Adobe AUDITION 1.5 - Manual (Page 243)

235 ADOBE AUDITION 1.5
User Guide
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 information 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 237.
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.
Options Choose one of the following:
• Old Style saves audio as an 8-bit .voc file that can be played on any Sound Blaster card.
• New Style saves audio to the newer format that supports both 8- and 16-bit audio.
Dialogic ADPCM (.vox)
The Dialogic ADPCM format is used in telephony applications, and it’s optimized for low
sample rate voice. 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.
DiamondWare Digitized (.dwd)
This format is used by DiamondWare Sound Toolkit, a programmer's library that lets you
quickly and easily add high-quality interactive audio to games and multimedia applica-
tions. It supports both mono and stereo files at a variety of resolutions and sample rates.
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