ACID® PRO 4.0 is the latest version of Sonic Foundry's award-winning loop-based music creation tool that allows professionals to produce original, royalty-free music.

What you can do with ACID PRO

General Features

  • Create professional, royalty-free music
  • Intuitive pick, paint, and play style interface
  • Arrange and edit audio loops
  • Hundreds of multi-genre loops
  • Use unlimited tracks of audio and MIDI
  • Record MIDI, music, or vocals directly into a project
  • Perform 5.1 surround mixing
  • Use an unlimited number of loops with automatic tempo and pitch matching
  • Preview loops in real-time along with your project before adding them
  • Import 16-bit or 24-bit audio files
  • Import MP3s, videos, and complete songs
  • Create mixes in alternate time signatures
  • Import Windows Media™ Audio and Video files
  • Open multiple file formats in the same project
  • Use ASIO driver supported sound devices

Editing Features

  • Control the volume, pan and effects on each track or through envelope changes
  • Create custom remixes of your favorite songs using the Beatmapper™
  • Use master, auxiliary, and effects bus tracks
  • Produce amazing drum fills, stutters, and DJ-style effects with the Chopper™
  • Perform Loop Cloning with the Chopper™
  • Create the ultimate music bed for video scoring
  • Synchronize audio and video files at the frame level
  • Restore projects to any previous state using unlimited undo / redo history
  • Drop markers in real-time along the timeline
  • Edit multiple tracks at once with ripple editing
  • Perform tempo and key mapping
  • Make tempo and key changes over time
  • Insert volume and pan envelopes
  • Mix several tracks into a new one (track bouncing)

Effects Processing

  • Apply over 20 real-time DirectX® audio effects
  • Create resonant sweeps, dramatic fades, and EQ changes using automation parameters and envelope control
  • Audition effects in real-time and tweak the results during playback
  • Apply effects on tracks, busses, or as assignable effects chains

CD Features

  • Rip audio tracks from CDs directly into ACID for immediate remixing
  • Burn audio projects to CD with track-at-once CD burning

MIDI

  • Perform MIDI recording, editing, and playback
  • Use unlimited tracks of MIDI
  • Use VST instruments and DLS soft synths
  • Quickly view, filter, and edit MIDI events using ACID PRO's new MIDI list editor
  • Add events to your project without having to use an external MIDI controller using step recording
  • Use the piano roll to draw and arrange MIDI notes and graphically edit MIDI parameters
  • Record MIDI tracks directly into ACID using a MIDI controller
  • Combine MIDI tracks with audio tracks
  • Generate MIDI Time Code and synchronize with external devices
  • Play MIDI files using external or internal MIDI sound sources
  • Time stretch MIDI tracks

Other Features

  • Publish your music to the online community at ACIDPlanet.com
  • Save to a number of audio file formats, including WAV, WMA, RM, and MP3
  • Encode video, insert metadata command markers, launch web sites, display captions, and embed URL flips into your audio and video streams.
  • Incorporate any DirectX® Plug-In, whether from Sonic Foundry or a third party vendor