Audacity 1.3.9 beta

Introduction:

Audacity is a free, easy-to-use and multilingual audio editor and recorder for Windows, Mac OS X, GNU/Linux and other operating systems. Audacity is used to Record live audio, Convert tapes and records into digital recordings or CDs, Edit Ogg Vorbis, MP3, WAV or AIFF sound files.
Cut, copy, splice or mix sounds together, Change the speed or pitch of a recording.

Overview:

Audacity was started in 1999 as part of a research project, and then over time was developed into a general audio editor. More recently (the mid-years) other people started helping with development. Today, Audacity is being developed by a team of volunteers under the open-source model, using Sourceforge, an online service that allows people around the world to collaborate on free software projects. Dozens of people have contributed to Audacity, and progress is continually accelerating. Audacity is distributed under the terms of the GNU General Public License (GPL). You are free to use this program for personal or commercial purposes. Audacity is now localized to many languages other than English.

Audacity 1.3.9 beta Features:

•   Recording – Audacity can record live audio through a microphone or mixer, or digitize recordings from cassette tapes, vinyl records, or minidisks. With some sound cards, it can also capture streaming audio. It Record from microphone, line input, or other sources and Dub over existing tracks to create multi-track recordings. Also it record up to 16 channels at once (requires multi-channel hardware). And its level meters can monitor volume levels before, during, and after recording.
•   Import and Export – Import sound files, edit them, and combine them with other files or new recordings. Export your recordings in several common file formats. Import and export WAV, AIFF, AU, and Ogg Vorbis files. It Import MPEG audio (including MP2 and MP3 files) with libmad and Export MP3s with the optional LAME encoder library. It Create WAV or AIFF files suitable for burning to CD.
Have the ability to Import and export all file formats supported by libsndfile.
Open raw (headerless) audio files using the “Import Raw” command.
•   Editing- Easy editing with Cut, Copy, Paste, and Delete. It uses unlimited Undo (and Redo) to go back any number of steps. Very fast editing of large files. Edit and mix an unlimited number of tracks. Use the Drawing tool to alter individual sample points. Fade the volume up or down smoothly with the Envelope tool.
•   Effects – Change the pitch without altering the tempo, or vice-versa. Remove static, hiss, hum, or other constant background noises. Alter frequencies with Equalization, FFT Filter, and Bass Boost effects. Adjust volumes with Compressor, Amplify, and Normalize effects. Other built-in effects include:
Echo, Phaser , Wahwah, Reverse, Sound Quality. Record and edit 16-bit, 24-bit, and 32-bit (floating point) samples. Record at up to 96 kHz. Sample rates and formats are converted using high-quality resampling and dithering. Mix tracks with different sample rates or formats, and Audacity will convert them automatically in real-time.
•   Plug-Ins – Add new effects with LADSPA plug-ins. Audacity includes some sample plug-ins by Steve Harris. Load VST plug-ins for Windows and Mac, with the optional VST Enabler. Write new effects with the built-in Nyquist programming language.
•   Analysis – Spectrogram mode for visualizing frequencies. “Plot Spectrum” command for detailed frequency analysis.
•   Free and Cross-Platform – Licensed under the GNU General Public License (GPL). Runs on Mac OS X, Windows, and GNU/Linux.