Audacity
Free, open-source desktop software for recording, editing, analyzing, importing, exporting and converting audio.
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About Audacity
Audacity is free software for recording and editing audio. It is intended for activities such as producing music and podcasts or experimenting with audio.
What you can do
Records live audio using a microphone or mixer.
Edits tracks with cutting, pasting and volume-mixing tools.
Imports, exports and converts popular audio formats, including MP3, M4A, AIFF, FLAC and WAV.
Supports third-party effects plugins.
Visualizes and analyzes audio clips in Spectrogram view.