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and MP3 Decoding |
By installing the DLL containing:
- LAME encoding library,
- CDEX CD-DA audio extraction library
- MPG123 decoding library
They also enable an extra function, File|CD Ripper and MP3 Encoder... providing Cd Ripping, Ripping directly to MP3, and File encoding to MP3.
Sample Rate
The Sample Rate is defined by the source. From CD the sample rate is fixed at 44,100Hz.
Audio Files must use one of the allowable sample rates.
Allowed Sample Rate: 11025, 22050, 32000, 44100 and 48000
Mode
The Mode is again dependant upon the source.
For a Mono source only the Mono mode is available.
For a Stereo source Stereo, Joint Stereo and Dual Channel modes are available.
When batch encoding the source defines the mode, Mono files use Mono mode and Stereo files use the
selected stereo mode.
Allowed Modes: Mono, Stereo, Joint Stereo, Dual Channel
Bit Rate
Defines the bit rate for the MP3 file. Higher bit rates gives better quality, but also
bigger files. Most people prefer to generate 128 kBit stereo MP3s. Note that it is the
total bit rate that is specified, so if you're generating a stereo MP3 file at 128 kBit you
get 64 kBit for left channel and 64 kBit for the right channel.
When encoding a single file the selected bit rate is used.
When batch encoding, Stereo files will use the selected bit rate with Mono files using half
the selected data rate, this ensures a constant channel rate is maintained
Allowed Bit Rates: 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256 and 320
CRC
Adds Checksum data to each frame in the MP3 file. The checksum data is useful for error correction
when streaming the MP3 in real-time over the internet (as done by internet radio stations).
It lowers the quality of the sound slightly since the checksum data also needs to fit in
the specified bit rate and is not needed for normal use.
Private
Sets the Private flag in the MP3 file, specifying that this is a private MP3.
As far as I know there is no program that treats private MP3's differently from normal ones so it is practically useless.
Setting this flag doesn't affect the encoding time, file size or quality in any way.
Copyright
Sets the Copyright flag in the MP3 file, specifying that this is a copyrighted MP3.
As far as I know there is no program that treats copyrighted MP3's differently from normal ones so it is practically useless.
Setting this flag doesn't affect the encoding time, file size or quality in any way.
Original
Sets the Original flag in the MP3 file, specifying that this is ao original MP3.
As far as I know there is no program that treats copyrighted MP3's differently from normal ones so it is practically useless.
Setting this flag doesn't affect the encoding time, file size or quality in any way.
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GCT AudioSuite can make use of the LAME encoding library, the CDEX CD-DA audio extraction library
and the MPG123 decoding library when installed.
Use of these libraries is covered under the terms of the GNU Licences available at their
respective sites.
The latest full source code to the LAME library is available at
http://www.sulaco.org
The latest full source code to the MPG123 library is available at
http://www.mpg123.de
The latest full source code to the CDEX library is available at
http://www.cdex.n3.net |
