Sweep is an audio editor and live playback tool for GNU/Linux, BSD and compatible systems. Sweep project supports many music and voice formats including AIFF, Ogg Vorbis, WAV, Speex and MP3, with multichannel editing and LADSPA effects plugins.

Here are some key features of "Sweep":

Extreme ease of use:

· Unlimited undo/redo with a fully revertible edit history
· Multithreaded background rendering and file import/export: effects processing is not disabled during playback, providing instantaneous feedback.
· Precise, interactive scrubbing
· Multichannel file support: Sweep provides complete editing and processing for multichannel sound files.
· Customisable keybindings available for all operations
· Translations for French, Hungarian, Italian, German, Russian and Polish.

Support for many PCM and voice file formats via libsndfile by Erik de Castro Lopo:

· at least 14 PCM sound file formats formats including WAV, W64, AIFF/AIFF-C, IFF/SVX, AU and raw PCM files.
· PCM audio encoding formats including 8/16/24/32 bit PCM, 32 and 64 bit floating point, u-law, A-law and ADPCM
· voice encoding formats including GSM 6.10, G721/G723 ADPCM, 12/16/24 bit DWVW

Support for Ogg Vorbis format audio files:

· an exteremely high quality, free, open and unpatented perceptual audio codec.
· supports intuitive variable bitrate encoding, where the Vorbis encoder makes low-level encoding decisions.
· provides access to average bitrate controls, including bounds on minimum and maximum bitrate usage.
· Sweep provides sensible defaults and remembers encoding options between sessions.

Support for Speex files:

· a free, open and unpatented speech codec designed for Voice over IP (VoIP) and file-based compression.
· supports optional variable bitrate and control over encoding complexity and frame packing.
· Sweep provides sensible defaults and remembers encoding options between sessions.

Support for LADSPA effects plugins, including:

· the Computer Music Toolkit by Richard Furse, containing high and low pass filters, compressors, delays, and a port of the popular Freeverb reverb unit.
· SWH plugins, over 30 effects plugins by Steve Harris, including overdrives, comb filter, ring modulator, pitch scaler, chorus, flanger and various distortions.
· more listed at ladspa.org

Powerful editing operations:

· Cut, copy and paste insert: conventional cut or copy selected regions of a sound, and paste into the same or other sounds.
· Discontinuous selections: select multiple regions of a sound and operate on these regions simultaneously
· interactive moving and merging of selection boundaries
· Selection invert, selection double/halve and selection shift left/right

Intuitive visualisation:

· Multiple views per clip
· Variable zooming to below 1:1 with mouse wheel support
· View Center, Zoom to Selection, Zoom Normal
· Easy differentiation of multiple files with 6 standard colour schemes including Decoder Red, Orangeboom, Coogee Bay Blue and Blackwattle.

Versatile playback modes:

· Standard transport features: play/pause, stop, rewind, fast forward, scan reverse/forward, go to end/beginning.
· Simultaneous playback of multiple files
· Play all, play selection, and looping playback
· Interactive reverse playback: includes reverse previews and reverse looping

Flexible recording:

· independent record and playback heads
· "tape loop" style recording
· reverse recording

Device handling and portability:

· Support for Open Sound System compatible audio devices (eg. stock Linux kernel), ALSA 0.6.0 and Solaris audio.
· Intuitive control of application latency
· Support for both little and big endian CPU architectures

Live playback "DJ" features:

· Two-handed interactive scrubbing
· Independent gain levels per file
· +/-10% pitch slider
· Piano-style sample playback

Requirements:

· libsndfile
· TDB
· libvorbis
· MAD
· Secret Rabbit Code
· Speex
· SWH Plugins

What's New in This Release:

· Fixed bounds checking of mode in speex header. relates to:
http://www.ocert.org/advisories/ocert-2008-2.html
· Fixed bug preventing device dialog being reopened when closed via the window manager.