Adobe AUDITION 3 User Manual page 251

ADOBE AUDITION 3.0 246
User Guide
SAMPLES: 1582BITSPERSAMPLE: 16
CHANNELS: 2
SAMPLERATE: 22050
NORMALIZED: FALSE
164 <tab> -1372
492 <tab> -876
Choose any of the following options:
Places a header before the data.
Include Format Header
Normalizes the data between –1.0 and 1.0.
Normalized Data
Audition Loop (.cel)
This format produces compressed Adobe Audition loop files, which are essentially .mp3 files with a .cel extension.
Each .cel file has a header that contains loop information, such as the number of beats, tempo, key, and stretch
method.
You can also save loops in uncompressed formats, such as Windows PCM.
The .cel format avoids a potential problem with .mp3 files. During encoding, a very small amount of silence is added
to the beginning, end, or both of an .mp3 file. The silence is very short—often only a few samples long. When you
work with a loop, though, it's enough to throw off the entire loop.
As it saves a .cel file, Adobe Audition calculates how much silence will be added to the .mp3 file and writes this infor-
mation into the .cel header. Then, when Adobe Audition opens a .cel file, it reads this information and automatically
removes the silence from the file so that it loops smoothly.
The options for Audition Loop format are identical to those for mp3PRO. For more information, see "mp3PRO
(.mp3)" on page 247.
Creative Sound Blaster (.voc)
This format is for Sound Blaster and Sound Blaster Pro voice files. Adobe Audition supports both the older and
newer formats. The older format supports only 8-bit audio, mono to 44.1 kHz and stereo to 22 kHz. The newer
format supports both 8- and 16-bit audio.
Files in this format can contain information for looping and silence. If a file contains loops and silence blocks, they
expand when you open the file.
Choose one of the following options:
Saves audio as an 8-bit .voc file that can be played on any Sound Blaster card.
Old Style
Saves audio to the newer format that supports both 8- and 16-bit audio.
New Style
Dialogic ADPCM (.vox)
The Dialogic ADPCM (Adaptive Differential Pulse Code Modulation) format is used in telephony applications, and
it's optimized for voice at low sample rates. It supports only mono 16-bit audio, and like other ADPCM formats, it
compresses the audio data to 4 bits/sample (4:1). This format has no header, so Adobe Audition assumes any .vox
file is in Dialogic ADPCM format.
Note: Take note of the sample rate of the audio before saving it, as you need to enter it upon reopening the file.