CCITT (Commité Consultatif
International de Telecommunications et Telegraphie)
A committee of the International Telecommunications Union responsible
for making technical recommendations about telephone and data communication
systems for PTTs and suppliers. Plenary sessions are held every four years
to adopt new standards.
CELP (Code-Excited Linear Prediction)
Audio encoding method for low-bit rate codecs.
An audio presentation channel used to stabilize the central component
of the frontal stereo image.
A sequence of data representing an audio signal intended to be reproduced
at one listening position.
Acronym for compressor/decompressor.
The set of user-definable parameters that characterise a coded bitstream.
Bitstreams are characterised by coding parameters. Decoders are characterised
by the bitstreams that they are capable of decoding.
Reduction in the number of bits used to represent an item of data.
Operation where the bitrate is constant from start to finish of the compressed
Cyclic Redundancy Check. CRC is used to detect any errors happened after
This unit of bandwidth represents the standard unit of bandwidth expressed
in human auditory terms, corresponding to a fixed length on the human
cochlea. It is approximately equal to 100 Hz at low frequencies and 1/3
octave at higher frequencies, above approximately 700 Hz.
© 1999-2000 Gabriel
Bouvigne for MP3'Tech - www.mp3tech.org