction (to remove background

Before recording, users must select input devices (e.g., microphones) and set sample rates. For best performance, it is suggested to aim for an input volume that peaks around -12 dB, avoiding the red -6 dB zone. Users can edit multiple tracks simultaneously, allowing for

Audacity includes a "Change Tempo" tool, which allows stretching or shrinking the length of an audio clip without altering its pitch, and "Change Speed" for altering both.