Audacity for Windows

Audacity is a free and easy-to-use sound editor with a wide range of professional features.

Main features:

• Recording from microphone, line input, or other sources with the ability to listen to available tracks at the same time;
• Digitization of analog recordings (cassettes, gramophone records);
• Import and export of WAV, MP3, AIFF, AU, and Ogg Vorbis files;
• Basic editing operations (cut, copy, paste, and delete);
• Change and mix an unlimited number of tracks;
• Changing the pitch without changing the tempo, and vice versa;
• Removal of static noise, hum, hiss, and other permanent noise defects in a recording;
• Volume adjustment with compressor, gain effect, and or normalization;
• A variety of built-in effects (Echo, Phaser, Wahwah, U-turn, etc.). Creating your own effects in the Nyquist language;
• Mixing tracks with different quality characteristics with automatic conversion to specified characteristics in real-time;
• Detailed analysis of frequency characteristics and spectrographic mode for displaying tracks;
• Results can be saved in many formats provided by the libsndfile library.