G.723

{{short description|ITU-T Recommendation}}

{{Infobox technology standard

| title = G.723

| long_name = Extensions of Recommendation G.721 adaptive differential pulse code modulation to 24 and 40 kbit/s for digital circuit multiplication equipment application

| image = Pcm.svg

| caption =

| status = Withdrawn

| year_started =

| version = (11/88)

| version_date = November 1988

| preview =

| preview_date =

| organization = ITU-T

| committee =

| base_standards = G.721

| related_standards = G.726

| abbreviation =

| domain = audio compression

| license = Freely available

| website = https://www.itu.int/rec/T-REC-G.723

}}

G.723 is an ITU-T standard speech codec 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 The standard G.723 is obsolete and has been superseded by G.726.{{Cite web|title=G.723: Extensions of Recommendation G.721 adaptive differential pulse code modulation to 24 and 40 kbit/s for digital circuit multiplication equipment application|url=https://www.itu.int/rec/T-REC-G.723/|url-status=live|archive-url=https://web.archive.org/web/20210613170908/https://www.itu.int/rec/T-REC-G.723/|archive-date=2021-06-13|access-date=2021-06-13|website=www.itu.int}}

Note that this is a completely different codec from G.723.1.

See also

  • List of codecs
  • G.723 [withdrawn] – Extensions of Recommendation G.721 adaptive differential pulse code modulation to 24 and 40 kbit/s for digital circuit multiplication equipment application.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.

References