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Codec
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Description
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PCM
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Standard Windows WAV format for
non-compressed audio files. Pulse Code Modulation (PCM) is the
standard method of digitally encoding audio. It is the basic
uncompressed data format used in file types such as Windows
.wav. |
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ADPCM
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Compressed WAV format. ADPCM
(Adaptive Differential Pulse Code Modulation) is an audio
compression scheme which compresses from 16-bit to 4-bit for a
4:1 compression ratio. |
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A-LAW
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Compressed WAV format. A-Law (or
CCITT standard G.711) is an audio compression scheme common in
telephony applications. It is a slight variation of the u-Law
compression format, and is found in European systems. This
encoding format compresses original 16-bit audio down to 8 bits
(for a 2:1 compression ratio) with a dynamic range of about
13-bits. Thus, a-law encoded waveforms have a higher s/n ratio
than 8-bit PCM, but at the price of a bit more distortion than
the original 16-bit audio. The quality is higher than you would
get with 4-bit ADPCM formats. Encoding and decoding is rather
fast and generally, widely supported. |
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U-LAW
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Compressed WAV format. u-Law (or
CCITT standard G.711) is an audio compression scheme and
international standard in telephony applications. u-Law is very
similar to A-Law, a variation of u-Law found in European
systems. This encoding format compresses original 16-bit audio
down to 8 bits (for a 2:1 compression ratio) with a dynamic
range of about 13-bits. Thus, u-Law encoded waveforms have a
higher s/n ratio than 8-bit PCM, but at the price of a bit more
distortion than the original 16-bit audio. The quality is higher
than you would get with 4-bit ADPCM formats. Encoding and
decoding is rather fast and generally, widely supported. |
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CCIT U-LAM
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DSP
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Compressed WAV format. DSP Group
True Speech (TM) format. |
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GSM
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Compressed WAV format. Good for
keeping of human speech. |
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MP3
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MPEG Layer-3 format. Very popular
format for keeping of music. |
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MP2
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Ogg Vorbis
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| |
Ogg Vorbis format. Ogg Vorbis is
an audio compression format. It is roughly comparable to other
formats used to store and play digital music, such as MP3, VQF,
AAC, and other digital audio formats. It is different from these
other formats because it is completely free, open, and
unpatented. |
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WMA
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| |
Windows Media Audio format. A
special type of advanced streaming format file for use with
audio content encoded with the Windows Media Audio codec. The
.wma extension indicates a file format and how the content is
encoded. |
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CDA
|
| |
Audio CD tracks (Read
Only) |
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AVI
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Audio stream format (Read
Only) |
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AIFF
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Apple audio file format
(Read Only) |
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AU
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Unix audio file format
(Read Only) |
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G.726
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| |
Used for computer telephony. Good
for keeping of human speech. |
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VOX
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| |
Dialogic ADPCM format. The
Dialogic ADPCM format is commonly found in telephony
applications, and has been optimized for low sample rate voice.
It will only save mono 16-bit audio, and like other ADPCM
formats, it compresses to 4-bits/sample (for a 4:1 ratio). This
format has no header, so any file format with the extension .VOX
will be assumed to be in this format. |
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RAW
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Raw format of audio files.
Doesn't contain header of an audio file. |
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MPC
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