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