G.723 is an
ITU-T
The International Telecommunication Union Telecommunication Standardization Sector (ITU-T) is one of the three Sectors (branches) of the International Telecommunication Union (ITU). It is responsible for coordinating Standardization, standards fo ...
standard speech
codec
A codec is a computer hardware or software component that encodes or decodes a data stream or signal. ''Codec'' is a portmanteau of coder/decoder.
In electronic communications, an endec is a device that acts as both an encoder and a decoder o ...
using extensions of
G.721 providing voice quality covering 300 Hz to 3400 Hz using
Adaptive Differential Pulse Code Modulation (ADPCM) to 24 and 40 kbit/s for
digital circuit multiplication equipment (DCME) applications. The standard G.723 is obsolete and has been superseded by
G.726.
Note that this is a completely different codec from
G.723.1.
See also
*
List of codecs
The following is a list of compression formats and related codecs.
Audio compression formats
Non-compression
* Linear pulse-code modulation (LPCM, generally only described as PCM) is the format for uncompressed audio in media files and it is ...
* G.723
ithdrawn– Extensions of Recommendation G.721 adaptive differential pulse code modulation to 24 and 40 kbit/s for digital circuit multiplication equipment application. The content of the 1988 edition of ITU-T G.723 is now covered by ITU-T
G.726.
*
G.723.1 – Dual rate speech coder for multimedia communications transmitting at 5.3 and 6.3 kbit/s
*
G.726 – 40, 32, 24, 16 kbit/s Adaptive Differential Pulse Code Modulation (ADPCM). Corresponding ANSI-C code is available in the G.726 module of the ITU-T
G.191 Software Tools Library.
External links
ITU-T page of G.723
References
{{reflist
Audio codecs
Speech codecs
ITU-T recommendations
ITU-T G Series Recommendations