AAC is the short of Advanced Audio Coding
which is an audio format co-developed by Fraunhofer IIS-A,
Dolby and AT&T. AAC format could only be supported by hard
drive-based MP3 of Apple for the time being. The algorithms
used by AAC is different from that by MP3, and AAC could
provide a better sound quality under the condition of
compressing files to 30 percents smaller than MP3.
ASF is Advanced Streaming Format. It
is an extensible file format developed primarily for storing
synchronized digital video, audio, subtitle streams, or
transmitting data on the internet. ASF is also a multimedia
container of Windows Media Video or Windows Media Audio.
To convert aac to asf: please install
aac decoder based on DirectShow on your Windows system.
Run "regsvr32 CoreAAC.ax" to register the codec.
ASF Converter which can
convert aac to asf file. Select an aac file, change
audio encoding bitrate if necessary, rename the output file to asf
CDA means CD Tracks and it is a
familiar file format in CD music discs. With its biggest
feature of approximate lossless and basically faithful to
the soundtrack, cda is the best choice for speaker
enthusiast. But the file in CD with extension of .CDA
contains only an index information but not real sound
information. So no matter how long a CD file is, the .cda
file is always 44-byte-long. And files can not be played
when CDA files are copied directly to the hard drive.
To convert cda to asf, please install
CDDA Reader filter for reading CDA file. Use WinRar
unzip the file, run "regsvr32 cddareader.ax" to register it.