In the Waveform Editor, you can save audio files in a variety of common formats. The format you choose depends on how you plan to use the file. (See Audio format settings.) Keep in mind that each format stores unique information that might be discarded if you save a file in a different format.
Note:
Some features in the Windows version of Adobe Audition 3.0 are not available in CS5.5. Examples include some file formats and effects, CD burning, MIDI, the metronome, clip grouping and time stretching, and control surface support. For a complete list, see Adobe Audition 3.0 features replaced or not implemented in CS5.5.
Sample Type
Indicates the sample rate and bit depth. To adjust these options, click Change. (See Convert the sample rate of a file.)
Format Settings
Indicates data compression and storage modes; to adjust these, click Change. (See Audio format settings.)
Include Markers and Other Metadata
Includes audio markers and information from the Metadata panel in saved files. (See Working with markers and Viewing and editing XMP metadata.)
Note:
Some CD‑burning applications misinterpret non‑audio information such as markers and metadata, producing an unpleasant burst of noise at the beginning of each track.
If you want to edit or output individual channels of a stereo or surround-sound file, extract them to mono files. Adobe Audition appends the channel name to each extracted filename. For example, a stereo source file named Jazz.aif produces mono files named Jazz_L and Jazz_R.
A multitrack session file is a small, non-audio file. It merely stores information about locations of related audio files on your hard drive, the duration of each audio file within the session, the envelopes and effects applied to various tracks, and so forth. You can reopen a saved session file later to make further changes to the mix.
If you create multitrack mixes entirely in Adobe Audition, save session files in the native SESX format. If you plan to share multitrack compositions with other applications, however, see Export sessions to OMF or Final Cut Pro Interchange format.
To transfer complete mixes to other applications in your workflow, export to OMF or Final Cut Pro Interchange format. OMF was originally created for Avid Pro Tools, but now is a common multitrack exchange format for many audio mixing applications. Final Cut Pro Interchange format is based on human-readable XML files, which you can edit offline to revise text references, effect settings, and so on.
Sample Type
Click Change to access the Convert Sample Type dialog box. (See Converting sample types.)
Note:
Encapsulated OMF files are limited to 2 GB in size.
The
Warnings section indicates elements of the session that will be
excluded or changed. To copy this information to clipboard, click
the Copy Warnings button 
.
The second channel of stereo clips. (All clips and tracks become mono.)
Overlapping clips
Effects and track EQ.
Automation envelopes other than clip volume and mono-to-stereo track panning.
Output routing, sends, buses, and the Master track.
After you finish mixing a session, you can export all or part of it in a variety of common formats. (See Audio file formats.) When you export, the resulting file reflects current volume, pan, and effects settings routed to the Master track.
To quickly mix specific audio clips down to a single track, use the Multitrack > Bounce To New Track command. (See Create a single audio clip from multiple clips.)
Sample Type
Indicates the sample rate and bit depth. To adjust these options, click Change. (See Convert the sample rate of a file.)
Format Settings
Indicates data compression and storage modes; to adjust these, click Change. (See Audio format settings.)
Include Markers and Other Metadata
Includes audio markers and information from the Metadata panel in saved files. (See Working with markers and Viewing and editing XMP metadata.)
In the Waveform Editor, choose Edit > Edit Original to open the multitrack session that created a mixdown file. This command requires embedded metadata in the file. (See Embed edit-original data in exported mixdown files.)
to select
the desired range.
In most cases, you should save uncompressed audio to the AIFF or WAV formats. Save to the compressed mp3 format only when creating files for the web or portable media players.
In a Save As or Export dialog box, click Change to the right of Format Settings to access the options below.
To see the effect of settings changes, note the Estimated File Size at the bottom of the dialog box.
Sample Type (available only for 32-bit files)
Sets the audio bit depth. Higher bit depths provide more dynamic range and reduce distortion, though they increase file size and processing time. To determine the proper setting for common output types, see Understanding bit depth.
Integer settings clip audio that extends beyond the amplitude range for a given bit depth. Floating Point settings require slightly more storage space, but retain much greater dynamic range.
Choose 32-bit Floating Point if you want to repeatedly process the file and discard minimal amplitude data.
Note:
To add Author metadata to an AIFF file, use the Dublin Core: Creator field on the XMP tab of the Metadata panel. (See Viewing and editing XMP metadata.)
Byte Order (available only for 16-bit files)
Specifies the numerical sequence for bytes of data. Choose the Little-Endian method for systems with Intel processors and the Big-Endian method for systems with PowerPC processors.
Type
Choose Constant to apply a consistent bitrate or Variable to change the bitrate based on audio content.
Bitrate (for constant bitrates) or Quality (for variable)
Adjusts the tradeoff between file size and audio quality. Higher settings increase size and quality; lower settings reduce size and quality.
Avoid compressing the same audio to mp3 more than once. Opening and resaving an mp3 file causes it to be recompressed, so any artifacts from the compressing process become more pronounced.
You cannot adjust format settings for audio-only QuickTime files, which are always saved as uncompressed PCM (Pulse Code Modulation) data.
You can include Broadcast Wave metadata in Windows PCM files. (See Viewing and editing XMP metadata.)
Sample Type (available only for 32-bit files)
Sets the audio bit depth. Higher bit depths provide more dynamic range and reduce distortion, though they increase file size and processing time. To determine the proper setting for common output types, see Understanding bit depth.
Integer settings clip audio that extends beyond the amplitude range for a given bit depth. Floating Point settings require slightly more storage space, but retain much greater dynamic range.
Note:
The nonstandard 16.8 and 24.0 Floating Point options are provided for compatibility with previous versions of Adobe Audition. (16.8 was the internal format used by Audition 1.0. 24.0 was an optional setting from the same version.)
4GB Plus Support
Stores files larger than 4GB using either RF64 format, which reflects the current European Broadcasting Union standard, or the Multiple Data Chunks format supported by previous versions of Audition.
note: To ensure compatibility with a wide range of applications, choose the RF64 format for files greater than 4GB.
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